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+oid sha256:c449d7494a025c0181c362730d84f9439d36be3d9fd52d394d339f854e364600
+size 5
diff --git a/S2OJ/106/data/graph9.in b/S2OJ/106/data/graph9.in
new file mode 100644
index 00000000..6eb67062
--- /dev/null
+++ b/S2OJ/106/data/graph9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1516b31adb3ced062a03840a84ab37bdfc0a76027c6372ebcac530ab221a56ba
+size 62088
diff --git a/S2OJ/106/data/problem.conf b/S2OJ/106/data/problem.conf
new file mode 100644
index 00000000..cc7d2cf0
--- /dev/null
+++ b/S2OJ/106/data/problem.conf
@@ -0,0 +1,12 @@
+n_tests 10
+n_ex_tests 2
+n_sample_tests 0
+input_pre graph
+input_suf in
+output_pre graph
+output_suf ans
+time_limit 1
+memory_limit 256
+output_limit 64
+use_builtin_judger on
+use_builtin_checker ncmp
diff --git a/S2OJ/106/data/std b/S2OJ/106/data/std
new file mode 100644
index 00000000..3f38cecb
Binary files /dev/null and b/S2OJ/106/data/std differ
diff --git a/S2OJ/106/data/std.cpp b/S2OJ/106/data/std.cpp
new file mode 100644
index 00000000..8da43b16
--- /dev/null
+++ b/S2OJ/106/data/std.cpp
@@ -0,0 +1,84 @@
+#include <bits/stdc++.h>
+#define R register int
+#define ll long long
+#define db double
+#define FOR(i, j, k) for (R i = j; i <= k; i++)
+#define DEC(i, j, k) for (R i = j; i >= k; i--)
+#define walk(i, u) for (R i = 0; i < g[u].size(); i++)
+#define visch(i, u) for (R i = head[u]; i; i = edge[i].next)
+using namespace std;
+
+inline int read()
+{
+	int x = 0;
+	bool flag = 0;
+	int ch = getchar();
+	while ('0' > ch || ch > '9')
+	{
+		if (ch == '-')
+			flag = 1;
+		ch = getchar();
+	}
+	while ('0' <= ch && ch <= '9')
+	{
+		x = (x << 1) + (x << 3) + (ch ^ 48);
+		ch = getchar();
+	}
+	return flag ? -x : x;
+}
+
+const int maxn = 2510, maxm = 6210;
+int n, m, s, t;
+struct E
+{
+	int to, nxt, w;
+} edge[maxm << 1];
+int head[maxn], ec;
+inline void adde(int u, int v, int w)
+{
+	edge[++ec].to = v;
+	edge[ec].nxt = head[u];
+	edge[ec].w = w;
+	head[u] = ec;
+}
+
+deque<int> q;
+ll dis[maxn];
+bool vis[maxn];
+inline void spfa()
+{
+	FOR(i, 1, n) dis[i] = 0x3f3f3f3f3f3f3f3f;
+	dis[s] = 0;
+	vis[s] = 1;
+	q.push_back(s);
+	while (q.size())
+	{
+		int u = q.front();
+		q.pop_front();
+		vis[u] = 0;
+		for (int i = head[u]; i; i = edge[i].nxt)
+		{
+			int v = edge[i].to;
+			if (dis[u] + edge[i].w < dis[v])
+			{
+				dis[v] = dis[u] + edge[i].w;
+				if (!vis[v])
+					q.push_back(v);
+			}
+		}
+	}
+}
+
+int main()
+{
+	n = read(), m = read(), s = read(), t = read();
+	FOR(i, 1, m)
+	{
+		int x = read(), y = read(), z = read();
+		adde(x, y, z);
+		adde(y, x, z);
+	}
+	spfa();
+	printf("%lld", dis[t]);
+	return 0;
+}
diff --git a/S2OJ/106/data/val b/S2OJ/106/data/val
new file mode 100644
index 00000000..5c375468
Binary files /dev/null and b/S2OJ/106/data/val differ
diff --git a/S2OJ/106/data/val.cpp b/S2OJ/106/data/val.cpp
new file mode 100644
index 00000000..214fdc91
--- /dev/null
+++ b/S2OJ/106/data/val.cpp
@@ -0,0 +1,47 @@
+#include <bits/stdc++.h>
+#include "testlib.h"
+using namespace std;
+
+const int MAXN = 5005;
+const int LIM = 3e5;
+int f[MAXN];
+int n,m,s,t;
+
+inline int find(int x)
+{
+	return f[x]!=x?f[x]=find(f[x]):x;
+}
+
+inline void merge(int x,int y)
+{
+	x=find(x); y=find(y);
+	if(x^y) f[x]=y;
+}
+
+int main(int argc, char *argv[])
+{
+	registerValidation();
+
+	n=inf.readInt(1,2500); inf.readSpace();
+	m=inf.readInt(1,min(n*(n-1)/2,6200)); inf.readSpace();
+	s=inf.readInt(1,n); inf.readSpace();
+	t=inf.readInt(1,n); inf.readEoln();
+
+	for(int i=1; i<=n; ++i) f[i]=i;
+
+	for(int i=1,u,v; i<=m; ++i)
+	{
+		u=inf.readInt(1,n); inf.readSpace();
+		v=inf.readInt(1,n); inf.readSpace();
+		inf.readInt(1,LIM); inf.readEoln();
+
+		ensuref(u!=v,"Self loop found!");
+		merge(u,v);
+	}
+
+	inf.readEof();
+
+	ensuref(find(s)==find(t),"The graph is not connected!");
+
+	return 0;
+}
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new file mode 100644
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--- /dev/null
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new file mode 100644
index 00000000..310bbf1a
--- /dev/null
+++ b/S2OJ/1061/data/problem.conf
@@ -0,0 +1,12 @@
+n_tests 20
+n_ex_tests 0
+n_sample_tests 0
+input_pre data
+input_suf in
+output_pre data
+output_suf out
+time_limit 1
+memory_limit 1024
+output_limit 64
+use_builtin_judger on
+use_builtin_checker fcmp
diff --git a/S2OJ/109/data/problem.conf b/S2OJ/109/data/problem.conf
new file mode 100644
index 00000000..717d66ef
--- /dev/null
+++ b/S2OJ/109/data/problem.conf
@@ -0,0 +1,11 @@
+use_builtin_judger on
+use_builtin_checker ncmp
+n_tests 10
+n_ex_tests 0
+n_sample_tests 0
+input_pre tree
+input_suf in
+output_pre tree
+output_suf out
+time_limit 4
+memory_limit 512
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--- /dev/null
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--- /dev/null
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diff --git a/S2OJ/1094/data/chk.cpp b/S2OJ/1094/data/chk.cpp
new file mode 100644
index 00000000..d28509cd
--- /dev/null
+++ b/S2OJ/1094/data/chk.cpp
@@ -0,0 +1,53 @@
+#include <algorithm>
+#include <cstdio>
+#include <cstring>
+#include <iostream>
+#include <queue>
+#include <vector>
+#include "testlib.h"
+#define MP make_pair
+#define ll long long
+#define fi first
+#define se second
+using namespace std;
+
+template <typename T>
+inline void Mx(T& x, T y) {
+    x < y && (x = y);
+}
+
+template <typename T>
+inline void Mn(T& x, T y) {
+    x > y && (x = y);
+}
+
+const int N = 205000;
+int a[N], d[N];
+int main(int argc, char* argv[]) {
+    registerTestlibCmd(argc, argv);
+    int n = inf.readInt();
+    for (int i = 1; i <= n; ++i)
+        a[i] = inf.readInt();
+    int m = ans.readInt(1, 100000);
+    int t = ouf.readInt(1, 100000);
+    if (t > m) {
+        quitf(_wa, "your m is larger");
+        return 0;
+    }
+    if (t < m) {
+        quitf(_wa, "your m is smaller");
+        return 0;
+    }
+    for (int i = 1; i <= m; ++i) {
+        int l = ouf.readInt(1, n), r = ouf.readInt(l, n);
+        d[l]++, d[r + 1]--;
+    }
+    int nw = 0;
+    for (int i = 1; i <= n; ++i) {
+        nw += d[i], a[i] -= nw;
+        if (a[i])
+            quitf(_wa, "your ans is not correct");
+    }
+    quitf(_ok, "Correct");
+    return 0;
+}
diff --git a/S2OJ/1094/data/problem.conf b/S2OJ/1094/data/problem.conf
new file mode 100644
index 00000000..d858fb6d
--- /dev/null
+++ b/S2OJ/1094/data/problem.conf
@@ -0,0 +1,20 @@
+n_tests 20
+n_ex_tests 0
+n_sample_tests 0
+input_pre range
+input_suf in
+output_pre range
+output_suf ans
+time_limit 1
+memory_limit 512
+output_limit 64
+use_builtin_judger on
+n_subtasks 4
+subtask_end_1 4
+subtask_score_1 10
+subtask_end_2 10
+subtask_score_2 20
+subtask_end_3 13
+subtask_score_3 30
+subtask_end_4 20
+subtask_score_4 40
diff --git a/S2OJ/1094/data/range1.ans b/S2OJ/1094/data/range1.ans
new file mode 100644
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--- /dev/null
+++ b/S2OJ/1094/data/range1.ans
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+size 63
diff --git a/S2OJ/1094/data/range1.in b/S2OJ/1094/data/range1.in
new file mode 100644
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--- /dev/null
+++ b/S2OJ/1094/data/range1.in
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--- /dev/null
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new file mode 100644
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new file mode 100644
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new file mode 100644
index 00000000..f82d9fb4
--- /dev/null
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new file mode 100644
index 00000000..81d868ef
--- /dev/null
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new file mode 100644
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--- /dev/null
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new file mode 100644
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--- /dev/null
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new file mode 100644
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--- /dev/null
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new file mode 100644
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--- /dev/null
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new file mode 100644
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--- /dev/null
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diff --git a/S2OJ/1159/data/vikings87.ans b/S2OJ/1159/data/vikings87.ans
new file mode 100644
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--- /dev/null
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new file mode 100644
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new file mode 100644
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new file mode 100644
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new file mode 100644
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--- /dev/null
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new file mode 100644
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--- /dev/null
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+size 466397
diff --git a/S2OJ/1159/data/vikings9.ans b/S2OJ/1159/data/vikings9.ans
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,3 @@
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+size 4
diff --git a/S2OJ/1159/data/vikings9.in b/S2OJ/1159/data/vikings9.in
new file mode 100644
index 00000000..f708a066
--- /dev/null
+++ b/S2OJ/1159/data/vikings9.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1159/data/vikings90.ans b/S2OJ/1159/data/vikings90.ans
new file mode 100644
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--- /dev/null
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new file mode 100644
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--- /dev/null
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@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1159/data/vikings91.ans b/S2OJ/1159/data/vikings91.ans
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,3 @@
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--- /dev/null
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diff --git a/S2OJ/1159/data/vikings92.ans b/S2OJ/1159/data/vikings92.ans
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--- /dev/null
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diff --git a/S2OJ/1159/data/vikings92.in b/S2OJ/1159/data/vikings92.in
new file mode 100644
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--- /dev/null
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diff --git a/S2OJ/1159/data/vikings93.ans b/S2OJ/1159/data/vikings93.ans
new file mode 100644
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--- /dev/null
+++ b/S2OJ/1159/data/vikings93.ans
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diff --git a/S2OJ/1159/data/vikings93.in b/S2OJ/1159/data/vikings93.in
new file mode 100644
index 00000000..f7f7dc81
--- /dev/null
+++ b/S2OJ/1159/data/vikings93.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1159/data/vikings94.ans b/S2OJ/1159/data/vikings94.ans
new file mode 100644
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--- /dev/null
+++ b/S2OJ/1159/data/vikings94.ans
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diff --git a/S2OJ/1159/data/vikings94.in b/S2OJ/1159/data/vikings94.in
new file mode 100644
index 00000000..f7b2f238
--- /dev/null
+++ b/S2OJ/1159/data/vikings94.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/chk.cpp b/S2OJ/1167/data/chk.cpp
new file mode 100644
index 00000000..03498562
--- /dev/null
+++ b/S2OJ/1167/data/chk.cpp
@@ -0,0 +1,17 @@
+#include "testlib.h"
+#include <bits/stdc++.h>
+
+using ui = unsigned int;
+
+signed main(int argc, char** argv) {
+	registerTestlibCmd(argc, argv);
+
+	int n = inf.readInt();
+	for (int i = 1; i <= n; ++i) {
+		ui x = ui(ouf.readLong()), y = ui(ouf.readLong());
+		if (x != y) {
+			quitp(1.0 * (i - 1) / n, "jury's anwser is %u, but your answer is %u", x, y);
+		}
+	}
+	quitf(_ok, "Accept!");
+}
diff --git a/S2OJ/1167/data/data1.in b/S2OJ/1167/data/data1.in
new file mode 100644
index 00000000..fc1f4186
--- /dev/null
+++ b/S2OJ/1167/data/data1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 5
diff --git a/S2OJ/1167/data/data1.out b/S2OJ/1167/data/data1.out
new file mode 100644
index 00000000..fd481aab
--- /dev/null
+++ b/S2OJ/1167/data/data1.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data2.in b/S2OJ/1167/data/data2.in
new file mode 100644
index 00000000..fc1f4186
--- /dev/null
+++ b/S2OJ/1167/data/data2.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data2.out b/S2OJ/1167/data/data2.out
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--- /dev/null
+++ b/S2OJ/1167/data/data2.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data3.in b/S2OJ/1167/data/data3.in
new file mode 100644
index 00000000..fc1f4186
--- /dev/null
+++ b/S2OJ/1167/data/data3.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data3.out b/S2OJ/1167/data/data3.out
new file mode 100644
index 00000000..fd481aab
--- /dev/null
+++ b/S2OJ/1167/data/data3.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data4.in b/S2OJ/1167/data/data4.in
new file mode 100644
index 00000000..fc1f4186
--- /dev/null
+++ b/S2OJ/1167/data/data4.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data4.out b/S2OJ/1167/data/data4.out
new file mode 100644
index 00000000..fd481aab
--- /dev/null
+++ b/S2OJ/1167/data/data4.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1167/data/data5.in b/S2OJ/1167/data/data5.in
new file mode 100644
index 00000000..fc1f4186
--- /dev/null
+++ b/S2OJ/1167/data/data5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 5
diff --git a/S2OJ/1167/data/data5.out b/S2OJ/1167/data/data5.out
new file mode 100644
index 00000000..fd481aab
--- /dev/null
+++ b/S2OJ/1167/data/data5.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:01ba4719c80b6fe911b091a7c05124b64eeece964e09c058ef8f9805daca546b
+size 1
diff --git a/S2OJ/1167/data/problem.conf b/S2OJ/1167/data/problem.conf
new file mode 100644
index 00000000..b3b28533
--- /dev/null
+++ b/S2OJ/1167/data/problem.conf
@@ -0,0 +1,15 @@
+use_builtin_judger on
+n_tests 5
+n_ex_tests 0
+n_sample_tests 0
+time_limit 1
+memory_limit 256
+input_pre data
+input_suf in
+output_pre data
+output_suf out
+has_input_pre true
+has_output_pre true
+with_implementer on
+token 1145141919810efghkkk
+poster awr
diff --git a/S2OJ/1167/data/require/head.h b/S2OJ/1167/data/require/head.h
new file mode 100644
index 00000000..0c3646b1
--- /dev/null
+++ b/S2OJ/1167/data/require/head.h
@@ -0,0 +1 @@
+unsigned int solv(unsigned int, unsigned int);
\ No newline at end of file
diff --git a/S2OJ/1167/data/require/implementer.cpp b/S2OJ/1167/data/require/implementer.cpp
new file mode 100644
index 00000000..8219268c
--- /dev/null
+++ b/S2OJ/1167/data/require/implementer.cpp
@@ -0,0 +1,25 @@
+// 一般用于函数式交互 
+#include "head.h"
+#include <bits/stdc++.h>
+
+#define ui unsigned int
+
+static inline ui randnum() {
+	static ui seed = time(nullptr);
+	return seed ^= seed << 5, seed ^= seed >> 7, seed ^= seed << 13;
+}
+std::string str = "1145141919810efghkkk";
+
+signed main() {
+	int n;
+	std::cin >> n;
+	ui ps = (randnum() % str.length());
+	if (!ps) ++ps;
+	std::cout << str.substr(0, ps);
+	for (int i = 1; i <= n; ++i) {
+		ui a = randnum(), b = randnum();
+		ui ret = solv(a, b);
+		if (i == 1) std::cout << str.substr(ps) << '\n';
+		std::cout << a * b << ' ' << ret << '\n';
+	}
+}
diff --git a/S2OJ/1172/data/data1.in b/S2OJ/1172/data/data1.in
new file mode 100644
index 00000000..70d32b6e
--- /dev/null
+++ b/S2OJ/1172/data/data1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b09884b97fa3adca3b3962d2a1c1674c68e185ce32a02dcec572fd57e650f4b9
+size 218
diff --git a/S2OJ/1172/data/data1.out b/S2OJ/1172/data/data1.out
new file mode 100644
index 00000000..da7a8bd6
--- /dev/null
+++ b/S2OJ/1172/data/data1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7bbad81fb69da1b1538c828e0e6ed502783c60d789ee4cb514d110ed2dd10333
+size 16
diff --git a/S2OJ/1172/data/data10.in b/S2OJ/1172/data/data10.in
new file mode 100644
index 00000000..6b25c76b
--- /dev/null
+++ b/S2OJ/1172/data/data10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:77cd73080705b6b918b6b213a2222391dd5ef76ac24e2e3dc8db94d95dfc2e5d
+size 3352280
diff --git a/S2OJ/1172/data/data10.out b/S2OJ/1172/data/data10.out
new file mode 100644
index 00000000..49de0341
--- /dev/null
+++ b/S2OJ/1172/data/data10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:441f17ba55b545b80f7aa6f3364986c7da0b2d56207e3159e0d744d80e85752d
+size 320069
diff --git a/S2OJ/1172/data/data2.in b/S2OJ/1172/data/data2.in
new file mode 100644
index 00000000..ba5e487e
--- /dev/null
+++ b/S2OJ/1172/data/data2.in
@@ -0,0 +1,3 @@
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@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a9307b317c0ae8b955f2bfd2a9ec8d1eb384cb531ae5f7ef3cb137ca85eac31e
+size 1259
diff --git a/S2OJ/16/data/coin20.in b/S2OJ/16/data/coin20.in
new file mode 100644
index 00000000..23a3a5e9
--- /dev/null
+++ b/S2OJ/16/data/coin20.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b3d622df9a2c09280014235a36b7775da8a6483955c1c043565b00984b8663f1
+size 4814184
diff --git a/S2OJ/16/data/coin3.ans b/S2OJ/16/data/coin3.ans
new file mode 100644
index 00000000..807b2ae9
--- /dev/null
+++ b/S2OJ/16/data/coin3.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:31de630a0526294ab6dfdf3416f4807aa8f2e0df00cfdbe6c6bd9d54ee1dfee0
+size 40
diff --git a/S2OJ/16/data/coin3.in b/S2OJ/16/data/coin3.in
new file mode 100644
index 00000000..558ba199
--- /dev/null
+++ b/S2OJ/16/data/coin3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7548f58c4deef2f62af4e39b873873731ab23276dc43f8a831aa4b6916be6890
+size 340
diff --git a/S2OJ/16/data/coin4.ans b/S2OJ/16/data/coin4.ans
new file mode 100644
index 00000000..c8490c6d
--- /dev/null
+++ b/S2OJ/16/data/coin4.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9aca238a7ae85c9a7f86025b96afb73a8edd6516c9a11b8d50b7846519f4d8fc
+size 400
diff --git a/S2OJ/16/data/coin4.in b/S2OJ/16/data/coin4.in
new file mode 100644
index 00000000..7b1033e2
--- /dev/null
+++ b/S2OJ/16/data/coin4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e8c1e2837a7f272e851894e26f855c21a2a799b486c2057cac6dc8b47cff4f4f
+size 3433
diff --git a/S2OJ/16/data/coin5.ans b/S2OJ/16/data/coin5.ans
new file mode 100644
index 00000000..78579436
--- /dev/null
+++ b/S2OJ/16/data/coin5.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:750a6a065146030cb5711db1bdb44dacbfc3dcbad996dce515b688d8eb8680c8
+size 18
diff --git a/S2OJ/16/data/coin5.in b/S2OJ/16/data/coin5.in
new file mode 100644
index 00000000..4cafcc85
--- /dev/null
+++ b/S2OJ/16/data/coin5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4ef43335b10dbca442afdf438d9c782382e79146a9ec9c936ce10e78b7f311cf
+size 1456
diff --git a/S2OJ/16/data/coin6.ans b/S2OJ/16/data/coin6.ans
new file mode 100644
index 00000000..d23c7984
--- /dev/null
+++ b/S2OJ/16/data/coin6.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a169db986401d14e637a1c287d09be170432d00f2a20f78ea07ed3e363a45ee4
+size 35
diff --git a/S2OJ/16/data/coin6.in b/S2OJ/16/data/coin6.in
new file mode 100644
index 00000000..a19fd91c
--- /dev/null
+++ b/S2OJ/16/data/coin6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ebc6c565d28156ed85d191870721fea9a6537999777676ad978d38537cbc613f
+size 2852
diff --git a/S2OJ/16/data/coin7.ans b/S2OJ/16/data/coin7.ans
new file mode 100644
index 00000000..6dba473f
--- /dev/null
+++ b/S2OJ/16/data/coin7.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0edbbd5532125aaecadb16269f86a53daa3d8759c1ab1e4ba93565ca8582ccad
+size 151
diff --git a/S2OJ/16/data/coin7.in b/S2OJ/16/data/coin7.in
new file mode 100644
index 00000000..e3b5aac9
--- /dev/null
+++ b/S2OJ/16/data/coin7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7c8db0bc3f8934174a43544a0db794f1734ae454a97ebafb0fc0b5719bda3309
+size 11423
diff --git a/S2OJ/16/data/coin8.ans b/S2OJ/16/data/coin8.ans
new file mode 100644
index 00000000..618cbcc9
--- /dev/null
+++ b/S2OJ/16/data/coin8.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:4475e04b076704480812167cdc0501465308a464cd2d9e5717a7f633f48ac7cd
+size 356
diff --git a/S2OJ/16/data/coin8.in b/S2OJ/16/data/coin8.in
new file mode 100644
index 00000000..638216d5
--- /dev/null
+++ b/S2OJ/16/data/coin8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c80df287fdaf17a0d169045b552d280482cb85a3904f9d6d9ea2492ab197ad11
+size 28702
diff --git a/S2OJ/16/data/coin9.ans b/S2OJ/16/data/coin9.ans
new file mode 100644
index 00000000..2d19bd9f
--- /dev/null
+++ b/S2OJ/16/data/coin9.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6928c40cf128db92396596009d3d41564a6576a7853e41f959de290ffa64982d
+size 31
diff --git a/S2OJ/16/data/coin9.in b/S2OJ/16/data/coin9.in
new file mode 100644
index 00000000..58e3b19e
--- /dev/null
+++ b/S2OJ/16/data/coin9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5f11555d6fef339a1580b80025b88c9251a09818eec84a8df778ee590621ea6c
+size 267
diff --git a/S2OJ/16/data/ex_coin1.ans b/S2OJ/16/data/ex_coin1.ans
new file mode 100644
index 00000000..7b843709
--- /dev/null
+++ b/S2OJ/16/data/ex_coin1.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:827ac3dac766cab3e2c08ffbce15d3f75c5cacbb713db5e71f9520452a333740
+size 15
diff --git a/S2OJ/16/data/ex_coin1.in b/S2OJ/16/data/ex_coin1.in
new file mode 100644
index 00000000..b6e7eef5
--- /dev/null
+++ b/S2OJ/16/data/ex_coin1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9f05009b2f959f2e3fc96234c98ce4a1a5bec94b6b58238aa1ef56e30c7875b6
+size 96
diff --git a/S2OJ/16/data/ex_coin2.ans b/S2OJ/16/data/ex_coin2.ans
new file mode 100644
index 00000000..535849bc
--- /dev/null
+++ b/S2OJ/16/data/ex_coin2.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6496d5c4e25f5674dd7e09a51884daa2fce57e8497a6928759169ad346cf37be
+size 51
diff --git a/S2OJ/16/data/ex_coin2.in b/S2OJ/16/data/ex_coin2.in
new file mode 100644
index 00000000..90575e01
--- /dev/null
+++ b/S2OJ/16/data/ex_coin2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 205
diff --git a/S2OJ/16/data/ex_coin3.ans b/S2OJ/16/data/ex_coin3.ans
new file mode 100644
index 00000000..8330d297
--- /dev/null
+++ b/S2OJ/16/data/ex_coin3.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:446e0ad296c71241c95bf6030a1c222c5be6edc551f988382846e35e42b6bb36
+size 1264
diff --git a/S2OJ/16/data/ex_coin3.in b/S2OJ/16/data/ex_coin3.in
new file mode 100644
index 00000000..1f29ef95
--- /dev/null
+++ b/S2OJ/16/data/ex_coin3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 4814104
diff --git a/S2OJ/16/data/problem.conf b/S2OJ/16/data/problem.conf
new file mode 100644
index 00000000..6facdfe1
--- /dev/null
+++ b/S2OJ/16/data/problem.conf
@@ -0,0 +1,12 @@
+n_tests 20
+n_ex_tests 3
+n_sample_tests 3
+input_pre coin
+input_suf in
+output_pre coin
+output_suf ans
+time_limit 1
+memory_limit 512
+output_limit 64
+use_builtin_judger on
+use_builtin_checker lcmp
diff --git a/S2OJ/164/data/problem.conf b/S2OJ/164/data/problem.conf
new file mode 100644
index 00000000..7bb0b30e
--- /dev/null
+++ b/S2OJ/164/data/problem.conf
@@ -0,0 +1,12 @@
+n_tests 10
+n_ex_tests 0
+n_sample_tests 0
+input_pre tree
+input_suf in
+output_pre tree
+output_suf out
+time_limit 2
+memory_limit 256
+output_limit 64
+use_builtin_judger on
+use_builtin_checker ncmp
diff --git a/S2OJ/164/data/std.cpp b/S2OJ/164/data/std.cpp
new file mode 100644
index 00000000..a60a450c
--- /dev/null
+++ b/S2OJ/164/data/std.cpp
@@ -0,0 +1,53 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+inline int read()
+{
+	int x=0,f=1,c=getchar();
+	while(c<48) c=='-'&&(f=-1),c=getchar();
+	while(c>47) x=x*10+c-'0',c=getchar();
+	return x*f;
+}
+
+const int MAXN = 200005;
+int ls[MAXN*32],rs[MAXN*32],sum[MAXN*32];
+int rt[MAXN],val[MAXN],raw[MAXN];
+int n,m,q,tot;
+
+void insert(int &x,int y,int l,int r,int k)
+{
+	ls[x=++tot]=ls[y]; rs[x]=rs[y]; sum[x]=sum[y]+1;
+	if(l==r) return;
+	int mid=(l+r)>>1;
+	if(k<=mid) insert(ls[x],ls[y],l,mid,k);
+	if(k>mid)  insert(rs[x],rs[y],mid+1,r,k);
+}
+
+int query(int x,int y,int l,int r,int k)
+{
+	if(l==r) return l;
+	int mid=(l+r)>>1,s=sum[ls[y]]-sum[ls[x]];
+	if(k<=s) return query(ls[x],ls[y],l,mid,k);
+	return query(rs[x],rs[y],mid+1,r,k-s);
+}
+
+int main(int argc, char const *argv[])
+{
+	n=read(); q=read();
+	for(int i=1; i<=n; ++i)
+		val[i]=raw[i]=read();
+	sort(val+1,val+n+1);
+	m=unique(val+1,val+n+1)-val-1;
+	for(int i=1,k; i<=n; ++i)
+	{
+		k=lower_bound(val+1,val+m+1,raw[i])-val;
+		insert(rt[i],rt[i-1],1,m,k);
+	}
+	for(int i=1,l,r,k,x; i<=q; ++i)
+	{
+		l=read(); r=read(); k=read();
+		x=query(rt[l-1],rt[r],1,m,k);
+		printf("%d\n", val[x]);
+	}
+	return 0;
+}
diff --git a/S2OJ/164/data/tree1.in b/S2OJ/164/data/tree1.in
new file mode 100644
index 00000000..3cb9f71f
--- /dev/null
+++ b/S2OJ/164/data/tree1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d413611634d05118572207a46b58888f462500608d9a4b819ec7bc0c3c996791
+size 167
diff --git a/S2OJ/164/data/tree1.out b/S2OJ/164/data/tree1.out
new file mode 100644
index 00000000..25dc6c28
--- /dev/null
+++ b/S2OJ/164/data/tree1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d73ff3f498a7f24decf52f1839b1c7c9a4d1f2021ba0ddd667dbd0bf43374503
+size 100
diff --git a/S2OJ/164/data/tree10.in b/S2OJ/164/data/tree10.in
new file mode 100644
index 00000000..8e871d9f
--- /dev/null
+++ b/S2OJ/164/data/tree10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0e33a416928dad7446ae2d64bd2dfe60e137f5f503e0d22315dae42d00875360
+size 5794350
diff --git a/S2OJ/164/data/tree10.out b/S2OJ/164/data/tree10.out
new file mode 100644
index 00000000..f7031a9f
--- /dev/null
+++ b/S2OJ/164/data/tree10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:41a144c8bfbacad45b597fcf80c62f278cd75382b4c2476f516d7a2e3606fe7a
+size 2077649
diff --git a/S2OJ/164/data/tree2.in b/S2OJ/164/data/tree2.in
new file mode 100644
index 00000000..3fad4fbb
--- /dev/null
+++ b/S2OJ/164/data/tree2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:37a4cd1dce480691207a17f1ce5d6ca805c532c96db60aa2987da6107fbcf0f2
+size 1877
diff --git a/S2OJ/164/data/tree2.out b/S2OJ/164/data/tree2.out
new file mode 100644
index 00000000..354ec554
--- /dev/null
+++ b/S2OJ/164/data/tree2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:991b6e3ff774032169bb6ad3b32fbc4ddf56713716d1880dfca26ef9414ca265
+size 1032
diff --git a/S2OJ/164/data/tree3.in b/S2OJ/164/data/tree3.in
new file mode 100644
index 00000000..1cfee482
--- /dev/null
+++ b/S2OJ/164/data/tree3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:09c6160794fb22c845edcd96c60c86f807fe4c1370d450b73433da6aa6fb1450
+size 10581
diff --git a/S2OJ/164/data/tree3.out b/S2OJ/164/data/tree3.out
new file mode 100644
index 00000000..5c09d3cb
--- /dev/null
+++ b/S2OJ/164/data/tree3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:79b1de6fcf46e4e35aac5b61bdc18fce825930c1a06809a4e8275238d7d82f31
+size 5190
diff --git a/S2OJ/164/data/tree4.in b/S2OJ/164/data/tree4.in
new file mode 100644
index 00000000..bc6a628b
--- /dev/null
+++ b/S2OJ/164/data/tree4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e800d00f61e16bad4e55159481045f129edd391000ada069e1d6ed22b7060307
+size 21610
diff --git a/S2OJ/164/data/tree4.out b/S2OJ/164/data/tree4.out
new file mode 100644
index 00000000..d1263448
--- /dev/null
+++ b/S2OJ/164/data/tree4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d374230df91a79175a24208b05d228569a40a7f465a7420898fe41d99caa9386
+size 10429
diff --git a/S2OJ/164/data/tree5.in b/S2OJ/164/data/tree5.in
new file mode 100644
index 00000000..bf576e6c
--- /dev/null
+++ b/S2OJ/164/data/tree5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:c9f099e8184f940f0029dba3ae27a94bcff1d0c6c6917006ebb40cc52f607f2d
+size 46024
diff --git a/S2OJ/164/data/tree5.out b/S2OJ/164/data/tree5.out
new file mode 100644
index 00000000..aafb2f7b
--- /dev/null
+++ b/S2OJ/164/data/tree5.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:953c3df080b9b1716c5f96b7d92727e53d3eabc6a268e25a9e0c74a3853a3751
+size 20812
diff --git a/S2OJ/164/data/tree6.in b/S2OJ/164/data/tree6.in
new file mode 100644
index 00000000..5bbc7100
--- /dev/null
+++ b/S2OJ/164/data/tree6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:551ae1b75635fd329a080f30a48ecbe1d2e209c08d21193137926ecf2f4ad682
+size 686313
diff --git a/S2OJ/164/data/tree6.out b/S2OJ/164/data/tree6.out
new file mode 100644
index 00000000..ff872311
--- /dev/null
+++ b/S2OJ/164/data/tree6.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 103859
diff --git a/S2OJ/164/data/tree7.in b/S2OJ/164/data/tree7.in
new file mode 100644
index 00000000..cab7ea56
--- /dev/null
+++ b/S2OJ/164/data/tree7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 1898671
diff --git a/S2OJ/164/data/tree7.out b/S2OJ/164/data/tree7.out
new file mode 100644
index 00000000..b0ce1745
--- /dev/null
+++ b/S2OJ/164/data/tree7.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:eded4defcbe2098d688f38869cf70cc71f70004ab2a28fe58d1bb0a7f1558709
+size 519622
diff --git a/S2OJ/164/data/tree8.in b/S2OJ/164/data/tree8.in
new file mode 100644
index 00000000..b5e0102a
--- /dev/null
+++ b/S2OJ/164/data/tree8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:14d6a98ce035d5fb48298d628b23ee5e9b1e49982e11071e4da22da30504cc2e
+size 2759252
diff --git a/S2OJ/164/data/tree8.out b/S2OJ/164/data/tree8.out
new file mode 100644
index 00000000..641f9c30
--- /dev/null
+++ b/S2OJ/164/data/tree8.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b5e4d720721306db148b2fd5af54c767ac23d8e951db08254b6ccb8112235d30
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diff --git a/S2OJ/164/data/tree9.in b/S2OJ/164/data/tree9.in
new file mode 100644
index 00000000..5e8c9382
--- /dev/null
+++ b/S2OJ/164/data/tree9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b6315102c2a50e60c3d331ed91637a15779d7dfb541f05c1522e0eb9c66bdc4f
+size 4864877
diff --git a/S2OJ/164/data/tree9.out b/S2OJ/164/data/tree9.out
new file mode 100644
index 00000000..5af1cfe1
--- /dev/null
+++ b/S2OJ/164/data/tree9.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ff627b797af61aba3de9d3a7e948eec5b2e5bd04ef4303cb117c93754eb78365
+size 1558273
diff --git a/S2OJ/164/data/val.cpp b/S2OJ/164/data/val.cpp
new file mode 100644
index 00000000..7d8efc32
--- /dev/null
+++ b/S2OJ/164/data/val.cpp
@@ -0,0 +1,33 @@
+#include <bits/stdc++.h>
+#include "testlib.h"
+using namespace std;
+
+const int MAXN = 2e5;
+const int LIM = 1e9;
+int n,m;
+
+int main(int argc, char *argv[])
+{
+	registerValidation();
+
+	n=inf.readInt(1,MAXN); inf.readSpace();
+	m=inf.readInt(1,MAXN); inf.readEoln();
+
+	for(int i=1; i<=n; ++i)
+	{
+		inf.readInt(-LIM,LIM);
+		if(i!=n) inf.readSpace();
+	}
+
+	inf.readEoln();
+
+	for(int i=1; i<=m; ++i)
+	{
+		int l=inf.readInt(1,n); inf.readSpace();
+		int r=inf.readInt(l,n); inf.readSpace();
+		inf.readInt(1,r-l+1); inf.readEoln();
+	}
+
+	inf.readEof();
+	return 0;
+}
diff --git a/S2OJ/165/data/problem.conf b/S2OJ/165/data/problem.conf
new file mode 100644
index 00000000..b0b2cb2a
--- /dev/null
+++ b/S2OJ/165/data/problem.conf
@@ -0,0 +1,19 @@
+n_tests 10
+n_ex_tests 0
+n_sample_tests 0
+input_pre str
+input_suf in
+output_pre str
+output_suf ans
+time_limit 1
+memory_limit 512
+output_limit 64
+use_builtin_judger on
+use_builtin_checker ncmp
+n_subtasks 3
+subtask_end_1 3
+subtask_score_1 30
+subtask_end_2 7
+subtask_score_2 40
+subtask_end_3 10
+subtask_score_3 30
diff --git a/S2OJ/165/data/std b/S2OJ/165/data/std
new file mode 100644
index 00000000..3143b067
Binary files /dev/null and b/S2OJ/165/data/std differ
diff --git a/S2OJ/165/data/str1.ans b/S2OJ/165/data/str1.ans
new file mode 100644
index 00000000..32954eaf
--- /dev/null
+++ b/S2OJ/165/data/str1.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3826561dc7869bf26622433e02e2c17b96144046bbb50d272c17a7a50049ac9a
+size 4
diff --git a/S2OJ/165/data/str1.in b/S2OJ/165/data/str1.in
new file mode 100644
index 00000000..98be79e8
--- /dev/null
+++ b/S2OJ/165/data/str1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 15
diff --git a/S2OJ/165/data/str10.ans b/S2OJ/165/data/str10.ans
new file mode 100644
index 00000000..ebd9304f
--- /dev/null
+++ b/S2OJ/165/data/str10.ans
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/165/data/str10.in b/S2OJ/165/data/str10.in
new file mode 100644
index 00000000..5ed628fb
--- /dev/null
+++ b/S2OJ/165/data/str10.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/165/data/str2.ans b/S2OJ/165/data/str2.ans
new file mode 100644
index 00000000..38118f32
--- /dev/null
+++ b/S2OJ/165/data/str2.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:53c234e5e8472b6ac51c1ae1cab3fe06fad053beb8ebfd8977b010655bfdd3c3
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diff --git a/S2OJ/165/data/str2.in b/S2OJ/165/data/str2.in
new file mode 100644
index 00000000..eea09fa2
--- /dev/null
+++ b/S2OJ/165/data/str2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:064e1a1c89a0e1ffd557156e239cd514d2c8a697871734477961a95456a101f4
+size 17
diff --git a/S2OJ/165/data/str3.ans b/S2OJ/165/data/str3.ans
new file mode 100644
index 00000000..d790bd49
--- /dev/null
+++ b/S2OJ/165/data/str3.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 2
diff --git a/S2OJ/165/data/str3.in b/S2OJ/165/data/str3.in
new file mode 100644
index 00000000..d76eecef
--- /dev/null
+++ b/S2OJ/165/data/str3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 23
diff --git a/S2OJ/165/data/str4.ans b/S2OJ/165/data/str4.ans
new file mode 100644
index 00000000..d75cdd62
--- /dev/null
+++ b/S2OJ/165/data/str4.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b38fe9a9ad71e8107237b054f0cd824bdb9d0ff723523274001509f120c52e7a
+size 351
diff --git a/S2OJ/165/data/str4.in b/S2OJ/165/data/str4.in
new file mode 100644
index 00000000..b3556b06
--- /dev/null
+++ b/S2OJ/165/data/str4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/165/data/str5.ans b/S2OJ/165/data/str5.ans
new file mode 100644
index 00000000..03d4a42c
--- /dev/null
+++ b/S2OJ/165/data/str5.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3b6e357ca454d976aefdfdc307ea1e9dfabbf06b9753f35821d54ad84f7ac863
+size 24
diff --git a/S2OJ/165/data/str5.in b/S2OJ/165/data/str5.in
new file mode 100644
index 00000000..7bb74445
--- /dev/null
+++ b/S2OJ/165/data/str5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:34d2a22c978c24f0f371f6ea81b3a5c7cbb92cac3241a09275ef60a4cbb48b72
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diff --git a/S2OJ/165/data/str6.ans b/S2OJ/165/data/str6.ans
new file mode 100644
index 00000000..75eacedb
--- /dev/null
+++ b/S2OJ/165/data/str6.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:020e5a456a2a7871c52cd7639304fa348936a2fd531101c8f784af051f243148
+size 14
diff --git a/S2OJ/165/data/str6.in b/S2OJ/165/data/str6.in
new file mode 100644
index 00000000..21412135
--- /dev/null
+++ b/S2OJ/165/data/str6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/165/data/str7.ans b/S2OJ/165/data/str7.ans
new file mode 100644
index 00000000..03234123
--- /dev/null
+++ b/S2OJ/165/data/str7.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e882e8286a6c4c76bce2ecc5790fe2bc5778082e4e926059aab1b55132934e89
+size 24
diff --git a/S2OJ/165/data/str7.in b/S2OJ/165/data/str7.in
new file mode 100644
index 00000000..4f178705
--- /dev/null
+++ b/S2OJ/165/data/str7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5b7be2fc24c6d925ef3391567a0fd9ee8589670199981955335cffd84cac9ac8
+size 10702
diff --git a/S2OJ/165/data/str8.ans b/S2OJ/165/data/str8.ans
new file mode 100644
index 00000000..4201dbea
--- /dev/null
+++ b/S2OJ/165/data/str8.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:32243921029bac09211dd3605a7838df64e23bf145e0614af6011027583da9d2
+size 14
diff --git a/S2OJ/165/data/str8.in b/S2OJ/165/data/str8.in
new file mode 100644
index 00000000..925aef9e
--- /dev/null
+++ b/S2OJ/165/data/str8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:757458d6425a0bfdaa102fded66905105441476c398cdbb61d1ee734e94005c1
+size 550002
diff --git a/S2OJ/165/data/str9.ans b/S2OJ/165/data/str9.ans
new file mode 100644
index 00000000..3a03a222
--- /dev/null
+++ b/S2OJ/165/data/str9.ans
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:1b280cf3337ceb267ece3bd710463d49e4a8a12f5957559c8355bac46bc22e9c
+size 135
diff --git a/S2OJ/165/data/str9.in b/S2OJ/165/data/str9.in
new file mode 100644
index 00000000..b8531186
--- /dev/null
+++ b/S2OJ/165/data/str9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a6118f0a93cabd8b48574e9b734beec999d7ddb152e0556136217df310386403
+size 1000302
diff --git a/S2OJ/165/data/val.cpp b/S2OJ/165/data/val.cpp
new file mode 100644
index 00000000..0b979c27
--- /dev/null
+++ b/S2OJ/165/data/val.cpp
@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+#include "testlib.h"
+using namespace std;
+
+const int LIM = 1e6;
+string s,t;
+int n,m;
+
+int main(int argc, char *argv[])
+{
+	registerValidation();
+
+	s=inf.readWord(); inf.readEoln();
+	t=inf.readWord(); inf.readEoln();
+
+	inf.readEof();
+
+	n=s.length(); m=t.length();
+
+	ensuref(n<=LIM&&m<=LIM, "The string is too long!");
+	ensuref(n>=m, "The second string shouldn't be longer than the first one!");
+
+	return 0;
+}
diff --git a/S2OJ/168/data/problem.conf b/S2OJ/168/data/problem.conf
new file mode 100644
index 00000000..77533153
--- /dev/null
+++ b/S2OJ/168/data/problem.conf
@@ -0,0 +1,11 @@
+use_builtin_judger on
+use_builtin_checker wcmp
+n_tests 10
+n_ex_tests 0
+n_sample_tests 0
+input_pre sieve
+input_suf in
+output_pre sieve
+output_suf out
+time_limit 2
+memory_limit 512
diff --git a/S2OJ/168/data/sieve1.in b/S2OJ/168/data/sieve1.in
new file mode 100644
index 00000000..1796237c
--- /dev/null
+++ b/S2OJ/168/data/sieve1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:57f822a01f74b681254d479ec88435731270bec41c79b7f687a5a775fb495bad
+size 86
diff --git a/S2OJ/168/data/sieve1.out b/S2OJ/168/data/sieve1.out
new file mode 100644
index 00000000..8f87ee20
--- /dev/null
+++ b/S2OJ/168/data/sieve1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:bccafff256a704c29e762a3a5bbf4105c6cd07c6335f8e6bb3ec1e1c52ef3191
+size 121
diff --git a/S2OJ/168/data/sieve10.in b/S2OJ/168/data/sieve10.in
new file mode 100644
index 00000000..53f67420
--- /dev/null
+++ b/S2OJ/168/data/sieve10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ec404e21dfbe420c40aa8f2aed387389679e94f647c4375e13dc793a36feacb0
+size 8278806
diff --git a/S2OJ/168/data/sieve10.out b/S2OJ/168/data/sieve10.out
new file mode 100644
index 00000000..c1fa5cc5
--- /dev/null
+++ b/S2OJ/168/data/sieve10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5bc203bcfc5fa2d7370a962920b88f338116a8b8ee1682f750a4c7adc44946c3
+size 11390511
diff --git a/S2OJ/168/data/sieve2.in b/S2OJ/168/data/sieve2.in
new file mode 100644
index 00000000..185397a8
--- /dev/null
+++ b/S2OJ/168/data/sieve2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd65b389c93f2b183b657bf91933886f2036a8d46755064190fa00a2f4f71363
+size 84
diff --git a/S2OJ/168/data/sieve2.out b/S2OJ/168/data/sieve2.out
new file mode 100644
index 00000000..8f0c10e8
--- /dev/null
+++ b/S2OJ/168/data/sieve2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:de52d2b2fdad2299233207efc437bf0fda70701126c6227230545213d695b856
+size 118
diff --git a/S2OJ/168/data/sieve3.in b/S2OJ/168/data/sieve3.in
new file mode 100644
index 00000000..3735d457
--- /dev/null
+++ b/S2OJ/168/data/sieve3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:72c8389c0819c821115498bdfabf516e98ece664861bbb550eccc25be2abf1ba
+size 844
diff --git a/S2OJ/168/data/sieve3.out b/S2OJ/168/data/sieve3.out
new file mode 100644
index 00000000..0a53c039
--- /dev/null
+++ b/S2OJ/168/data/sieve3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 1236
diff --git a/S2OJ/168/data/sieve4.in b/S2OJ/168/data/sieve4.in
new file mode 100644
index 00000000..4d3eb893
--- /dev/null
+++ b/S2OJ/168/data/sieve4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/168/data/sieve4.out b/S2OJ/168/data/sieve4.out
new file mode 100644
index 00000000..844851fa
--- /dev/null
+++ b/S2OJ/168/data/sieve4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16ff3cdeaf2a9586f4209f0a4a6794531299c097d9e8813f993af4649b365ebb
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diff --git a/S2OJ/168/data/sieve5.in b/S2OJ/168/data/sieve5.in
new file mode 100644
index 00000000..eb1ecb1d
--- /dev/null
+++ b/S2OJ/168/data/sieve5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:cee4dbd98ed36fad5b9d7fa0f7682878197e722854ae19e32ad9da986a8bbd2b
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diff --git a/S2OJ/168/data/sieve5.out b/S2OJ/168/data/sieve5.out
new file mode 100644
index 00000000..b0667b74
--- /dev/null
+++ b/S2OJ/168/data/sieve5.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 113989
diff --git a/S2OJ/168/data/sieve6.in b/S2OJ/168/data/sieve6.in
new file mode 100644
index 00000000..4a48f8e8
--- /dev/null
+++ b/S2OJ/168/data/sieve6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 827992
diff --git a/S2OJ/168/data/sieve6.out b/S2OJ/168/data/sieve6.out
new file mode 100644
index 00000000..135d3a93
--- /dev/null
+++ b/S2OJ/168/data/sieve6.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fd6296cfcb0a2f47ca317bf2e32c043266180dcf75e453246150b32bd09a04ea
+size 1139338
diff --git a/S2OJ/168/data/sieve7.in b/S2OJ/168/data/sieve7.in
new file mode 100644
index 00000000..e471d307
--- /dev/null
+++ b/S2OJ/168/data/sieve7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 4140308
diff --git a/S2OJ/168/data/sieve7.out b/S2OJ/168/data/sieve7.out
new file mode 100644
index 00000000..442a99a6
--- /dev/null
+++ b/S2OJ/168/data/sieve7.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d3592a6497900b75bff76aacd50cd84957ef0a8e1ff4544d3f1189bd3633e9b5
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diff --git a/S2OJ/168/data/sieve8.in b/S2OJ/168/data/sieve8.in
new file mode 100644
index 00000000..f2d06357
--- /dev/null
+++ b/S2OJ/168/data/sieve8.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:b20e97c6ef6a116e53e861c987729126d1f397a53b910464dd0aacf84970acf5
+size 8280062
diff --git a/S2OJ/168/data/sieve8.out b/S2OJ/168/data/sieve8.out
new file mode 100644
index 00000000..6d688b1c
--- /dev/null
+++ b/S2OJ/168/data/sieve8.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 11401491
diff --git a/S2OJ/168/data/sieve9.in b/S2OJ/168/data/sieve9.in
new file mode 100644
index 00000000..4a168b30
--- /dev/null
+++ b/S2OJ/168/data/sieve9.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/168/data/sieve9.out b/S2OJ/168/data/sieve9.out
new file mode 100644
index 00000000..de22168a
--- /dev/null
+++ b/S2OJ/168/data/sieve9.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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new file mode 100644
index 00000000..73100020
--- /dev/null
+++ b/S2OJ/17/data/ex_str1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/17/data/ex_str1.out b/S2OJ/17/data/ex_str1.out
new file mode 100644
index 00000000..b98c2a60
--- /dev/null
+++ b/S2OJ/17/data/ex_str1.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/17/data/ex_str2.in b/S2OJ/17/data/ex_str2.in
new file mode 100644
index 00000000..00b9c405
--- /dev/null
+++ b/S2OJ/17/data/ex_str2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/S2OJ/17/data/ex_str2.out b/S2OJ/17/data/ex_str2.out
new file mode 100644
index 00000000..612fcddb
--- /dev/null
+++ b/S2OJ/17/data/ex_str2.out
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/17/data/problem.conf b/S2OJ/17/data/problem.conf
new file mode 100644
index 00000000..99d8f87b
--- /dev/null
+++ b/S2OJ/17/data/problem.conf
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