From e1ca43a513ad0fc19e9cab8c4f0522e464d07ca5 Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Thu, 19 May 2022 09:34:34 +0800
Subject: [PATCH] =?UTF-8?q?#6284.=20=E6=95=B0=E5=88=97=E5=88=86=E5=9D=97?=
 =?UTF-8?q?=E5=85=A5=E9=97=A8=208?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

https://loj.ac/s/1466227
---
 LibreOJ/6284/6284.cpp     | 94 +++++++++++++++++++++++++++++++++++++++
 LibreOJ/6284/data/a1.in   |  3 ++
 LibreOJ/6284/data/a1.out  |  3 ++
 LibreOJ/6284/data/a10.in  |  3 ++
 LibreOJ/6284/data/a10.out |  3 ++
 LibreOJ/6284/data/a2.in   |  3 ++
 LibreOJ/6284/data/a2.out  |  3 ++
 LibreOJ/6284/data/a3.in   |  3 ++
 LibreOJ/6284/data/a3.out  |  3 ++
 LibreOJ/6284/data/a4.in   |  3 ++
 LibreOJ/6284/data/a4.out  |  3 ++
 LibreOJ/6284/data/a5.in   |  3 ++
 LibreOJ/6284/data/a5.out  |  3 ++
 LibreOJ/6284/data/a6.in   |  3 ++
 LibreOJ/6284/data/a6.out  |  3 ++
 LibreOJ/6284/data/a7.in   |  3 ++
 LibreOJ/6284/data/a7.out  |  3 ++
 LibreOJ/6284/data/a8.in   |  3 ++
 LibreOJ/6284/data/a8.out  |  3 ++
 LibreOJ/6284/data/a9.in   |  3 ++
 LibreOJ/6284/data/a9.out  |  3 ++
 21 files changed, 154 insertions(+)
 create mode 100644 LibreOJ/6284/6284.cpp
 create mode 100644 LibreOJ/6284/data/a1.in
 create mode 100644 LibreOJ/6284/data/a1.out
 create mode 100644 LibreOJ/6284/data/a10.in
 create mode 100644 LibreOJ/6284/data/a10.out
 create mode 100644 LibreOJ/6284/data/a2.in
 create mode 100644 LibreOJ/6284/data/a2.out
 create mode 100644 LibreOJ/6284/data/a3.in
 create mode 100644 LibreOJ/6284/data/a3.out
 create mode 100644 LibreOJ/6284/data/a4.in
 create mode 100644 LibreOJ/6284/data/a4.out
 create mode 100644 LibreOJ/6284/data/a5.in
 create mode 100644 LibreOJ/6284/data/a5.out
 create mode 100644 LibreOJ/6284/data/a6.in
 create mode 100644 LibreOJ/6284/data/a6.out
 create mode 100644 LibreOJ/6284/data/a7.in
 create mode 100644 LibreOJ/6284/data/a7.out
 create mode 100644 LibreOJ/6284/data/a8.in
 create mode 100644 LibreOJ/6284/data/a8.out
 create mode 100644 LibreOJ/6284/data/a9.in
 create mode 100644 LibreOJ/6284/data/a9.out

diff --git a/LibreOJ/6284/6284.cpp b/LibreOJ/6284/6284.cpp
new file mode 100644
index 00000000..b085d369
--- /dev/null
+++ b/LibreOJ/6284/6284.cpp
@@ -0,0 +1,94 @@
+#include <cmath>
+#include <cstring>
+#include <iostream>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 1e5 + 5;
+
+int n, c, t, a[N], st[N], ed[N], pos[N], rep[N];
+
+inline void pushdown(int x) {
+    if (rep[x] != -1) {
+        for (int i = st[x]; i <= ed[x]; i++) a[i] = rep[x];
+        rep[x] = -1;
+    }
+}
+
+int solve(int l, int r, int c) {
+    int p = pos[l],
+        q = pos[r];
+    int res = 0;
+
+    if (p == q) {
+        pushdown(p);
+        for (int i = l; i <= r; i++) {
+            if (a[i] == c) res++;
+            a[i] = c;
+        }
+
+        return res;
+    }
+
+    pushdown(p);
+    for (int i = l; i <= ed[p]; i++) {
+        if (a[i] == c) res++;
+        a[i] = c;
+    }
+
+    pushdown(q);
+    for (int i = st[q]; i <= r; i++) {
+        if (a[i] == c) res++;
+        a[i] = c;
+    }
+
+    for (int i = p + 1; i <= q - 1; i++) {
+        if (rep[i] != -1) {
+            if (rep[i] == c) res += ed[i] - st[i] + 1;
+        } else {
+            for (int j = st[i]; j <= ed[i]; j++) {
+                if (a[j] == c) res++;
+                a[j] = c;
+            }
+        }
+        rep[i] = c;
+    }
+
+    return res;
+}
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    memset(rep, 0xff, sizeof(rep));
+
+    cin >> n;
+
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+    }
+
+    t = std::sqrt(n);
+
+    for (c = 1;; c++) {
+        st[c] = (c - 1) * t + 1;
+        ed[c] = std::min(n, c * t);
+
+        if (c * t >= n) break;
+    }
+
+    for (int i = 1; i <= c; i++) {
+        for (int j = st[i]; j <= ed[i]; j++) {
+            pos[j] = i;
+        }
+    }
+
+    for (int i = 1, l, r, c; i <= n; i++) {
+        cin >> l >> r >> c;
+        cout << solve(l, r, c) << endl;
+    }
+
+    return 0;
+}
diff --git a/LibreOJ/6284/data/a1.in b/LibreOJ/6284/data/a1.in
new file mode 100644
index 00000000..69e5187e
--- /dev/null
+++ b/LibreOJ/6284/data/a1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:50b6049d9e7f4598daa87487d00d4ce50b17892e2f50fcabe0dd1969a826194e
+size 157818
diff --git a/LibreOJ/6284/data/a1.out b/LibreOJ/6284/data/a1.out
new file mode 100644
index 00000000..4fd3885d
--- /dev/null
+++ b/LibreOJ/6284/data/a1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16c19a30543215918faa48c02216c7d7755fabf1f4762766feb5a54dfe9295a6
+size 12515
diff --git a/LibreOJ/6284/data/a10.in b/LibreOJ/6284/data/a10.in
new file mode 100644
index 00000000..8131351a
--- /dev/null
+++ b/LibreOJ/6284/data/a10.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e110af7fdfd9bceefb4e1c7a0ecace4eda4783c2fa867abc3e63b436a5b5c248
+size 3377820
diff --git a/LibreOJ/6284/data/a10.out b/LibreOJ/6284/data/a10.out
new file mode 100644
index 00000000..daec74ae
--- /dev/null
+++ b/LibreOJ/6284/data/a10.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ceec1d2daea3255818c0351228c8268a7473406f4ee26839bb027657d0736d04
+size 280797
diff --git a/LibreOJ/6284/data/a2.in b/LibreOJ/6284/data/a2.in
new file mode 100644
index 00000000..69e5187e
--- /dev/null
+++ b/LibreOJ/6284/data/a2.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:50b6049d9e7f4598daa87487d00d4ce50b17892e2f50fcabe0dd1969a826194e
+size 157818
diff --git a/LibreOJ/6284/data/a2.out b/LibreOJ/6284/data/a2.out
new file mode 100644
index 00000000..4fd3885d
--- /dev/null
+++ b/LibreOJ/6284/data/a2.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16c19a30543215918faa48c02216c7d7755fabf1f4762766feb5a54dfe9295a6
+size 12515
diff --git a/LibreOJ/6284/data/a3.in b/LibreOJ/6284/data/a3.in
new file mode 100644
index 00000000..69e5187e
--- /dev/null
+++ b/LibreOJ/6284/data/a3.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:50b6049d9e7f4598daa87487d00d4ce50b17892e2f50fcabe0dd1969a826194e
+size 157818
diff --git a/LibreOJ/6284/data/a3.out b/LibreOJ/6284/data/a3.out
new file mode 100644
index 00000000..4fd3885d
--- /dev/null
+++ b/LibreOJ/6284/data/a3.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:16c19a30543215918faa48c02216c7d7755fabf1f4762766feb5a54dfe9295a6
+size 12515
diff --git a/LibreOJ/6284/data/a4.in b/LibreOJ/6284/data/a4.in
new file mode 100644
index 00000000..aa867795
--- /dev/null
+++ b/LibreOJ/6284/data/a4.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0117ccc558449674f7f9ca7c5c449ac8a5d3fa5637ef4c8a9d3cf03386d340b6
+size 3378066
diff --git a/LibreOJ/6284/data/a4.out b/LibreOJ/6284/data/a4.out
new file mode 100644
index 00000000..d0e4a876
--- /dev/null
+++ b/LibreOJ/6284/data/a4.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5a3bb861df15ebc679538e51b45be68d1dd26d20c9b390e4718d55d093555c5c
+size 280935
diff --git a/LibreOJ/6284/data/a5.in b/LibreOJ/6284/data/a5.in
new file mode 100644
index 00000000..aa867795
--- /dev/null
+++ b/LibreOJ/6284/data/a5.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/LibreOJ/6284/data/a5.out b/LibreOJ/6284/data/a5.out
new file mode 100644
index 00000000..d0e4a876
--- /dev/null
+++ b/LibreOJ/6284/data/a5.out
@@ -0,0 +1,3 @@
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diff --git a/LibreOJ/6284/data/a6.in b/LibreOJ/6284/data/a6.in
new file mode 100644
index 00000000..1a4e6c2a
--- /dev/null
+++ b/LibreOJ/6284/data/a6.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ec4340c03c79aafdab34eb79c1bef3cc1f56451a77cb6042c8bdb0981a9c54d2
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diff --git a/LibreOJ/6284/data/a6.out b/LibreOJ/6284/data/a6.out
new file mode 100644
index 00000000..856b3a92
--- /dev/null
+++ b/LibreOJ/6284/data/a6.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/LibreOJ/6284/data/a7.in b/LibreOJ/6284/data/a7.in
new file mode 100644
index 00000000..1a4e6c2a
--- /dev/null
+++ b/LibreOJ/6284/data/a7.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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diff --git a/LibreOJ/6284/data/a7.out b/LibreOJ/6284/data/a7.out
new file mode 100644
index 00000000..856b3a92
--- /dev/null
+++ b/LibreOJ/6284/data/a7.out
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diff --git a/LibreOJ/6284/data/a8.in b/LibreOJ/6284/data/a8.in
new file mode 100644
index 00000000..96c168a8
--- /dev/null
+++ b/LibreOJ/6284/data/a8.in
@@ -0,0 +1,3 @@
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new file mode 100644
index 00000000..64b2125d
--- /dev/null
+++ b/LibreOJ/6284/data/a8.out
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diff --git a/LibreOJ/6284/data/a9.in b/LibreOJ/6284/data/a9.in
new file mode 100644
index 00000000..96c168a8
--- /dev/null
+++ b/LibreOJ/6284/data/a9.in
@@ -0,0 +1,3 @@
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new file mode 100644
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--- /dev/null
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