From 9a5892035df67536206a7d2994623156c6d4bea8 Mon Sep 17 00:00:00 2001
From: Baoshuo <i@baoshuo.ren>
Date: Tue, 14 Feb 2023 16:29:05 +0800
Subject: [PATCH] #1847. [COCI2017-2018#7] Go

https://sjzezoj.com/submission/69942
---
 S2OJ/1847/1847.cpp          | 84 +++++++++++++++++++++++++++++++++++++
 S2OJ/1847/data/ex_go1.in    |  3 ++
 S2OJ/1847/data/ex_go1.out   |  3 ++
 S2OJ/1847/data/ex_go2.in    |  3 ++
 S2OJ/1847/data/ex_go2.out   |  3 ++
 S2OJ/1847/data/go1.in       |  3 ++
 S2OJ/1847/data/go1.out      |  3 ++
 S2OJ/1847/data/go10.in      |  3 ++
 S2OJ/1847/data/go10.out     |  3 ++
 S2OJ/1847/data/go2.in       |  3 ++
 S2OJ/1847/data/go2.out      |  3 ++
 S2OJ/1847/data/go3.in       |  3 ++
 S2OJ/1847/data/go3.out      |  3 ++
 S2OJ/1847/data/go4.in       |  3 ++
 S2OJ/1847/data/go4.out      |  3 ++
 S2OJ/1847/data/go5.in       |  3 ++
 S2OJ/1847/data/go5.out      |  3 ++
 S2OJ/1847/data/go6.in       |  3 ++
 S2OJ/1847/data/go6.out      |  3 ++
 S2OJ/1847/data/go7.in       |  3 ++
 S2OJ/1847/data/go7.out      |  3 ++
 S2OJ/1847/data/go8.in       |  3 ++
 S2OJ/1847/data/go8.out      |  3 ++
 S2OJ/1847/data/go9.in       |  3 ++
 S2OJ/1847/data/go9.out      |  3 ++
 S2OJ/1847/data/problem.conf |  3 ++
 26 files changed, 159 insertions(+)
 create mode 100644 S2OJ/1847/1847.cpp
 create mode 100644 S2OJ/1847/data/ex_go1.in
 create mode 100644 S2OJ/1847/data/ex_go1.out
 create mode 100644 S2OJ/1847/data/ex_go2.in
 create mode 100644 S2OJ/1847/data/ex_go2.out
 create mode 100644 S2OJ/1847/data/go1.in
 create mode 100644 S2OJ/1847/data/go1.out
 create mode 100644 S2OJ/1847/data/go10.in
 create mode 100644 S2OJ/1847/data/go10.out
 create mode 100644 S2OJ/1847/data/go2.in
 create mode 100644 S2OJ/1847/data/go2.out
 create mode 100644 S2OJ/1847/data/go3.in
 create mode 100644 S2OJ/1847/data/go3.out
 create mode 100644 S2OJ/1847/data/go4.in
 create mode 100644 S2OJ/1847/data/go4.out
 create mode 100644 S2OJ/1847/data/go5.in
 create mode 100644 S2OJ/1847/data/go5.out
 create mode 100644 S2OJ/1847/data/go6.in
 create mode 100644 S2OJ/1847/data/go6.out
 create mode 100644 S2OJ/1847/data/go7.in
 create mode 100644 S2OJ/1847/data/go7.out
 create mode 100644 S2OJ/1847/data/go8.in
 create mode 100644 S2OJ/1847/data/go8.out
 create mode 100644 S2OJ/1847/data/go9.in
 create mode 100644 S2OJ/1847/data/go9.out
 create mode 100644 S2OJ/1847/data/problem.conf

diff --git a/S2OJ/1847/1847.cpp b/S2OJ/1847/1847.cpp
new file mode 100644
index 00000000..b9a03689
--- /dev/null
+++ b/S2OJ/1847/1847.cpp
@@ -0,0 +1,84 @@
+#include <iostream>
+#include <algorithm>
+#include <cmath>
+#include <cstring>
+#include <iterator>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 2005,
+          M = 105;
+
+int n, k, m, a[M], b[M], t[M], max, ans;
+// 访问过最左端的房子为 l
+//      最右端的房子为 r
+// 时间已经过了 k 秒
+// 目前正在 左(0) / 右(1) 端
+int f[M][M][N][2];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    memset(f, 0xc0, sizeof(f));
+
+    cin >> n >> k >> m;
+
+    for (int i = 1; i <= m; i++) {
+        cin >> a[i] >> b[i] >> t[i];
+
+        max = std::max(max, t[i]);
+    }
+
+    int x = std::distance(a, std::lower_bound(a + 1, a + 1 + m, k)),
+        y = std::distance(a, std::upper_bound(a + 1, a + 1 + m, k)) - 1;
+
+    if (a[x] == k) {
+        f[x][x][0][0]
+            = f[x][x][0][1]
+            = (std::abs(a[x] - k) < t[x]) * b[x];
+    } else {  // 起始点没有宝可梦
+        f[x][x][std::abs(a[x] - k)][0]
+            = f[x][x][std::abs(a[x] - k)][1]
+            = (std::abs(a[x] - k) < t[x]) * b[x];
+        f[y][y][std::abs(a[y] - k)][0]
+            = f[y][y][std::abs(a[y] - k)][1]
+            = (std::abs(a[y] - k) < t[y]) * b[y];
+    }
+
+    for (int len = 2; len <= m; len++) {
+        for (int l = 1, r = l + len - 1; r <= m; l++, r++) {
+            for (int k = a[r] - a[l]; k <= max; k++) {
+                f[l][r][k][0] = std::max({
+                    f[l][r][k][0],
+                    f[l + 1][r][k - (a[l + 1] - a[l])][0] + (k < t[l]) * b[l],
+                    f[l + 1][r][k - (a[r] - a[l])][1] + (k < t[l]) * b[l],
+                });
+
+                f[l][r][k][1] = std::max({
+                    f[l][r][k][1],
+                    f[l][r - 1][k - (a[r] - a[r - 1])][1] + (k < t[r]) * b[r],
+                    f[l][r - 1][k - (a[r] - a[l])][0] + (k < t[r]) * b[r],
+                });
+            }
+        }
+    }
+
+    for (int l = 1; l <= m; l++) {
+        for (int r = l; r <= m; r++) {
+            for (int k = 0; k <= max; k++) {
+                ans = std::max({
+                    ans,
+                    f[l][r][k][0],
+                    f[l][r][k][1],
+                });
+            }
+        }
+    }
+
+    cout << ans << endl;
+
+    return 0;
+}
diff --git a/S2OJ/1847/data/ex_go1.in b/S2OJ/1847/data/ex_go1.in
new file mode 100644
index 00000000..f6cd1b7c
--- /dev/null
+++ b/S2OJ/1847/data/ex_go1.in
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:40cdd23359b100cb11d5e4918dec7d4d4114e1a39edc0e77cddcea70ae5e9575
+size 37
diff --git a/S2OJ/1847/data/ex_go1.out b/S2OJ/1847/data/ex_go1.out
new file mode 100644
index 00000000..93f810ce
--- /dev/null
+++ b/S2OJ/1847/data/ex_go1.out
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e623772cc677b6536e0545bc9870ad53a37b5cf0187fcc9851641b52344c7ee8
+size 4
diff --git a/S2OJ/1847/data/ex_go2.in b/S2OJ/1847/data/ex_go2.in
new file mode 100644
index 00000000..67a3e99c
--- /dev/null
+++ b/S2OJ/1847/data/ex_go2.in
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+size 60
diff --git a/S2OJ/1847/data/ex_go2.out b/S2OJ/1847/data/ex_go2.out
new file mode 100644
index 00000000..0b5bd735
--- /dev/null
+++ b/S2OJ/1847/data/ex_go2.out
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+oid sha256:cc1bdefa1677283e90c64275f66ccd52fe41900b9c53763e2e1058dc971c01b6
+size 4
diff --git a/S2OJ/1847/data/go1.in b/S2OJ/1847/data/go1.in
new file mode 100644
index 00000000..1a73eb34
--- /dev/null
+++ b/S2OJ/1847/data/go1.in
@@ -0,0 +1,3 @@
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diff --git a/S2OJ/1847/data/go1.out b/S2OJ/1847/data/go1.out
new file mode 100644
index 00000000..a67094e6
--- /dev/null
+++ b/S2OJ/1847/data/go1.out
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diff --git a/S2OJ/1847/data/go10.in b/S2OJ/1847/data/go10.in
new file mode 100644
index 00000000..955761c5
--- /dev/null
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diff --git a/S2OJ/1847/data/go10.out b/S2OJ/1847/data/go10.out
new file mode 100644
index 00000000..0d863317
--- /dev/null
+++ b/S2OJ/1847/data/go10.out
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diff --git a/S2OJ/1847/data/go2.in b/S2OJ/1847/data/go2.in
new file mode 100644
index 00000000..699b5b36
--- /dev/null
+++ b/S2OJ/1847/data/go2.in
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new file mode 100644
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new file mode 100644
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