From 39cfc3b8c0a51350a222444e9bd37f12d5822897 Mon Sep 17 00:00:00 2001
From: Ren Baoshuo <i@baoshuo.ren>
Date: Tue, 30 Nov 2021 20:59:10 +0800
Subject: [PATCH] =?UTF-8?q?796.=20=E5=AD=90=E7=9F=A9=E9=98=B5=E7=9A=84?=
 =?UTF-8?q?=E5=92=8C?=
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https://www.acwing.com/problem/content/submission/code_detail/9139040/
---
 AcWing/796/796.cpp | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 AcWing/796/796.cpp

diff --git a/AcWing/796/796.cpp b/AcWing/796/796.cpp
new file mode 100644
index 00000000..e2442bb5
--- /dev/null
+++ b/AcWing/796/796.cpp
@@ -0,0 +1,27 @@
+#include <bits/stdc++.h>
+
+using std::cin;
+using std::cout;
+using std::endl;
+
+int n, m, q, g[1005][1005], sum[1005][1005];
+
+int main() {
+    cin >> n >> m >> q;
+    for (int i = 1; i <= n; i++) {
+        for (int j = 1; j <= m; j++) {
+            cin >> g[i][j];
+        }
+    }
+    for (int i = 1; i <= n; i++) {
+        for (int j = 1; j <= m; j++) {
+            sum[i][j] = sum[i - 1][j] + sum[i][j - 1] - sum[i - 1][j - 1] + g[i][j];
+        }
+    }
+    while (q--) {
+        int x1, y1, x2, y2;
+        cin >> x1 >> y1 >> x2 >> y2;
+        cout << sum[x2][y2] - sum[x1 - 1][y2] - sum[x2][y1 - 1] + sum[x1 - 1][y1 - 1] << endl;
+    }
+    return 0;
+}