'commit'

LuoGu/RuMen/P1534.cpp

@@ -0,0 +1,15 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+long long n, a, b, he, jian;
+
+int main() {
+    cin >> n;
+    for (int i = 0; i < n; i++) {
+        cin >> a >> b;
+        jian = jian + a + b - 8;
+        he += jian;
+    }
+    cout << he << endl;
+    return 0;
+}