751. 数组的左方区域

https://www.acwing.com/problem/content/submission/code_detail/6943206/

AcWing/751/751.cpp

@@ -0,0 +1,23 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int main() {
+    char op;
+    cin >> op;
+
+    double x, sum = 0;
+    for (int i = 0; i < 12; i++) {
+        for (int j = 0; j < 12; j++) {
+            cin >> x;
+            if (i > j && i + j < 11) sum += x;
+        }
+    }
+
+    if (op == 'S')
+        printf("%.1lf", sum);
+    else
+        printf("%.1lf", sum / 30);
+
+    return 0;
+}