new file: P16247.cpp

P16247.cpp

@@ -0,0 +1,18 @@
+#include <bits/stdc++.h>
+using namespace std;
+long long a[15][15];
+int main() {
+    long long ans = 0;
+    for (int i = 1; i <= 13; i++) {
+        for (int j = 1; j <= 13; ++j) {
+            a[i][j] = i * j * (i + j);
+            if (i == j)
+                a[i][j] *= 2;
+            if (i == 1 || j == 1 || i == 13 || j == 13)
+                a[i][j] /= 2;
+            ans += a[i][j];
+        }
+    }
+    cout << ans + 100;
+    return 0;
+}