'commit'

LuoGu/RuMen/P1424.cpp

@@ -0,0 +1,16 @@
+#include <iostream>
+
+using namespace std;
+
+int main() {
+    int a, b, i, sum = 0;
+    cin >> a >> b;
+    for (i = a; i <= a + b - 1; ++i) {
+        if (i % 7 == 6 || i % 7 == 0) {
+            continue;
+        }
+        sum += 250;
+    }
+    cout << sum << endl;
+    return 0;
+}