CSP-202012-1-期末预测之安全指数

• 题目很简单，直接上代码

#include <iostream>
using namespace std;
int main() {
    int n, sum = 0;
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        int w, score;
        cin >> w >> score;
        sum += w * score;
    }

    if (sum > 0) cout << sum;
    else cout << "0";
    return 0;
}