CSP-201812-1-小明上学

解题思路

#include <iostream>
using namespace std;
int main()
{
    int red, yellow, green, n, timeSum = 0;
    cin >> red >> yellow >> green;
    cin >> n;
    for (int i = 0; i < n; i++)
    {
        int flag, time;
        cin >> flag >> time;
        if (flag == 0)
        {
            timeSum += time;
        }
        else if (flag == 1)
        {
            timeSum += time;
        }
        else if (flag == 2)
        {
            timeSum += (time + red);
        }
        else if (flag == 3)
        {
            timeSum += 0;
        }
    }
    cout << timeSum;
    return 0;
}