c卡在70分了求助

#include<stdio.h>
int main()
{
    int s, v;
    scanf("%d%d", &s, &v);
    int t;
    if (s % v == 0)
        t = s / v + 10;
    else
        t = s / v + 11;
    int h;
    if (t / 60 > 0)
        {
            h = t / 60;
            t -= h * 60;
        }
    else if (t / 60 == 0)
            h = 0;
    printf("%02d:%02d",7-h,60-t);
    return 0;
}