九十分求助,实在整不会了

#include <stdio.h>
#include <math.h>
int main() {
    int s = 100;
    int v = 99;
    int sum = 480;
    scanf("%d %d", &s, &v);
    sum = 10 + (int)floor(s * 1.0 / v) + 1;
    int hour, min = 0;
    int Hour = 0;
    int Min = 0;
    hour = sum / 60;
    min = sum % 60;
    Min = 60 - min;
    if (hour / 24 != 0)
        hour %= 24;
    if (hour == 0 || hour < 8)
        Hour = 8 - hour - 1;
    else if (hour >= 8 && hour < 24)
        Hour = 24 - (hour - 8) - 1;
    if (min == 0) {
        Hour++;
        Min = 0;
    }
    if (Hour == 24)
        Hour = 0;
    printf("%02d:%02d", Hour, Min);
    return 0;
}

谢谢谢谢