@[cyzyyds122](/user/1045037) h有可能>10
```
#include <bits/stdc++.h>
using namespace std;
int main(){
int s,v;
int h=7;
cin >> s >> v;
int ti = (s/v);
if(s%v!=0){
ti++;
}
int k = 60 - ti - 10;
while(k<0){
k+=60;
h--;
}
if(h<0){
h+=24;
}
if(h<10){
cout << 0;
}
cout << h << ":";
if(k<10){
cout << 0 << k;
}else{
cout << k;
}
return 0;
}
```
by Tsuki091117 @ 2024-02-21 20:40:02