@[C137_Rain](/user/748918) 改了一下，AC了
```cpp
#include<bits/stdc++.h>
using namespace std;
int s,v;
double t;
int minute,h;
double sum=480;
int main(){
cin >> s >> v;
t = ceil(s*1.0/v);
sum -= t+10;
if(t+10>480){
sum=1440-(t+10-480);
}
while(sum>=60){
sum -= 60;
h++;
}
minute = sum;
if(h<10) cout << 0;
cout << h << ":";
if(minute<10) cout << 0;
cout << minute;
return 0;
}
```
求关注~
by Polaris_flame @ 2023-08-13 11:31:07
@[Polaris_flame](/user/1046448) 谢谢，已关
by C137_Rain @ 2023-08-13 16:50:56