@[ZZYTCCBS](/user/458102)
```cpp
#include<bits/stdc++.h>
using namespace std;
long b;
int main() {
long long s, u, a=8 ;
cin>>s>>u;
int x=0;
while (s>0)
{
s-=u;
x++;
}
b=b-x-10;
while (b<0)
{
b+=60;
a--;
}
if (a<0)
{
a+=24;
}
if (a<10)
{
cout<<"0"<<a<<":";
}
else cout<<a<<":";
if (b<10)
{
cout<<"0"<<b;
}
else cout<<b;
return 0;
}
```
建议手动找不同
by UnyieldingTrilobite @ 2022-07-27 18:02:58