改了一下，现在#3过了
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
int ti=10,s,v;
cin>>s>>v;
ti+=s/v;
if(s%v!=0)
ti+=1;
//ti+=1;
if(ti<=60)
{
cout<<"07"<<":";
if(ti==60)
cout<<"00"<<endl;
else if(60-ti<10)
cout<<"0"<<60-ti<<endl;
else
cout<<60-ti<<endl;
}
else
{
int h;
h=ti/60;
ti%=60;
if(h<=7)
{
cout<<"0"<<7-h<<":";
if(ti==0)
cout<<"00"<<endl;
else if(60-ti<10)
cout<<"0"<<60-ti<<endl;
else
cout<<60-ti<<endl;
}
}
return 0;
}
```
by yuanzongzi799 @ 2024-05-04 22:50:32