当t%60小于10而大于0时，要在前面加0
by AC__king @ 2023-08-21 15:07:53
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
long long int s,n,c,h=7,m=50,a;
cin>>s>>n;
if(s%n==0)a=s/n;
else a=s/n+1;
m-=a;
while(1){
if(m<0){
h-=1;
m+=60;
}
if(h<0)h=23;
if(m>=0&&h>=0)break;
}
if(h<=9)cout<<0;
cout<<h;
cout<<":";
if(m<=9)cout<<0;
cout<<m;
}
```
AC代码
by AC__king @ 2023-08-21 15:09:29
栓Q
by maoboxiA2 @ 2024-08-04 16:51:56