```cpp
#include<iostream>
#include<cmath>
#include<cstring>
#include<bits/stdc++.h>
#include<algorithm>
using namespace std;
int main()
{
int s,u;
cin>>s>>u;
int time=(8*60+24*60)-10;
int use=ceil(s/(double)u);
time-=use;
if (time>=24*60)
{
time-=24*60;
}
printf("%02d:%02d",time/60,time%60);
return 0;
}
```
by W_Galaxy @ 2024-04-16 19:13:30
@[XiaoYanYa](/user/1241049)
```cpp
int use=ceil(s/u*1.0);
```
改成
```cpp
int use=ceil(s/double(u)*1.0);
```
---
```cpp
printf("%02d:%02d",time/60,time%60-1);
```
改成
```cpp
printf("%02d:%02d",time/60,time%60);
```
by xiangzhenze611 @ 2024-04-16 19:26:22
@[xiangzhenze611](/user/1005749) @[W_Galaxy](/user/1181026)
谢谢，此贴完
by XiaoYanYa @ 2024-04-19 15:35:22