再仔细审一下题，yyy他会不会在昨天就已经出发准备去学校了呢
by xiangzirui @ 2023-07-24 22:04:19
# 这道题其实不算特别难~~虽然我最早没有看见yyy可以提前一天出发~~，本蒟蒻这就附上代码
```c++
#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
double s,u;
cin>>s>>u;
int dian=32*60-10;
s/=u;
if(s-int(s)>0)
{
s=int(s)+1;
}
dian-=s;
int fen=dian%60;
dian/=60;
if(dian>=24)
{
dian-=24;
}
printf("%02d",dian);
cout<<":";
printf("%02d\n",fen);
return 0;
}
``````
by _KUK_ @ 2023-09-06 21:39:15