@[XZY3471673281](/user/1042031) 考虑一下现在8点但是过去要9个小时所以输出23:00这种情况
by Iwara @ 2023-07-19 06:48:56
```cpp
#include<iostream>
using namespace std;
int main(){
int s,v,a,b=8,c=0;
cin>>s>>v;
if(s%v!=0) a=s/v+1+10;
else a=s/v+10;
if(a>24*60) return 0;
if(a%60==0){
if(b-(a/60)>=0)cout<<c<<b-(a/60)<<":"<<c<<c;
else cout<<c<<b-(a/60)+24<<":"<<c<<c;
}
else{
b=b-1-(a/60);
if(b<0)cout<<b+24;
else cout<<"0"<<b;
c=c+60-(a%60);
if(c>=10) cout<<":"<<c;
else cout<<":"<<"0"<<c;
}
return 0;
}
```
加个特判
by Iwara @ 2023-07-19 06:49:29
@[Iwara](/user/252549) 您好，题目说不可以提前1天，是不可以0.00前出发吗？还是提前24h？
by XZY1020932680 @ 2023-07-19 14:47:24
@[XZY3471673281](/user/1042031) 提前24h(
by Iwara @ 2023-07-19 14:47:59
@[XZY3471673281](/user/1042031) 语文问题
by Iwara @ 2023-07-19 14:48:10
@[Iwara](/user/252549) thank you,已经理解了！
by XZY1020932680 @ 2023-07-19 14:48:50