鱼鱼鱼刚改了一下变90分了
```
#include<bits/stdc++.h>
using namespace std;
int a,s,t,shi,f;
int main(){
cin>>a>>s;
t=a/s+10;
if(a%s)
t++;
shi=t/60;
f=t%60;
if(shi>8||(shi==8&&f>0)){
shi=24-shi+8-1;
if((shi<10)||(shi==10&&f))
cout<<0;
cout<<shi;
}
else
{
cout<<0;
cout<<8-shi-1;
}
cout<<":";
if(f>=50||f==0){
cout<<0;
}
cout<<60-f;
return 0;
}
```
by 514czh @ 2023-11-30 21:49:18
@[ywz121014](/user/1032282) 应该能AC
by Dark_Monarch @ 2023-12-03 15:08:25
@[wschxz](/user/1179543)
```
#include<bits/stdc++.h>
#include<cstdio>
#include<cmath>
using namespace std;
int main()
{
int s,v;
scanf("%d%d",&s,&v);
int t_min = ceil(1.0 * s / v) + 10; //向上取整, 分钟为单位
int time_sum = 60 * (24 + 8); //时间限制
int ans = time_sum - t_min;//从0点算，何时出发
int h = (ans / 60) % 24;
int min = ans % 60;
printf("%02d:%02d",h,min);
return 0;
}
```
by Dark_Monarch @ 2023-12-03 15:21:45
@[ywz121014](/user/1032282)
蟹蟹awa
by 514czh @ 2023-12-04 09:43:32