这题忒简单了！，你当7：50到校，再写：
```cpp
int u = s / v + (s / v * v < v ? 1 : 0) + 10;
int h = u / 60 + (u % 60 != 0 ? 1 : 0);
int m = 60 - u % 60;
if(m == 60)
m = 0;
printf("0%d:%d",h,m);
```
就行啦
by Jason_Teng @ 2024-08-26 08:19:46
还有，新手蒟蒻应用标配`cout`
by Jason_Teng @ 2024-08-26 08:20:55
@[a3481171079](/user/1427080)
by Jason_Teng @ 2024-08-26 08:21:35
~~其实我也用`cout`~~
by Jason_Teng @ 2024-08-26 08:22:21
[条件表达式详解](https://www.luogu.com.cn/article/eb0462dp)
by Jason_Teng @ 2024-08-26 08:30:43
@[shabiJason](/user/890662) 大佬，我还没学cout
by jilok @ 2024-08-26 17:29:09
@[shabiJason](/user/890662) 感谢感谢
by jilok @ 2024-08-26 17:29:29
壶关？ @[a3481171079](/user/1427080)
by Jason_Teng @ 2024-08-26 20:23:16
@[a3481171079](/user/1427080) ，cout详解明天好
by Jason_Teng @ 2024-08-26 20:24:51
@[shabiJason](/user/890662) 好的
by jilok @ 2024-08-28 01:19:11