???
???
???
by return @ 2017-06-02 14:01:41
1.输出没有空格
2.不用考虑c>a的情况
3.要特判d>b的情况,如果d>b,那么e--; f=f+60;
by Rolston @ 2017-06-02 22:48:58
```cpp
#include<bits/stdc++.h>
using namespace std;
int main()
{
int a,b,c,d,e,f;
cin>>a>>b>>c>>d;
e=c-a;
f=d-b;
if(f==0)
cout<<e<<" 00"<<endl;
else
if(f<0)
cout<<e-1<<" "<<f+60<<endl;
else
cout<<e<<" "<<f<<endl;
}
//我的程序还是很简单滴
```
by lixicheng @ 2017-06-26 20:03:42