```
注：时间可能有前导零，也有可能没有。
```
因此不能单纯以样例中的输入格式处理。
by Ameko @ 2023-08-31 17:17:32
@[li_zhi_a_wei](/user/1047089)
太长了
```
#include <iostream>
using namespace std;
int main(){
long long a, b, c, d, e, f, g;
char m;
cin >> a >> m >> b >> m >> c >> d >> m >> e >> m >> f >> g;
cout << ((d*3600+e*60+f)-(a*3600+b*60+c))*g;
return 0;
}
```
by wsbSB @ 2023-08-31 17:23:16
没必要这么复杂
by Qiu_Yuhan @ 2023-08-31 17:26:17
```cpp
#include<iostream>
using namespace std;
int main()
{
long long s1,f1,m1,s2,f2,m2,c1,c2,a,n;
char c;
cin>>s1>>c>>f1>>c>>m1;
cin>>s2>>c>>f2>>c>>m2;
f1*=60;
s1*=3600;
f2*=60;
s2*=3600;
c1=s1+f1+m1;
c2=s2+f2+m2;
a=c2-c1;
cin>>n;
cout<<n*a;
return 0;
}
```
by junjie_zhao @ 2023-08-31 17:35:54
可以像2楼一样，直接乘，没必要这么复杂
@[li_zhi_a_wei](/user/1047089)
by wrup_AC_28 @ 2023-12-13 22:19:45