水题，取模运算和取整除法即可解决
AC代码
#include<cstdio>
#include<iostream>
using namespace std;
//#include<string>
int main()
{
int ah, am, as, bh, bm, bs;
int h, m, s;
int n;
cin >> n;
while (n--)
{
cin >> ah >> am >> as >> bh >> bm >> bs;
s = (as + bs) % 60;
m = (am + bm + (as + bs) / 60) % 60;
h = (ah + bh + (am + bm + (as + bs) / 60) / 60);
printf("%d %d %d", h, m, s);
cout << endl;
}
return 0;
}
