#include <iostream>
#include <string>
#include <cstring>
#include <vector>
#include <cmath>
#include <set>
using namespace std;

int main() {
    ios_base::sync_with_stdio(false);
    
    int tests; cin >> tests;
    
    int h1, m1, h2, m2, k;
    while(cin >> h1 >> m1 >> h2 >> m2 >> k) {
        int x1 = h1*60+m1;
        int x2 = h2*60+m2;
        
        cout << (x1+k*60-x2) << endl;
    }
}