#include <stdio.h>
int main(){
    int t;
    scanf("%d",&t);
    while(t-->0){
        int h1,m1,h2,m2,k;
        scanf("%d%d%d%d%d",&h1,&m1,&h2,&m2,&k);
        int x=h1+k;
        printf("%d\n",(x*60+m1)-(h2*60+m2));
    }
}