#include <stdio.h>
int main()
{
    int a,b;
    while(scanf("%d:%d", &a, &b)!=EOF)
    {
        printf("Atraso maximo: ");
        if(a<7 || (a==7 && b==0)) printf("0\n");
        else printf("%d\n", ((a+1)-8)*60 + b);
    }
    return 0;
}