#include <iostream>
using namespace std;

int main()
{
    int a, b;
    cin >> a >> b;
    int promeni = 0;
    for(int i = 0; i < 10; i++){
        b += 1;
        if(b == 60) {
            promeni += 2;
            b = 0;
            if(a == 23) {
                a = 0;
                promeni += 2;
            }
            else if(a == 9) {
                promeni += 2;
                a += 1;
            }
            else if(a == 19){
                promeni += 2;
                a += 1;
            }
            else {
                promeni += 1;
                a += 1;
            }
        }
        else if((b - 1) % 10 == 9) {
            promeni += 2;
        }
        else {
            promeni += 1;
        }

    }
    cout << promeni << endl;
    return 0;
}
// 19 --> 20