#include<iostream>

using namespace std;

int main(){
    int n = 0;
    for(int m = 1; m <= 12; m++){
        for(int fd = 0; fd <= 3; fd++){
            for(int ld = 0; ld <= 9; ld++){
                if(fd >= 3 && fd > 0){
                    fd = 4;
                    ld = 10;
                    continue;
                }
                if(fd + ld == m){
                    n++;
                }
            }
        }
    }

    cout << n << endl;

    return 0;
}