#include <iostream>
#include <string>

using namespace std;

int main(int argc, char** argv) {
    int L, M, N, Y = 0;
    
    cin >> L >> M >> N;
    
    M += (N / 25);  N %= 25;
    L += (M / 4);   M %= 4;
    L %= 10;
    
    cout << L + M + N << endl;
    
    return 0;
}