#include <iostream>
#include <algorithm>
#include <string>
#include <cmath>

using namespace std;

int main()
{
    int L, M, N;
    cin >> L >> M >> N;
    
    M += L / 25;
    L %= 25;

    N += M / 4;
    M %= 4;

    N %= 10;

    cout << L + M + N << endl;
}