#include <bits/stdc++.h>
using namespace std;

int main() { 
    int L, M, N, K = 0;
    cin >> L >> M >> N;

    M += N / 25;
    N = N % 25;

    L += M / 4;
    M = M % 4;

    K += L / 10;
    L = L % 10;

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

    return 0;
}