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

int main()
{
    // L:100, M:25, N:1, bill//
    int L, M, N;
    int bill = 0;
    cin >> L >> M >> N;
    M += (N / 25);
    N %= 25;
    L += (M / 4);    
    M %= 4;
    L %= 10;
    cout << L + M + N << endl;

    return 0;
}