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

using namespace std;

int main()
{
    int l, m, n;
    cin >> l >> m >> n;

    m += n/25;
    n %= 25;
    l += m/4;
    m %= 4;
    l %= 10;

    cout << l+m+n << endl;

    return 0;
}