#include <bits/stdc++.h>
using namespace std;
#define REP(i,n) for (int i = 0; i < n; ++i)
typedef long long ll;
// Welcome to my source code!

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;
}