#include <bits/stdc++.h>
#define rep(i, n) for(long long i = 0; i < n; i++)
#define ALL(v) (v).begin(), (v).end()
using namespace std;

using lint = long long;

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;
}