#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"

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

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

    cout << l % 10 + m + n << endl;
    return 0;
}