#include <iostream>
#include <vector>
#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;
}