#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); i++)
using namespace std;
typedef long long ll;

int main(){
    int l, m, n;
    cin >> l >> m >> n;
    int price = l * 100 + m * 25 + n;
    int ans = 0;
    ans += (price % 1000) / 100;
    ans += (price % 100) / 25;
    ans += price % 25;
    cout << ans << endl;
    return 0;
}