#include <iostream>
using namespace std;

int main() {
    int L, M, N;
    cin >> L;
    cin >> M;
    cin >> N;

    int amount = 100 * L + 25 * M + 1 * N;
    amount %= 1000;
    int res = amount / 100 + (amount % 100) / 25 + (amount % 100) % 25;
    cout << res << endl;
}