#include <iostream>
using namespace std;
int main() {
    int l, m, n;
    cin >> l >> m >> n;
    int sum = 100 * l + 25 * m + n;
    int cnt = 0;
    sum %= 1000;
    cnt += sum / 100;
    sum %= 100;
    cnt += sum / 25;
    sum %= 25;
    cout << cnt + sum << endl;
    return 0;
}