#include <iostream>

using namespace std;

const int COINNUM = 3;
const int p[COINNUM] = {100, 25, 1};

int main(int argc, char const* argv[]) {
    int total = 0, res = 0;

    for (int i = 0; i < COINNUM; i++) {
        int coin; cin >> coin;
        total += p[i] * coin;
    }
    total %= 1000;
    for (int i = 0; i < COINNUM; i++) {
        res   += total / p[i];
        total %= p[i];
    }

    cout << res << endl;
}