#include <iostream>
using namespace std;

int L, M, N;

void Solve() {
    int sum = L * 100 + M * 25 + 1 * N, answer = 0;
    sum %= 1000;    // 1000円札を使えるだけ使う
    answer += sum / 100;
    sum %= 100;     // 100円玉を 〃
    answer += sum / 25;
    sum %= 25;      // 25円玉を 〃
    answer += sum / 1;

    cout << answer << endl;
}

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

    Solve();
    return 0;
}