#include <iostream>

int main() {
    using namespace std;
    int L, M, N;
    cin >> L >> M >> N;
    int total = L * 100 + M * 25 + N;
    int after = total / 1000; total %= 1000;
    after += total / 100; total %= 100;
    after += total / 25; total %= 25;
    after += total;
    cout << after << endl;
    return 0;
}