#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;

int main() {
    int c100, c25, c1;
    cin >> c100 >> c25 >> c1;
    int cnt = 0;
    cnt += c1 % 25; c25 += c1 / 25;
    cnt += c25 % 4; c100 += c25 / 4;
    cnt += c100 % 10;
    cout << cnt << endl;
    return 0;
}