#include <iostream>

using namespace std;

int main() {
    int l, m, n;
    
    cin >> l >> m >> n;
    
    int total = l * 100 + m * 25 + n;
    
    int a = total % 1000;
    int b = a / 100;
    int c = a % 100;
    int d = c / 25;
    int e = c % 25;
    
    cout << b + d + e << endl;
    
    return 0;
}