#include <iostream>
using namespace std;
int main(void){
    // Your code here!
    int l,m,n;
    cin >> l >> m >> n;
    l = l * 100;
    m = m * 25;
    int sum = l + m + n;
    sum = sum % 1000;
    
    int count = 0;
    count += sum / 100;
    sum = sum % 100;
    count += sum / 25;
    sum = sum % 25;
    count += sum;
    cout << count;
    
}