#include<iostream>
using namespace std;
int main()
{
    int L,M,N;
    cin>>L>>M>>N;
    int coin_num =0;
    coin_num +=L%25;
    M+=L/25;
    coin_num +=M%4;
    N+=M/4;
    coin_num +=(N%10);
    cout<<coin_num;
    return 0;
}