#include <iostream>

int main()
{
    int l, m, n;
    std::cin >> l >> m >> n;
    
    m += n / 25;
    n %= 25;
    
    l += m / 4;
    m %= 4;
    
    l %= 10;
    
    
    std::cout << (l + m + n) << std::endl;
    
    return 0;
}