#include <iostream>
int main() {
	int L,M,N;
	std::cin >> L >> M >> N;
	while(N >= 100){
	    M++;
	    N-=100;
	}
	while(M >= 4){
	    L++;
	    M-=4;
	}
	while(L >= 10){
	    L-=10;
	}
	int count = L+M+N;
	std::cout << count << std::endl;
	return 0;
}