#include <iostream>

using namespace std;

int main(){

	int L,M,N,_S;
	int money;
	
	cin >> L >> M >> N;

	money = L*100+M*25+N*1;

	_S = money/1000;
	L = (money-(_S*1000))/100;
	M = (money-(_S*1000+L*100))/25;
	N = (money-(_S*1000+L*100+M*25));

	cout << L+M+N << endl;

	return 0;
}