if __name__ == "__main__":
	list = [int(input()) for _ in range(3)]
	
	L = list[0]
	M = list[1]
	N = list[2]
	
	M += N // 25
	N %= 25
	
	L += M // 4
	M %= 4
	
	L %= 10
	
	print(L+M+N)