import math

def money(L, M, N):
	add_M= N // 25
	remainder_N= math.floor(N % 25)
	add_L= (M + add_M) //4
	remainder_M= math.floor(M % 4)
	remainder_L= math.floor((L + add_L) % 10)
	Total_remainder= remainder_L+remainder_M+remainder_N
	return Total_remainder
	
def main():
	L= int(input())
	M= int(input())
	N= int(input())
	result= money(L, M, N)
	print(result)
	
main()