def money(L, M, N):
	add_M= N // 25
	remainder_N= N % 25
	
	M += add_M
	add_L= M  // 4
	remainder_M= M % 4
	
	L += add_L
	remainder_L= 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()