import math

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