L = int(input())
M = int(input())
N = int(input())

L_count = 0
M_count = 0
N_count = 0

money_sum = L*100+M*25+N*1

while money_sum >=1000:
    money_sum -= 1000
while money_sum >=100:
    money_sum -= 100
    L_count += 1
while money_sum >=25:
    money_sum -= 25
    M_count += 1
while money_sum >=1:
    money_sum -= 1
    N_count += 1

coin_count = L_count+M_count+N_count
print(coin_count)