coin100 = int(raw_input())
coin25 = int(raw_input())
coin1 = int(raw_input())
paper1000 = 0

# L = 100 yen
# M = 25 yen
# N = 1 yen

while coin1 >= 25 or coin25 >= 4 or coin100 >= 10:
    if coin1 > 25:
        coin25 += coin1 / 25
        coin1 -= (coin1 / 25) * 25
    
    if coin25 > 4:
        coin100 += coin25 / 4
        coin25 -= (coin25 / 4) * 4   
    
    if coin100 > 10:
        paper1000 += coin100 / 10
        coin100 -= (coin100 / 10) * 10
    
coins = coin1 + coin25 + coin100

print coins