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

total_money = 100*L + 25*M + N

# 両替時に必要な1000円札の枚数
nums_1000 = total_money // 1000

# 999円以下の出力
remain = total_money - nums_1000*1000

# 100円玉の数
nums_100 = remain // 100

# 99円以下の出力
remain = remain - nums_100*100

nums_25 = remain // 25

remain = remain - nums_25*25

nums_1 = remain

print(nums_100 + nums_25 + nums_1)