L = int(input())# 100
M = int(input())# 25
N = int(input())# 1

money = L * 100 + M * 25 + N
coins = money % 1000
l = coins // 100
m = (coins - l * 100) // 25
n = coins - (l * 100 + m * 25)
print(l + m + n)