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

# Step 1: Convert 1 yen to 25 yen coins
q = N // 25
M += q
N %= 25

# Step 2: Convert 25 yen to 100 yen coins
p = M // 4
L += p
M %= 4

# Step 3: Convert 100 yen to 1000 yen notes
r = L // 10
L %= 10

print(L + M + N)