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

n = N // 25
N = N - (n * 25)

m = 25 * (M + n) // 100
M = M + n - (m * 4)

l = (L + m) * 100 // 1000
L = L + m - (l * 10)

print(N + M + L)