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

aN = N // 25
N = N - aN*25
M += aN
aM = M // 4
L += aM
M = M - aM*4
aL = L // 10
L = L - aL*10

print(N + M + L)