L, M, N = [int(input()) for _ in range(3)]

q, r = divmod(N * 1, 25)
M += q
N = r // 1

q, r = divmod(M * 25, 100)
L += q
M = r // 25

_, r = divmod(L * 100, 1000)
L = r // 100

ans = (L + M + N)
print(ans)