We will buy a product for N yen (the currency of Japan) at a shop.  If we use only 1000-yen bills to pay the price, how much change will we receive?  Assume we use the minimum number of bills required.
N = int(input())
ans = ((N/1000) + 1)*1000 - N
print(ans)
N = int(input())
if N % 1000 == 0:
  ans = 0
else:
  ans = 1000 - N % 1000
print(ans)