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 = input()
n_ = int(n)%1000
print(n_)
n = input()
if int(n)%1000==0:
    print(0)
else:
    n_ = 1000-(int(n)%1000)
    print(n_)