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Lucky Year

1000ms 262144K

Description:

Apart from having lots of holidays throughout the year, residents of Berland also have whole lucky years. Year is considered lucky if it has no more than 1 non-zero digit in its number. So years 100, 40000, 5 are lucky and 12, 3001 and 12345 are not.

You are given current year in Berland. Your task is to find how long will residents of Berland wait till the next lucky year.

Input:

The first line contains integer number n (1 ≤ n ≤ 109) — current year in Berland.

Output:

Output amount of years from the current year to the next lucky one.

Sample Input:

4

Sample Output:

1

Sample Input:

201

Sample Output:

99

Sample Input:

4000

Sample Output:

1000

Note:

In the first example next lucky year is 5. In the second one — 300. In the third — 5000.

Info

CodeForces

Provider CodeForces

Origin Educational Codeforces Round 21

Code CF808A

Tags

implementation

Submitted 187

Passed 76

AC Rate 40.64%

Date 03/04/2019 15:56:25

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