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Problem HHlaupafmæli

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Image from flickr.com

Little Gunna was born the 29th of February 2020. This day, 29th of February, is a bit special. The reason is that the month of February usually only has 28 days. Only on special years, leap years, February has 29 days. This is a bit odd for Gunna since she can only celebrate her birthday on leap years.

A year is a leap year if it is divisible by $4$. The only exception to this are years divisible by $100$, those are not leap years unless they are divisible by $400$. For example the years $2020, 2024$ and $2400$ are leap years but the years $2022, 2023$ and $2100$ aren’t.

Given a year, can you help Gunna figure out what birthday she is celebrating that year?

Input

The input contains a single integer $Y$ ($2\, 021 \leq Y \leq 10^{18}$), the year Gunna is asking about.

Output

Print a single line with the number of the birthday Gunna is celebrating that year or ‘Neibb’ if she’s not celebrating a birthday that year.

Scoring

 Group Points Constraints 1 25 $Y \leq 2\, 400$ 2 35 $Y \leq 10^6$ 3 40 No further constraints
Sample Input 1 Sample Output 1
2028

2

Sample Input 2 Sample Output 2
2200

Neibb

Sample Input 3 Sample Output 3
2400

92

Sample Input 4 Sample Output 4
2020202020202020

489898989898500

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