Given a number $N$ that represents the block

number where John is standing.

Write a program that reads the number

representing the block number of John and prints

the block number that is nearest to John's block

number. If multiple treasure boxes are at the same

distance from John's block number, print the

block number that is in the forward direction to

him $($block number that is greater than John's

block number$).$

If multiple treasure boxes are at the same

distance from John's block number, print the

block number that is in forward direction to

him $($block number that is greater than John's