B. Mike's Sequencetime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputYou won't find this sequence on OEIS.InputOne integer r (-45 \le r \le 2999).OutputOne integer.ExampleInput
2999
Output
3000

2999

3000 
['*special problem', 'divide and conquer', 'implementation', 'math']