Reverse a Number

Difficulty: 900 2000 ms 128 MB

implementation

Print N with its decimal digits reversed. Leading zeros disappear in the result (e.g. 1200 becomes 21).

Input: one integer N.

Output: the reversed number, without leading zeros.

Constraints:

• 0 ≤ N ≤ 10¹⁸

Sample Tests

1230

321

405

504

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