Readable Numbers

Difficulty: 900 2000 ms 128 MB

implementation

Print N with dots as thousands separators: 1234567 becomes 1.234.567.

Input: one integer N.

Output: N grouped in threes from the right, separated by dots.

Constraints:

• 0 ≤ N ≤ 10¹⁸

Sample Tests

1234567

1.234.567

42

42

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