Ngày nguyên tố

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Problem type
Points: 800 (p) Time limit: 1.0s Memory limit: 256M Input: stdin Output: stdout

Example

Sample input 1

07/07/0777

Sample output 1

05/07/0777
11/07/0777

Sample input 2

03/13/1234

Sample output 2

02/13/1234
05/13/1234

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