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read through the:

solved problems questions last update state
1 - 16 March 25, 97 finished
17 - 21 March 25, 97 finished
22 - 36 April 14, 97 finished
37 - 49 June 20, 97 finished
50 - 65 August 15, 97 answered some
66 - 81 June 22, 97 none answered yet
82 - 99 December 4, 99 none answered yet
100 - 102 December 4, 99 none answered yet
unsolved problems . . .


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