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yangk_12

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  • Friend of: 5 users
  • Last visit: 12 days ago
  • Registered: 16 months ago
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167 problems
solved for all time
88 problems
solved for the last year
1 problem
solved for the last month
11 days
in a row max.
9 days
in a row for the last year
1 day
in a row for the last month