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yaoyuchen

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  • Friend of: 14 users
  • Last visit: 2 months ago
  • Registered: 4 years ago
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228 problems
solved for all time
181 problems
solved for the last year
0 problems
solved for the last month
5 days
in a row max.
5 days
in a row for the last year
0 days
in a row for the last month