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Hack!
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PKU v. THU (Preliminary Round 2)
Time Limit: 2.0 s
Memory Limit: 256 MB
Hackable ✓
# 7202. Easy When You Know How
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The problem was used in the following contest:
ICPCCamp 2016. Day 2. Zhejiang U Contest
Petrozavodsk Winter 2016. Day 5. Zhejiang U Contest (Xi Lin Contest 1)
This problem is prepared by
zimpha
.
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