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PKU v. THU (Preliminary Round 2)
Time Limit: 2 s
Memory Limit: 512 MB
# 1841. Little LCS
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Editorial
The problem was used in the following contest:
Petrozavodsk Summer 2021. Day 3. IQ test by kefaa2, antontrygubO_o, and gepardo
XXII Open Cup named after E.V. Pankratiev, Grand Prix of IMO
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