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Time Limit: 2 s
Memory Limit: 512 MB
Total points: 100
Difficulty:
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1
#1839. Joke
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Tutorial (简体中文, by @ezoilearner)
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Editorial
The problem was used in the following contests:
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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