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Hack!
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Day 1
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Time Limit: 2.0 s
Memory Limit: 512 MB
Total points: 100
Interactive
#12322. Alien Invasion
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The problem was used in the following contests:
Petrozavodsk Winter 2019. Day 6. Belarusian SU Contest
XIX Open Cup named after E.V. Pankratiev, Grand Prix of Belarus
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