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Time Limit: 10 s
Memory Limit: 512 MB
Total points: 100
# 860. We apologize for any inconvenience
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Custom Test
The problem was used in the following contests:
Petrozavodsk Winter 2021. Day 1. Jagiellonian U Contest
XXI Open Cup named after E.V. Pankratiev, Grand Prix of Krakow
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