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Hack!
Time Limit: 2.0 s
Memory Limit: 1024 MB
# 7801. First Solved, Last Coded
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Custom Test
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The problem was used in the following contest:
The 2023 ICPC Northwestern Russia Regional Contest
The 2023 ICPC Armenia Regional Contest
The 2023 ICPC Azerbaijan Regional Contest
The 2023 ICPC Kazakhstan Regional Contest
The 2023 ICPC Taurida Regional Contest
The 2023 ICPC Ural Regional Contest
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