All problems were prepared on Polygon by me, so if you faced any problems (we know about A) I am really sorry about it.
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Idea: shishyando
Jury solution: 93270185
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Idea: Artyom123
Jury solution: 93270197
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Idea: shishyando
Jury solution: 93270219
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Idea: Artyom123
Jury solution: 93270232
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Idea: shishyando
Jury solution: 93270267
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Jury solution: 93270282