Last contest problem c my solution passed pretests but got hacked. When I tried to resubmit it, it passed main tests.↵
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There is probably some solution that didn't get hacked.↵
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[HackedAC submission](https://codeforces.me/contest/1743/submission/176884004)↵
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[ACHacked submission](https://codeforces.me/contest/1743/submission/176720558) ↵
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There is probably some solution that didn't get hacked.↵
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