Sorry for such difficulty balance. Here is the editorial.↵
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[tutorial:1182A]↵
[Solution Code for A](https://mirror.codeforces.com/contest/1182problemset/submission/1182/554704378830)↵
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**Behind story of B: Original B was harder. None of 2100+ rated testers solved original B, so it got downgraded. Also there was more than 15 pretests before.**↵
[tutorial:1182B]↵
[Solution Code for B](https://mirror.codeforces.com/contest/1182problemset/submission/1182/554704548850)↵
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**Behind story of C: C is created before few days to contest. If there was no current C, the contest would have hell balances.**↵
[tutorial:1182C]↵
[Solution Code for C](https://mirror.codeforces.com/contest/1182problemset/submission/1182/554705058862)↵
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**Behind story of D: Honestly I predicted D as hell hard problem. But other high rated people said it's not that hard.**↵
[tutorial:1182D]↵
[Solution Code for D](https://mirror.codeforces.com/contest/1182problemset/submission/1182/554705328873)↵
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**Behind story of E: I didn't expected such well-known problem. My solution for E is more complicated.**↵
[tutorial:1182E]↵
[Solution Code for E](https://mirror.codeforces.com/contest/1182problemset/submission/1182/554705428881)↵
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**Behind story of F: This problem was located at D originally.**↵
[tutorial:1182F]↵
[Solution Code for F](https://mirror.codeforces.com/contest/1182problemset/submission/1182/554705558889)
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[tutorial:1182A]↵
[Solution Code for A](https://mirror.codeforces.com/
↵
**Behind story of B: Original B was harder. None of 2100+ rated testers solved original B, so it got downgraded. Also there was more than 15 pretests before.**↵
[tutorial:1182B]↵
[Solution Code for B](https://mirror.codeforces.com/
↵
**Behind story of C: C is created before few days to contest. If there was no current C, the contest would have hell balances.**↵
[tutorial:1182C]↵
[Solution Code for C](https://mirror.codeforces.com/
↵
**Behind story of D: Honestly I predicted D as hell hard problem. But other high rated people said it's not that hard.**↵
[tutorial:1182D]↵
[Solution Code for D](https://mirror.codeforces.com/
↵
**Behind story of E: I didn't expected such well-known problem. My solution for E is more complicated.**↵
[tutorial:1182E]↵
[Solution Code for E](https://mirror.codeforces.com/
↵
**Behind story of F: This problem was located at D originally.**↵
[tutorial:1182F]↵
[Solution Code for F](https://mirror.codeforces.com/
