[tutorial:1411A]↵
[tutorial:1411B]↵
[tutorial:1411C]↵
[tutorial:1411D]↵
[tutorial:1411E]↵
[tutorial:1411F]↵
[tutorial:1411G]↵
[tutorial:1464F]↵
↵
[Code](https://codeforces.net/contest/1464/submission/101915176)↵
↵
Btw, congratulations to [user:Benq,2020-12-20] on first-to-solve this problem!
[tutorial:1411B]↵
[tutorial:1411C]↵
[tutorial:1411D]↵
[tutorial:1411E]↵
[tutorial:1411F]↵
[tutorial:1411G]↵
[tutorial:1464F]↵
↵
[Code](https://codeforces.net/contest/1464/submission/101915176)↵
↵
Btw, congratulations to [user:Benq,2020-12-20] on first-to-solve this problem!