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USER: https://codeforces.com/problemset/problem/1989/F

BOT: Thanks! Now could you provide a link to the editorial.



USER: https://codeforces.com/blog/entry/130988

BOT: Would you like hints to help you solve the problem or an interactive explanation of the editorial (hint/editorial)? 



USER: hint

BOT: What are you current thoughts on the problem?