Today I'm going to present the tasks from Codeforces Round #742, a round authored by some of my friends, a round full of interesting and enjoyable tasks for everyone who joins it.
Here I present problem B, an interesting problem involving two common operations found in competitive programming problems which can be combined in an interesting way here
POTW Playlist: https://www.youtube.com/playlist?list=PLS3KRNU_CGM7VtLVy2D84acA-1kfXqdAf
Codeforces Problem Tutorials: https://www.youtube.com/playlist?list=PLS3KRNU_CGM7Go2ecHhN0-HBWm_6E5QLI
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