In yesterday's AtCoder Beginner Contest 280 I didn't able to solve D. Then I was looking for solution and after seeing this submission I was shocked. Can anyone tell me how the logic work for this problem submission?
Thanks.
In yesterday's AtCoder Beginner Contest 280 I didn't able to solve D. Then I was looking for solution and after seeing this submission I was shocked. Can anyone tell me how the logic work for this problem submission?
Thanks.
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