Codeforces Community, i need some help with problem.
Hello, about 4 months ago i tried to solve 678F - Lena and Queries using LI Chao tree and trick to delete lines from it(trick), but got WA9. After that i stopped trying to solve it. But today i started from the very beginning and still it is WA9. Here is my last submission: 100175660. Can you help me?
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