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Description The Berland Forest can be represented as an infinite cell plane. Every cell contains a tree. That is, contained before the recent events. A destructive fire raged through the Forest, and s...

Codeforces Round #604 (Div. 2) D. Beautiful Sequence（贪心） 传送门 Beautiful Sequence time limit per test1 second memory limit per test256 megabytes inputstandard input outputstandard output An integer sequ...