CF1617 A. Forbidden Subsequence
CF1617 B. GCD Problem
CF1617 C. Paprika and Permutation
CF1621 B. Integers Shop
2022.01.04 水题
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2022-01-04
CF1617 A. Forbidden Subsequence
CF1617 B. GCD Problem
CF1617 C. Paprika and Permutation
CF1621 B. Integers Shop
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