AtCoder Regular Contest 155

B - Abs Abs Function

https://atcoder.jp/contests/arc155/tasks/arc155_b

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Codeforces Round #844 (Div. 1 + Div. 2, based on VK Cup 2022 - Elimination Round)

D. Many Perfect Squares

https://codeforces.com/contest/1782/problem/D

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Codeforces Round #841 (Div. 2) and Divide by Zero 2022

C. Even Subarrays

https://codeforces.com/contest/1731/problem/C

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Codeforces Round #834 (Div. 3)

F. All Possible Digits

https://codeforces.com/contest/1759/problem/F

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Educational Codeforces Round 138 (Rated for Div. 2)

D. Counting Arrays

https://codeforces.com/contest/1749/problem/D

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Educational Codeforces Round 137 (Rated for Div. 2)

D. Problem with Random Tests

https://codeforces.com/contest/1743/problem/D

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