Codeforces Round #603 (Div. 2)
A. Sweet Problem You have three piles of candies: red, green and blue candies: the fi ...
原文：Codeforces Round #603 (Div. 2) D. Secret Passwords 并查集
D. Secret Passwords One unknown hacker wants to get the admin s password of AtForces testing system, to get problems from the next contest. To achieve that, he sneaked into the administrator s office ...
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