CodeForces 1406 - Codeforces Round #670 (Div. 2) Editorial
Contest Overview
This round was relatively straightforward, so this editorial will focus on both the technical problem solutions and the interesting sequence of events during the contest.
Problem A - Subset Mex
Problem Statement: Given a set a with |a| = n, partition it into two sets A and B to maximize mex(A) + mex(B). Multiple test cases.
Con ...
Posted on Tue, 06 Oct 2026 16:45:21 +0000 by Brendan Nolan