AIM Tech Round 5 (rated, Div. 1 + Div. 2) C. Rectangles 【矩阵交集】

题目传传传送门：http://codeforces.com/contest/1028/problem/C C. Rectangles time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given nn rectan

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