Codeforces Round #630 (Div. 2)
传送门 A. Exercising Walk 显然横纵坐标我们可以分开考虑。 假设只考虑横坐标，若\(x_2\not ={x_1}\)，那么向左/向右走可以互相抵消，然后只能往一个方向走；若\(x ...
原文：[Codeforces Round #630 (Div. 2)] - E. Height All the Same （组合数学）
Codeforces Round Div. E. Height All the Same 组合数学 E. Height All the Same time limit per test seconds memory limit per test megabytes input standard input output standard output Alice has got addicted ...
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