Codeforces Round #630 (Div. 2)
傳送門 A. Exercising Walk 顯然橫縱坐標我們可以分開考慮。 假設只考慮橫坐標，若\(x_2\not ={x_1}\)，那么向左/向右走可以互相抵消，然后只能往一個方向走；若\(x ...
原文：[Codeforces Round #630 (Div. 2)] - E. Height All the Same （組合數學）
Codeforces Round Div. E. Height All the Same 組合數學 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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