Codeforces Round #428 (Div. 2) 題解 (藍 -> 紫)

比賽連接：http://codeforces.com/contest/839 寫個題解記念上紫 A. Arya and Bran time limit per test: 1 second memory limit per test: 256 megabytes Bran and his older sister Arya are from the same house. Bran like ca

>>阅读原文<<