http://codeforces.com/gym/100633/problem/B B. Dispersed parentheses time limit per test 2 seconds me … Continue reading B. Dispersed parentheses 记忆化搜索 + 括号序列的状压表示
http://codeforces.com/gym/100633/problem/B B. Dispersed parentheses time limit per test 2 seconds me … Continue reading B. Dispersed parentheses 记忆化搜索 + 括号序列的状压表示