a_kawashiro https://blog.hatena.ne.jp/a_kawashiro/ a_kawashiroのブログ https://a-kawashiro.hatenablog.com/ topcoder 十八番のメモ化再帰。 #include <algorithm> #include <cstring> #include <string> #include <vector> using namespace std; class DancingCouples { public: vector <string> can; int bn,gn; int cache[11][11][(1<<10)]; int rec(int b,int K,int left) { int &r=cache[b][K][left]; if(r!=-1) return r; if(K==0) return r=1; if… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa-kawashiro.hatenablog.com%2Fentry%2F20110318%2F1300445351" title="SRM416 div2 hard - a_kawashiroのブログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2011-03-18 19:49:11 rich https://a-kawashiro.hatenablog.com/entry/20110318/1300445351 1.0 100%