{"version":"1.0","image_url":null,"type":"rich","height":"190","provider_name":"Hatena Blog","categories":["topcoder"],"description":"#include <algorithm> #include <string> #include <vector> typedef long long LL; using namespace std; class PrefixFreeSubsets { public: LL cantPrefFreeSubsets(vector <string> words) { int n=words.size(); LL ans[60]; ans[n]=1; sort(words.begin(),words.end()); for(int i=n-1;0<=i;i--) { int j=i+1; while(\u2026","url":"https://a-kawashiro.hatenablog.com/entry/20110421/1303391776","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa-kawashiro.hatenablog.com%2Fentry%2F20110421%2F1303391776\" title=\"SRM330 div1 medium - a_kawashiro\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://a-kawashiro.hatenablog.com/","author_url":"https://blog.hatena.ne.jp/a_kawashiro/","blog_title":"a_kawashiro\u306e\u30d6\u30ed\u30b0","published":"2011-04-21 22:16:16","width":"100%","title":"SRM330 div1 medium","provider_url":"https://hatena.blog","author_name":"a_kawashiro"}