a_kawashiro https://blog.hatena.ne.jp/a_kawashiro/ a_kawashiroのブログ https://a-kawashiro.hatenablog.com/ topcoder 丸写し上等！ ・・・・・・・解けへんかった #include <algorithm> #include <utility> #include <vector> #define INF (1<<29) using namespace std; class TheSumOfLuckyNumbers { public: int DP[1000000+1]; bool isLucky(int n) { while(0<n) if(n%10!=4 && n%10!=7) return false; else n/=10; return true; } vector <int> sum(int n) { … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa-kawashiro.hatenablog.com%2Fentry%2F20110318%2F1300432280" title="SRM403 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 16:11:20 rich https://a-kawashiro.hatenablog.com/entry/20110318/1300432280 1.0 100%