{"type":"rich","published":"2020-12-01 14:34:34","image_url":null,"provider_url":"https://hatena.blog","provider_name":"Hatena Blog","url":"https://bqn2.hatenablog.com/entry/2020/12/01/143434","author_name":"bqn2","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fbqn2.hatenablog.com%2Fentry%2F2020%2F12%2F01%2F143434\" title=\"Educational Codeforces Round 98 (Rated for Div. 2) D. Radio Towers   - \u4eba\u9593\u3060\u3051\u3069\u7af6\u30d7\u30ed\u3084\u308b\" 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://bqn2.hatenablog.com/","width":"100%","categories":["Codeforces"],"author_url":"https://blog.hatena.ne.jp/bqn2/","blog_title":"\u4eba\u9593\u3060\u3051\u3069\u7af6\u30d7\u30ed\u3084\u308b","height":"190","description":"DP\u96e3\u3057\u3044\u3002 \u5168\u4e8b\u8c61\u306f\u5854\u3092\u5efa\u3066\u308b\u304b\u5efa\u3066\u306a\u3044\u304b\u306e2\u901a\u308a\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3001\u901a\u308a\u3002\u3053\u306e\u3046\u3061\u984c\u610f\u3092\u307f\u305f\u3059\u5854\u306e\u7acb\u3066\u65b9\u306e\u30d1\u30bf\u30fc\u30f3\u6570\u306e\u78ba\u7387\u3092\u6c42\u3081\u308c\u3070\u826f\u3044\u3002 \u826f\u3044\u5854\u306e\u5efa\u3066\u65b9\u306f\u3001\u5947\u6570\u306e\u548c\u3067N\u306b\u306a\u308b\u5834\u5408\u306e\u6570\u306a\u306e\u3067\u3001\u3053\u308c\u3092DP\u3067\u6c42\u3081\u305f\u3044\u3002 \u6c17\u3065\u304d \u7d2f\u7a4d\u548c\uff0bDP\u306f\u8cb0\u3046DP\u306e\u307b\u3046\u304c\u898b\u3048\u3084\u3059\u3044 \u6700\u521d\u914d\u308bDP\u3067\u8003\u3048\u3066\u3044\u3066\u3001\u7d2f\u7a4d\u548c\u3067\u8a08\u7b97\u91cf\u3092\u843d\u3068\u305b\u308b\u3053\u3068\u306b\u6c17\u3065\u304b\u306a\u304b\u3063\u305f\u3002 \u8cb0\u3046DP\u3067\u8003\u3048\u3066\u3001\u3042\u308b\u30a4\u30f3\u30c7\u30c3\u30af\u30b9k\u306e\u3068\u304d\u306b\u3069\u3053\u304b\u3089\u9077\u79fb\u3057\u3066\u304f\u308b\u304b\u3092\u8003\u3048\u308b\u3068\u3001 k-1,k-3,k-5,...1\u307e\u305f\u306f0\uff08\u5076\u5947\u3067\u5909\u308f\u308b\uff09 \u3068\u306a\u308b\u3002 \u9077\u79fb\u3068\u3057\u3066\u66f8\u304f\u3068\u3001 dp[i] = dp[i-1] + dpi[i-3]+ dp[i-5] + ... dp[0\u2026","title":"Educational Codeforces Round 98 (Rated for Div. 2) D. Radio Towers  "}