DP一生之敌 learn from AC-Panda and codeforces’s Tutorial
思路 d p [ i ] dp[i] dp[i] 表示以 a [ i ] a[i] a[i] 结尾的方案数, s u m [ i ] sum[i] sum[i] 表示 ∑ j 1 i d p j \sum\limits_{j1}^idp_j j1∑idpj 。对于 d p [ i ] dp[i] dp[i] 当 …
最近在开发Flink SQL的时候,需要关联Kafka事实表和MySQL维表,得到的数据写入Phoenix表中,但是其中有个字段,Kafka表、MySQL表和Phoenix表都是BigData类型,但是在实现的时候却报“java.math.BigInteger cannot be cast to java.lang.Long”异常,从报错信息来看,是由于Big…
参考链接
参考链接
1. 跨域报错示例 Access to XMLHttpRequest at http://127.0.0.1:3000/ from origin http://localhost:3000 has been blocked by CORS policy: Response to preflight request doesnt pass access control check: No Access-Control-Allow-Origin header…