摘要：
树剖 将一个软件是否安装,看作是sum数组的0或1,对于每个操作前后sum[1]的变化,就是所求 cpp include include include include define lson l,mid,rt'9'){ if(c==' ') fh= 1; c=getchar(); } while( 阅读全文
摘要：
树剖+线段树维护连续相同区间个数 注意什么时候长度要减一 cpp include include include include include define lson l,mid,rt'9'){ if(c==' ') fh= 1; c=getchar(); } while(c ='0'&&cma) 阅读全文
摘要：
迷之TLE cpp include include include include include define lson l,mid,rt'9'){ if(c==' ') fh= 1; c=getchar(); } while(c ='0'&&cma){ ma=siz[v]; son[u]=v; 阅读全文