xiaoyu1_1的专栏

#include #include template inline bool scan_d(T &ret){ char c;bool sgn; if(c=getchar(),c==EOF)return 0; while(c!='-'&&(c'9'))c=getchar(); sgn=(c=='-'); ret=sgn?0:(c-'0

//对  sort(p,p+n); n=unique(p,p+n)-p;

int k = lower_bound(p,p+cnt,val)-p;