제출 #1013950

#제출 시각아이디문제언어결과실행 시간메모리
1013950amirhoseinfar1385게임 (IOI14_game)C++17
100 / 100
254 ms16720 KiB
#include "game.h" #include<bits/stdc++.h> using namespace std; const int lg=14,maxn=(1<<lg),kaf=(1<<lg); struct segment{ struct node{ int cnt,res; node(){ cnt=res=0; } }; node seg[(1<<(lg+1))]; void insert(int i){ i+=kaf; seg[i].cnt++; i>>=1; while(i>0){ seg[i].cnt++; seg[i].res=seg[(i<<1)].cnt*seg[(i<<1)^1].cnt; i>>=1; } return ; } int pors(int i,int l,int r,int tl,int tr){ if(!(tl>=l&&tr<=r)){ return 0; } int m=(l+r)>>1; if(tl<=m&&tr>m){ if(seg[i].res==1){ return 1; }else{ seg[i].res--; return 0; } } return pors((i<<1),l,m,tl,tr)+pors((i<<1)^1,m+1,r,tl,tr); } }seg; void initialize(int n) { for(int i=0;i<n;i++){ seg.insert(i); } } int hasEdge(int u, int v) { if(u>v){ swap(u,v); } return seg.pors(1,0,kaf-1,u,v); }
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