제출 #162857

#제출 시각아이디문제언어결과실행 시간메모리
162857lukameladze게임 (IOI14_game)C++14
100 / 100
488 ms25456 KiB
# include <bits/stdc++.h> using namespace std; int N,a,b,d[2250001],p[2250001],mp[1505][1505]; void initialize(int n) { N=n; for (int i=0; i<N; i++) { p[i]=i; d[i]=1; } } int get_col(int a) { if (p[a]==a) return p[a]; p[a]=get_col(p[a]); return p[a]; } void col(long long a, long long b) { b=get_col(b); a=get_col(a); if (a==b) return; d[b]+=d[a]; d[a]=0; p[a]=b; } int hasEdge(int u ,int v) { u=get_col(u); v=get_col(v); mp[u][v]++; mp[v][u]++; if (mp[u][v]==d[u]*d[v]) { if (d[u]>=d[v]) swap(u,v); col(u,v); for (int i=0; i<N; i++) { mp[v][i]+=mp[u][i]; mp[i][v]+=mp[i][u]; } return 1; } else return 0; }
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