#pragma GCC optimize("Ofast,no-stack-protector") #pragma GCC target("avx") #pragma GCC optimize("Ofast") #pragma GCC optimize ("unroll-loops") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #include "bits/stdc++.h" #define MAXN 100009 #define INF 1000000007 #define mp(x,y) make_pair(x,y) #define all(v) v.begin(),v.end() #define pb(x) push_back(x) #define wr cout<<"----------------"<v; while(q--){ int t=getInt(); f|=(t<3); if(t==1){ int x=getInt(),y=getInt(); v.pb(mp(x,y)); } else if(t==2){ int x=getInt(); while(x-- and !v.empty()) v.pop_back(); } else{ if(f){ for(int i=1;i<=n;i++) ata[i]=i,sz[i]=1; tr(it,v) merge(it->ff,it->ss); f=0; } int x=getInt(),y=getInt(); if(tap(x)==tap(y)) puts("0"); else puts("0"); } } return 0; }