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// Authored by : BaaaaaaaaaaarkingDog | ||
// Co-authored by : - | ||
// http://boj.kr/**************** | ||
// http://boj.kr/bf81d062967a4ba2993ba38a135b2bab | ||
#include <bits/stdc++.h> | ||
using namespace std; | ||
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int main(void){ | ||
vector<int> p(1000001, -1); | ||
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int find(int x){ | ||
if(p[x] < 0) | ||
return x; | ||
return p[x] = find(p[x]); | ||
} | ||
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bool uni(int u, int v){ | ||
u = find(u); | ||
v = find(v); | ||
if(u == v) | ||
return false; | ||
if(p[v] < p[u]) // v의 랭크가 더 큰 경우 | ||
swap(u, v); // u, v를 swap | ||
// 위의 if문으로 인해 u의 랭크 >= v의 랭크이다 | ||
if(p[u] == p[v]) // 랭크가 같은 경우에 대한 처리 | ||
p[u]--; | ||
p[v] = u; // v를 u의 자식으로 만든다 | ||
return true; | ||
} | ||
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int main(){ | ||
ios::sync_with_stdio(0); | ||
cin.tie(0); | ||
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} | ||
int n, m; | ||
cin >> n >> m; | ||
while(m--){ | ||
int q, a, b; | ||
cin >> q >> a >> b; | ||
if(q == 0) | ||
uni(a, b); | ||
else{ | ||
if(find(a) == find(b)) | ||
cout << "YES\n"; | ||
else | ||
cout << "NO\n"; | ||
} | ||
} | ||
} |