File tree 1 file changed +39
-3
lines changed
1 file changed +39
-3
lines changed Original file line number Diff line number Diff line change 1
1
// Authored by : BaaaaaaaaaaarkingDog
2
2
// Co-authored by : -
3
- // http://boj.kr/****************
3
+ // http://boj.kr/bf81d062967a4ba2993ba38a135b2bab
4
4
#include < bits/stdc++.h>
5
5
using namespace std ;
6
6
7
- int main (void ){
7
+ vector<int > p (1000001 , -1 );
8
+
9
+ int find (int x){
10
+ if (p[x] < 0 )
11
+ return x;
12
+ return p[x] = find (p[x]);
13
+ }
14
+
15
+ bool uni (int u, int v){
16
+ u = find (u);
17
+ v = find (v);
18
+ if (u == v)
19
+ return false ;
20
+ if (p[v] < p[u]) // v의 랭크가 더 큰 경우
21
+ swap (u, v); // u, v를 swap
22
+ // 위의 if문으로 인해 u의 랭크 >= v의 랭크이다
23
+ if (p[u] == p[v]) // 랭크가 같은 경우에 대한 처리
24
+ p[u]--;
25
+ p[v] = u; // v를 u의 자식으로 만든다
26
+ return true ;
27
+ }
28
+
29
+ int main (){
8
30
ios::sync_with_stdio (0 );
9
31
cin.tie (0 );
10
32
11
- }
33
+ int n, m;
34
+ cin >> n >> m;
35
+ while (m--){
36
+ int q, a, b;
37
+ cin >> q >> a >> b;
38
+ if (q == 0 )
39
+ uni (a, b);
40
+ else {
41
+ if (find (a) == find (b))
42
+ cout << " YES\n " ;
43
+ else
44
+ cout << " NO\n " ;
45
+ }
46
+ }
47
+ }
You can’t perform that action at this time.
0 commit comments