Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- #include <bits/stdc++.h>
- using namespace std;
- int main(){
- int tst;
- cin>>tst;
- while(tst--){
- int n;
- cin>>n;
- vector<int> p(n);
- for(auto &e: p) cin>>e;
- int ans = 3;
- for(int i=0; i<n; i++){
- if(p[p[i]-1]==i+1) ans = 2;
- }
- cout<<ans<<"\n";
- }
- }
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement