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  1. #include <bits/stdc++.h>
  2. #define int long long
  3. using namespace std;
  4.  
  5. void solve() {
  6. 	int n;
  7. 	cin>>n;
  8. 	vector<int> v(n);
  9. 	for(int i=0;i<n;i++)cin>>v[i];
  10.     map<int,int> mp;
  11.     for(int i=0;i<n;i++){
  12.     	mp[v[i]]++;
  13.     }
  14.     bool f=false;
  15.     for(auto s:mp){
  16.     	if(s.second==1){
  17.     		f=false;
  18.     		break;
  19.     	}
  20.     	else{
  21.     		f=true;
  22.     	}
  23.     }
  24.     if(f){
  25.     	cout<<0<<endl;
  26.     	return;
  27.     }
  28.  
  29.     int l=0,r=0;
  30.     int p=0,q=0;
  31.     int maxi=0;
  32.     while(r<n){
  33.     	if(mp[v[r]]>1){
  34.     		if(maxi<(r-l+1) && l!=r){
  35.     			maxi=r-l+1;
  36.     			p=l,q=r-1;
  37.     		}
  38.     		r++;
  39.     		l=r;
  40.     	}
  41.     	else{
  42.     		r++;
  43.     	}
  44.     }
  45.     if(maxi<(r-l+1) && l!=r){
  46.     			maxi=r-l+1;
  47.     			p=l,q=r-1;
  48.     		}
  49.     cout<<p+1<<" "<<q+1<<endl;
  50.  
  51.  
  52. }
  53.  
  54. signed main() {
  55.     int t;
  56.     cin >> t;
  57.     while (t--) {
  58.         solve();
  59.     }
  60.     return 0;
  61. }
  62.  
Success #stdin #stdout 0.01s 5288KB
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https://ideone.com/LFTPmp
language:
C++ (gcc 8.3)
created:
3 days ago
visibility:
public

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