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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. #define fast_io ios::sync_with_stdio(0); cin.tie(0); cout.tie(0)
  5. #define int long long
  6. #define endl '\n'
  7.  
  8. int32_t main(){
  9.     fast_io;
  10.  
  11.     int t;
  12.     cin>>t;
  13.  
  14.     while(t--){
  15.         int n;
  16.         cin>>n;
  17.  
  18.         vector<int>a(n);
  19.         unordered_map<int,int> f;
  20.  
  21.         for(int i=0;i<n;i++){
  22.             cin>>a[i];
  23.             f[a[i]]++;
  24.         }
  25.  
  26.         int l=-1,r=-1;
  27.         int best=0;
  28.  
  29.         int i=0;
  30.         while(i<n){
  31.             if(f[a[i]]!=1){
  32.                 i++;
  33.                 continue;
  34.             }
  35.  
  36.             int j=i;
  37.             while(j<n && f[a[j]]==1) j++;
  38.  
  39.             if(j-i>best){
  40.                 best=j-i;
  41.                 l=i+1;
  42.                 r=j;
  43.             }
  44.  
  45.             i=j;
  46.         }
  47.  
  48.         if(best==0) cout<<0<<endl;
  49.         else cout<<l<<" "<<r<<endl;
  50.     }
  51.  
  52.     return 0;
  53. }
Success #stdin #stdout 0s 5320KB
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stdin
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3
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stdout
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1 1
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https://ideone.com/B6fq30
language:
C++ (gcc 8.3)
created:
1 hour ago
visibility:
public

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