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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5.     int t;
  6.     cin >> t;
  7.     while(t--){
  8.         int n;
  9.         cin >> n;
  10.  
  11.         vector<int>vec(n);
  12.         for(int i=0; i< n; ++i) {
  13.             cin >> vec[i];
  14.         }
  15.  
  16.         unordered_map<int,int> mp;
  17.         for(int i=0; i<vec.size(); ++i) {
  18.             mp[vec[i]]++;
  19.         }
  20.  
  21.         bool flag = true;
  22.         for(int i=0; i<vec.size(); ++i) {
  23.             if(mp[vec[i]] == 1) {
  24.                 flag = false;
  25.                 break;
  26.             }
  27.         }
  28.  
  29.         if(!flag) {
  30.             cout << -1 << endl;
  31.             continue;
  32.         }
  33.  
  34.         vector<int> ans;
  35.         vector<pair<int,int>> pairs;
  36.  
  37.         int i = 0, j = 0;
  38.         while(i < vec.size()) {
  39.             while(j < vec.size() && vec[i] == vec[j]) j++;
  40.  
  41.             pairs.push_back({i, j-1});
  42.             i=j;
  43.         }
  44.  
  45.         for(int i=0; i<pairs.size(); ++i) {
  46.             ans.push_back(pairs[i].second);
  47.             for(int j=pairs[i].first; j < pairs[i].second; ++j) {
  48.                 ans.push_back(j);
  49.             }
  50.         }
  51.  
  52.         for(int i=0; i<ans.size(); ++i) {
  53.             cout << ans[i]+1 << " ";
  54.         }
  55.         cout << endl;
  56.  
  57.  
  58.  
  59.     }
  60.  
  61. }
  62.  
Success #stdin #stdout 0.01s 5284KB
comments (?)
stdin
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2
5
1 1 1 1 1
6
3 6 8 13 15 21
stdout
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5 1 2 3 4 
-1
https://ideone.com/QPkNxp
language:
C++14 (gcc 8.3)
created:
3 days ago
visibility:
public

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