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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std ;
  4.  
  5. int main() 
  6. {
  7.     int testcases ;
  8.  
  9.     cin >> testcases ;
  10.  
  11.     while(testcases--) {
  12.  
  13.         int n ;
  14.  
  15.         cin >> n ;
  16.  
  17.         int a[n] , maxi = 0 ;
  18.  
  19.         map < int , int > mp ;
  20.  
  21.         for(int i = 0 ; i < n ; ++i) {
  22.  
  23.             cin >> a[i] ;
  24.             mp[a[i]]++ ;
  25.  
  26.         }
  27.  
  28.         for(auto x:mp) {
  29.             maxi = max(maxi , x.second) ;
  30.         }
  31.  
  32.         // int p = mp.size() ; 
  33.  
  34.         if((maxi - (mp.size() - 1)) >= 2) {
  35.             cout << mp.size() << "\n" ; 
  36.         }
  37.         else if((maxi - mp.size())  >= 0) {
  38.             cout << mp.size() - 1 << "\n" ;
  39.         }
  40.         else {
  41.             cout << maxi << "\n" ; 
  42.         }
  43.  
  44.     }
  45.     return 0 ;
  46. }
Success #stdin #stdout 0s 4352KB
comments (?)
stdin
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4
7
4 2 4 1 4 3 4
5
2 1 5 4 3
1
1
4
1 1 1 3
stdout
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3
5
0
2
https://ideone.com/LumeWD
language:
C++ (gcc 8.3)
created:
3 years ago
visibility:
public

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