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  1. #include<iostream>
  2. #include<algorithm>
  3. using namespace std;
  4.  
  5. int main()
  6. {
  7.     int n;
  8.     cin >> n;
  9.  
  10.     int arr[n];
  11.  
  12.     for(int i = 0; i <n; i++){
  13.         cin >> arr[i];
  14.     }
  15.  
  16.     sort(arr, arr+n);
  17.  
  18.     int a {1};
  19.     int l {};
  20.  
  21.     for(int i = 0; i < n; i++){
  22.         if(arr[i] != arr[l]){
  23.             a++;
  24.             l = i;
  25.         }
  26.     }
  27.  
  28.     cout << a << endl;
  29.  
  30.  
  31.  
  32. }
  33.  
Success #stdin #stdout 0s 5320KB
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Standard input is empty
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254
https://ideone.com/mWkdv5
language:
C++ (gcc 8.3)
created:
5 days ago
visibility:
public

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