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  1. #include <iostream>
  2. using namespace std;
  3. int tab[1000001]; 
  4. int main() {
  5.     int n, x, ile = 0;
  6.    	cin >> n;
  7.  
  8.     for (int i = 0; i < n; i++) {
  9.         cin >> x;
  10.         tab[x]++;
  11.     }
  12.  
  13.     for (int j = 0; j <= 1000000; j++) {
  14.         if (tab[j] == 1) {
  15.             ile++;
  16.         }
  17.     }
  18.  
  19.     cout << ile;
  20.  
  21.     return 0;
  22. }
Success #stdin #stdout 0.01s 5280KB
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stdin
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5
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stdout
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3
https://ideone.com/rEY6W0
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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