словарь

#include <iostream>
#include <cmath>
#include <string>

using namespace std;

int main()
{
  int n, c = 0, index = 0;
  cin >> n;
  string *arr = new string[n];
  string *result = new string[n];

  for (int i = 0; i<n; i++)
  {
    cin >> arr[i];
    for (int j = 0; j < i; j++)
     if (arr[i] == result[j])
     index++;
    if (index == 0)
    result[c++] = arr[i];
    index = 0;
  }

for (int i = 0; i < n; i++)
 cout << result[i] << " ";
}