Код:
#include <iostream>
using namespace std;
int main()
{
int arrsize;
cout << "Arrsize: ";
cin >> arrsize;
int* arr = new int[arrsize];
for(int i = 0; i < arrsize; i++)
cin >> arr[i];
for(int i = 0; i < arrsize; i++)
{
for (int j = i + 1; j < arrsize; j++)
{
if(arr[i] == arr[j])
{
bool wasBefore = false;
for(int k = 0; k < i; k++)
{
if(arr[k] == arr[i])
{
wasBefore = true;
break;
}
}
if(!wasBefore)
cout<<arr[i]<<" ";
break;
}
}
}
return 0;
}
