Remove Duplicate

#include <iostream>
#include <list>

using namespace std;

int  main() {
list <int> m;
int n;
cin >> n;
int x;
for (int i=0; i<n; i++) {
cin >> x;
m.push_back(x);
}
m.unique();
for (auto v:m)
cout << v << " ";
return 0;
}

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