/*
 * ????????.cpp
 *
 *  Created on: 2011-10-21
 *      Author: ??
 */
int main(){
   int n,l;
   cin>>n;
   int m[n];                   //???
   for (int i=0;i<n;i++)
     cin>>m[i];                 //?????
   int cishu[101]={0};            //?????,?????????????
   for (int i=0;i<n;i++)          //??????????
     {
      cishu[m[i]]++;
      if (cishu[m[i]]>=2)         //??????.???????
         m[i]=0;
     }
   for (int i=0;i<n;i++)         //??
     {
     if (i==0)
       cout<<m[i];
     else
       if (m[i]!=0)
         cout<<" "<<m[i];
     }
   return 0;
   
}

