#include <iostream>
#include <vector>
#include <map>
using namespace std;
const int N = 1<<18;
int a[N], prv[N];
map<int, vector<int>> occ;
void print(int n){
if (n == 0)
return;
print(prv[n]);
for (int j=prv[n];j<n;j++)
cout<<a[n]<<' ';
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
int n;
cin>>n;
for (int i=1;i<=n;i++){
cin>>a[i];
if (occ[a[i]].size() == 0)
prv[i] = i-1;
else{
for (int j=i-1;j > occ[a[i]].back();j = prv[j])
occ[a[j]].pop_back();
prv[i] = prv[occ[a[i]].back()];
occ[a[i]].pop_back();
}
occ[a[i]].push_back(i);
}
print(n);
cout<<'\n';
}
