#import<bits/stdc++.h>
int N,i,j,a;main(){std::map<int,int>e,s,A;for(;std::cin>>a;N?e[A[i]=a]=i++:N=a);for(;s[a=A[j]]=a;e[a]<++j&&s.erase(a))printf("%d ",rbegin(s)->first);}