#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define sz(a) (int)(a.size())
#define all(a) a.begin(),a.end()
#define lb lower_bound
#define ub upper_bound
#define owo ios_base::sync_with_stdio(0);cin.tie(0);
#define debug(...) fprintf(stderr, __VA_ARGS__),fflush(stderr)
#define time__(d) for(long blockTime = 0; (blockTime == 0 ? (blockTime=clock()) != 0 : false);\
debug("%s time : %.4fs\n", d, (double)(clock() - blockTime) / CLOCKS_PER_SEC))
typedef long long int ll;
typedef long double ld;
typedef pair<ll,ll> PII;
typedef pair<int,int> pii;
typedef vector<vector<int>> vii;
typedef vector<vector<ll>> VII;
ll gcd(ll a,ll b){if(!b)return a;else return gcd(b,a%b);}
int main()
{
owo
int n;
cin>>n;
vector<pii>a;
multiset<int>s;
for(int i=0;i<n;i++){
int x;
cin>>x;
if(s.find(x) == s.end()){
a.pb({i,x});
s.insert(x);
}else{
while(!a.empty() && a.back().se != x){
s.erase(s.find(a.back().se));
a.pop_back();
}
a.back().fi = i;
}
}
int last = -1;
for(auto x:a){
for(int i=last+1;i<=x.fi;i++)cout<<x.se<<'\n';
last = x.fi;
}
}
