This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
*/
#include <bits/stdc++.h>
#define taskname ""
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define pii pair<int, int>
#define vi vector<int>
#define vii vector<pii>
#define isz(x) (int)x.size()
using namespace std;
const int mxN = 2e5 + 5;
const int mod = 1e9 + 7;
const ll oo = 1e18;
int n;
map<int, int> mp;
vector<pair<int, pii>> cope;
void solve() {
cin >> n;
for(int i = 1; i <= n; ++i) {
int val; cin >> val;
int cnt = mp[val];
if(cnt) {
while(cope.back().ff != val) {
--mp[cope.back().ff];
cope.pop_back();
}
int l = cope.back().ss.ff;
cope.pop_back();
cope.pb({val, {l, i}});
}
else {
mp[val]++;
cope.pb({val, {i, i}});
}
}
for(auto tmp : cope) {
for(int i = tmp.ss.ff; i <= tmp.ss.ss; ++i)
cout << tmp.ff << " ";
}
cout << endl;
}
signed main() {
#ifndef CDuongg
if(fopen(taskname".inp", "r"))
assert(freopen(taskname".inp", "r", stdin)), assert(freopen(taskname".out", "w", stdout));
#else
freopen("bai3.inp", "r", stdin);
freopen("bai3.out", "w", stdout);
auto start = chrono::high_resolution_clock::now();
#endif
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
int t = 1; //cin >> t;
while(t--) solve();
#ifdef CDuongg
auto end = chrono::high_resolution_clock::now();
cout << "\n"; for(int i = 1; i <= 100; ++i) cout << '=';
cout << "\nExecution time: " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
#endif
}
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