This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "bits/extc++.h"
using namespace std;
template <typename T, typename... U>
void dbgh(const T& t, const U&... u) {
cerr << t;
((cerr << " | " << u), ...);
cerr << endl;
}
#ifdef DEBUG
#define dbg(...) \
cerr << "L" << __LINE__ << " [" << #__VA_ARGS__ << "]" \
<< ": "; \
dbgh(__VA_ARGS__)
#else
#define cerr \
if (false) \
cerr
#define dbg(...)
#endif
#define endl "\n"
#define long int64_t
#define sz(x) int((x).size())
template <typename T>
int q_lb(const vector<T>& arr, const T& x) {
return int(lower_bound(begin(arr), end(arr), x) - arr.begin());
}
struct Node {
int lc, rc;
} heap[10 << 20];
int n, h_ind = 1;
void alloc(int& o) {
heap[h_ind] = heap[o];
o = h_ind++;
}
void insert(int& o, int l, int r, int ind) {
alloc(o);
if (l == r) {
return;
}
int mid = (l + r) / 2;
if (ind <= mid) {
insert(heap[o].lc, l, mid, ind);
} else {
insert(heap[o].rc, mid + 1, r, ind);
}
}
int insert(int o, int ind) {
insert(o, 0, n - 1, ind);
return o;
}
void update_clear(int& o, int l, int r, int ql) {
if (!o) {
return;
} else if (ql <= l) {
o = 0;
return;
}
alloc(o);
int mid = (l + r) / 2;
update_clear(heap[o].rc, mid + 1, r, ql);
if (ql <= mid) {
update_clear(heap[o].lc, l, mid, ql);
}
if (!heap[o].lc && !heap[o].rc) {
o = 0;
return;
}
}
int update_clear(int o, int ql) {
update_clear(o, 0, n - 1, ql);
return o;
}
int query(int o, int l, int r, int qr) {
if (!o) {
return -1;
} else if (l == r) {
return l;
}
int mid = (l + r) / 2;
if (mid + 1 < qr) {
int ans = query(heap[o].rc, mid + 1, r, qr);
if (ans != -1) {
return ans;
}
}
return query(heap[o].lc, l, mid, qr);
}
int query(int o, int qr) {
return query(o, 0, n - 1, qr);
}
// vector<vector<int>> dss;
//
// int insert(int o, int ind) {
// dss.push_back(dss[o]);
// dss.back()[ind] = ind;
//
// return sz(dss) - 1;
// }
//
// int update_clear(int o, int ql) {
// dss.push_back(dss[o]);
// fill(dss.back().begin() + ql, dss.back().end(), -1);
//
// return sz(dss) - 1;
// }
//
// int query(int o, int qr) {
// for (int i = qr - 1; i >= 0; i--) {
// if (dss[o][i] != -1) {
// return dss[o][i];
// }
// }
//
// return -1;
// }
void solve() {
cin >> n;
int arr[n];
for (auto& a : arr) {
cin >> a;
a = -a;
}
vector<pair<int, int>> comp;
for (int i = 0; i < n; i++) {
comp.emplace_back(max(0, arr[i]), i);
}
sort(begin(comp), end(comp));
int ds = 0;
vector<int> h_ds;
for (int i = 0; i < n; i++) {
h_ds.push_back(ds);
int ds_ind = q_lb(comp, {max(0, arr[i]), i}),
targ = query(ds, q_lb(comp, {arr[i], -1}));
ds = targ == -1 ? 0 : h_ds[comp[targ].second];
ds = update_clear(ds, q_lb(comp, {arr[i], -1}));
ds = insert(ds, ds_ind);
// dbg(ds, ds_ind, targ, dss[ds][1], dss[ds][0]);
int ans = query(ds, q_lb(comp, {1, -1}));
if (ans == -1) {
cout << 0 << endl;
} else {
cout << -arr[comp[ans].second] << endl;
}
}
}
int main() {
cin.tie(nullptr);
cin.exceptions(ios::failbit);
ios_base::sync_with_stdio(false);
solve();
}
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