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/stdc++.h>
using namespace std;
#define endl '\n'
#define ll long long
#define all(x) x.begin(), x.end()
struct Node {
int mn = 0, mx = 0;
};
Node seg[2 * (1 << 21) + 20];
int ans[2000005];
void lz(int k) {
seg[k * 2].mn = min(seg[k * 2].mn, seg[k].mn);
seg[k * 2].mn = max(seg[k * 2].mn, seg[k].mx);
seg[k * 2].mx = min(seg[k * 2].mx, seg[k].mn);
seg[k * 2].mx = max(seg[k * 2].mx, seg[k].mx);
seg[k * 2 + 1].mn = min(seg[k * 2 + 1].mn, seg[k].mn);
seg[k * 2 + 1].mn = max(seg[k * 2 + 1].mn, seg[k].mx);
seg[k * 2 + 1].mx = min(seg[k * 2 + 1].mx, seg[k].mn);
seg[k * 2 + 1].mx = max(seg[k * 2 + 1].mx, seg[k].mx);
}
void update(int k, int l, int r, int i, int j, int v, int t) {
if (l > j || r < i) return;
if (i <= l && r <= j) {
if (t == 1) {
seg[k].mn = max(seg[k].mn, v);
seg[k].mx = max(seg[k].mx, v);
}
else {
seg[k].mn = min(seg[k].mn, v);
seg[k].mx = min(seg[k].mx, v);
}
return;
}
lz(k);
seg[k].mn = 2000010;
seg[k].mx = 0;
update(k * 2, l, (l + r) / 2, i, j, v, t);
update(k * 2 + 1, (l + r) / 2 + 1, r, i, j, v, t);
}
void get(int k, int l, int r) {
if (l == r) {
ans[l] = seg[k].mn;
return;
}
lz(k);
get(k * 2, l, (l + r) / 2);
get(k * 2 + 1, (l + r) / 2 + 1, r);
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]) {
for (int i = 0; i < k; i++) {
update(1, 0, n - 1, left[i], right[i], height[i], op[i]);
}
get(1, 0, n - 1);
for (int i = 0; i < n; i++) {
finalHeight[i] = ans[i];
}
}
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