#include "wall.h"
#include <bits/stdc++.h>
using namespace std;
#define X first
#define Y second
#define rep(i,a,b) for(int i=a;i<=b;i++)
#define IOS ios::sync_with_stdio(0);cin.tie(0);
#define de(x,y) cout<<#x<<" :"<<x<<y;
#define int long long
#define SZ(xx) ((int)xx.size())
#define lowbit(xx) (xx&(-xx))
#define pb push_back
#define ls node*2
#define rs node*2+1
typedef pair<int,int> pii;
const int maxn = 3e6+5;
const int INF = 1e9+5;
int mx[maxn * 4], mn[maxn * 4], tag[maxn * 4], ans[maxn];
void push(int node) {
if(mn[ls] != INF) {
mx[ls] = min(mx[ls], mn[ls]);
}
if(mn[rs] != INF) {
mx[rs] = min(mx[rs], mn[rs]);
}
if(tag[node]) {
tag[rs] = tag[ls] = 1;
mn[rs] = mn[ls] = INF;
}
mx[ls] = max(mx[ls], mx[node]);
mx[rs] = max(mx[rs], mx[node]);
mn[ls] = min(mn[ls], mn[node]);
mn[rs] = min(mn[rs], mn[node]);
mx[node] = 0;
mn[node] = INF;
tag[node] = 0;
}
void upd(int node,int l,int r,int a,int b,int type,int val) {
if(a <= l && r <= b) {
if(type == 1) {
if(mn[node] != INF)
mx[node] = min(mn[node], mx[node]);
tag[node] = 1;
mn[node] = INF;
mx[node] = max(mx[node], val);
}
else {
tag[node] = 0;
mn[node] = min(mn[node], val);
mx[node] = min(mx[node], mn[node]);
}
}
else {
push(node);
int m = (l + r) >> 1;
if(a <= m) upd(ls, l, m, a, b, type, val);
if(b > m) upd(rs, m+1, r, a, b, type, val);
}
}
void travel(int node,int l,int r) {
if(l == r) {
if(mn[node] != INF)
ans[l] = min(mn[node], mx[node]);
else
ans[l] = mx[node];
}
else {
push(node);
int m = (l + r) >> 1;
travel(ls, l, m);
travel(rs, m+1, r);
}
}
void print(int node,int l,int r) {
if(l == r) {
cout << l << " " << r << " " << mx[node] << " " << mn[node] << "\n";
}
else {
int m = (l + r) >> 1;
print(ls, l, m);
print(rs, m+1, r);
cout << l << " " << r << " " << mx[node] << " " << mn[node] << "\n";
}
}
void buildWall(int n,int k,int op[],int left[], int right[], int height[], int finalHeight[]) {
for(int i=1; i<=maxn * 2; i++) {
mx[i] = 0;
mn[i] = INF;
}
for(int i=0; i<k; i++) {
upd(1, 1, n, left[i]+1, right[i]+1, op[i], height[i]);
}
travel(1, 1, n);
for(int j=1; j<=n; j++) {
finalHeight[j-1] = ans[j];
}
}
Compilation message
/tmp/cckBmc1O.o: In function `main':
grader.cpp:(.text.startup+0x113): undefined reference to `buildWall(int, int, int*, int*, int*, int*, int*)'
collect2: error: ld returned 1 exit status
