#include <bits/stdc++.h>
#include "wall.h"
#define ll long long
#define MAXN 2000005
#define ff first
#define ss second
#define INF 999999999
using namespace std;
int l[3*MAXN],r[3*MAXN],xl,xr,xi;
pair <int,int> st[3*MAXN],cp;
void buil(int i){
st[i]={0,INF};
if (l[i]==r[i]) return;
l[i*2]=l[i] r[i*2]=(l[i]+r[i])/2;
l[i*2+1]=r[i*2]+1; r[i*2+1]=r[i];
buil(i*2); buil(i*2+1);
}
pair<int,int> cramb(pair<int,int> p1, pair<int,int> p2){
pair<int,int> tp;
tp={max(p1.ff,p2.ff),min(p1.ss,p2.ss)};
if (tp.ff<=tp.ss) return tp;
if (p2.ff>p1.ss) return {p2.ff,p2.ff};
else return {p2.ss,p2.ss};
}
void add(int i){
if (l[i]>xr || r[i]<xl) return;
if (l[i]>=xl && r[i]<=xr){
st[i]=cramb(st[i],cp);
return;
}
st[i*2]=cramb(st[i*2],st[i]);
st[i*2+1]=cramb(st[i*2+1],st[i]);
st[i]={0,INF};
add(i*2); add(i*2+1);
}
int ret(int i){
if (l[i]==r[i]){
return cramb({0,0},st[i]).ff;
}
int tret;
if (xi<=r[i*2]) tret=ret(i*2);
else tret=ret(i*2+1);
return cramb({tret,tret},st[i]).ff;
}
void buildWall(int n, int k, int op[], int left[], int right[],int height[], int finalHeight[]){
l[1]=0,r[1]=n-1;
buil(1);
for (int i=0; i<k; i++){
xl=left[i],xr=right[i];
if (op[i]==1) cp={height[i],INF};
else cp={0,height[i]};
add(1);
}
for (int i=0; i<n; i++){
xi=i;
finalHeight[i]=ret(1);
}
}
Compilation message
wall.cpp: In function 'void buil(int)':
wall.cpp:14:17: error: expected ';' before 'r'
l[i*2]=l[i] r[i*2]=(l[i]+r[i])/2;
^
