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 "wall.h"
#include <bits/stdc++.h>
using namespace std;
#define forn(i,n) for(int i=0;i<n;++i)
#define pb push_back
struct sgt {
vector<int> mx,mn; int sz=1;
vector<int> lazy;
vector<int> type;
void upd(int v, int t, int x) {
if (v>=2*sz-1) return;
if (t==3) {
type[v]=3;
lazy[v]=x;
return;
}
if (type[v]==0) {
type[v]=t;
lazy[v]=x;
return;
}
if (type[v]==1) {
if (t==1) {
lazy[v]=max(lazy[v],x);
return;
}
if (x <= lazy[v]) {
type[v]=3;
lazy[v]=x;
} else {
mn[v]=max(mn[v],lazy[v]);
mx[v]=max(mx[v],lazy[v]);
upd(2*v+1,type[v],lazy[v]);
upd(2*v+2,type[v],lazy[v]);
type[v]=2;
lazy[v]=x;
}
return;
}
if (type[v]==2) {
if (t==2) {
lazy[v]=min(lazy[v],x);
return;
}
if (x >= lazy[v]) {
type[v]=3;
lazy[v]=x;
} else {
mx[v]=min(mx[v],lazy[v]);
mn[v]=min(mn[v],lazy[v]);
upd(2*v+1,type[v],lazy[v]);
upd(2*v+2,type[v],lazy[v]);
type[v]=1;
lazy[v]=x;
}
return;
}
if (type[v]==3) {
if (t==1) {
lazy[v]=max(lazy[v],x);
} else {
lazy[v]=min(lazy[v],x);
}
}
}
void push(int v) {
upd(2*v+1,type[v],lazy[v]);
upd(2*v+2,type[v],lazy[v]);
if (type[v]==1) {
mn[v]=max(mn[v],lazy[v]);
mx[v]=max(mx[v],lazy[v]);
} else if (type[v]==2) {
mx[v]=min(mx[v],lazy[v]);
mn[v]=min(mn[v],lazy[v]);
} else {
mn[v]=mx[v]=lazy[v];
}
type[v]=0;
lazy[v]=0;
}
sgt(int n) {
while (sz<n) sz<<=1;
mx.assign(4*sz,0);
mn=lazy=type=mx;
}
void setmax(int v, int l, int r, int lx, int rx, int x) {
if (type[v]) push(v);
if (mn[v]>=x) return;
if (rx<=l || r<=lx) return;
if (lx<=l && r<=rx) {
upd(v,1,x);
push(v);
return;
}
int m=(l+r)>>1;
setmax(2*v+1,l,m,lx,rx,x);
setmax(2*v+2,m,r,lx,rx,x);
mx[v]=max(mx[2*v+1],mx[2*v+2]);
mn[v]=min(mn[2*v+1],mn[2*v+2]);
}
void setmax(int l, int r, int x) {
setmax(0,0,sz,l,r,x);
}
void setmin(int v, int l, int r, int lx, int rx, int x) {
if (type[v]) push(v);
if (mx[v]<=x) return;
if (rx<=l || r<=lx) return;
if (lx<=l && r<=rx) {
upd(v,2,x);
push(v);
return;
}
int m=(l+r)>>1;
setmin(2*v+1,l,m,lx,rx,x);
setmin(2*v+2,m,r,lx,rx,x);
mx[v]=max(mx[2*v+1],mx[2*v+2]);
mn[v]=min(mn[2*v+1],mn[2*v+2]);
}
void setmin(int l, int r, int x) {
setmin(0,0,sz,l,r,x);
}
void dfs(int v, int l, int r) {
if (type[v]) push(v);
if (r-l==1) return;
int m=(l+r)>>1;
dfs(2*v+1,l,m);
dfs(2*v+2,m,r);
}
void dfs() {
dfs(0,0,sz);
}
};
void buildWall(int n, int k, int t[], int l[], int r[], int a[], int ans[]) {
sgt st(n);
forn(i,k) {
if (t[i]==1) {
st.setmax(l[i],r[i]+1,a[i]);
} else {
st.setmin(l[i],r[i]+1,a[i]);
}
}
st.dfs();
forn(i,n) ans[i]=st.mn[st.sz-1+i];
}
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