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;
const int maxn = 1e6+5;
#define pii pair<int,int>
#define fi first
#define se second
int N,M,B,P,C[maxn];
struct Rec{
int x,y,u,v;
}R[maxn];
namespace B1{
int tree[4*maxn],lazy[4*maxn];
vector<int> pos[maxn];
void update(int l,int r,int id,int tl,int tr,int val){
if(tr<l || r<tl) return;
if(tl<=l && r<=tr){
tree[id]+=val;
lazy[id]+=val;
return;
}
int mid=(l+r)>>1;
update(l,mid,id<<1,tl,tr,val);update(mid+1,r,id<<1|1,tl,tr,val);
tree[id]=min(tree[id<<1],tree[id<<1|1])+lazy[id];
}
void solve(){
auto check = [&](int d){
for(int i=1;i<=N-d+1;i++) pos[i].clear();
for(int i=1;i<=4*(M-d+1);i++) tree[i]=lazy[i]=0;
for(int i=1;i<=P;i++){
int x=max(1,R[i].x-d+1),u=R[i].u;
pos[x].push_back(i);pos[u+1].push_back(i);
}
for(int i=1;i<=N-d+1;i++){
for(int id:pos[i]){
int l=max(1,R[id].y-d+1),r=R[id].v,c=C[id];
if(i==R[id].u+1) c=-c;
update(1,M-d+1,1,l,r,c);
}
//cout << i << ' ' << tree[1] << '\n';
if(tree[1]<=B) return true;
}
return false;
};
int l=1,r=min(N,M),res=0;
while(l<=r){
int mid=(l+r)>>1;
if(check(mid)) res=mid,l=mid+1;
else r=mid-1;
}
cout << res << '\n';
}
}
namespace B0{
vector<int> add[maxn],del[maxn];
struct node{
int val=0,sz=0,lt=0,rt=0,len=0;
node(int s=0){
sz=lt=rt=len=s;
}
friend node operator+(node a,node b){
node res;
res.len=a.len+b.len;
res.val=min(a.val,b.val);
if(a.val<b.val){
res.sz=a.sz;
res.lt=a.lt;
res.rt=0;
}
else if(a.val>b.val){
res.sz=b.sz;
res.rt=b.rt;
res.lt=0;
}
else{
res.sz=max({a.sz,b.sz,a.rt+b.lt});
res.lt=a.lt+(a.lt==a.len)*b.lt;
res.rt=b.rt+(b.rt==b.len)*a.rt;
}
return res;
}
}tree[4*maxn];
void build(int l,int r,int id){
tree[id]=node(r-l+1);
if(l==r) return;
int mid=(l+r)>>1;
build(l,mid,id<<1);build(mid+1,r,id<<1|1);
}
int lazy[4*maxn];
void update(int l,int r,int id,int tl,int tr,int val){
if(tr<l || r<tl) return;
if(tl<=l && r<=tr){
tree[id].val+=val;
lazy[id]+=val;
return;
}
int mid=(l+r)>>1;
update(l,mid,id<<1,tl,tr,val);update(mid+1,r,id<<1|1,tl,tr,val);
tree[id]=tree[id<<1]+tree[id<<1|1];
tree[id].val+=lazy[id];
}
void solve(){
for(int i=1;i<=P;i++){
add[R[i].x].push_back(i);
del[R[i].u].push_back(i);
}
int res=0;
build(1,M,1);
for(int i=1,j=0;i<=N;i++){
while(j<=N){
if((!tree[1].val)*tree[1].sz<j-i+1) break;
j++;
for(int id:add[j]) update(1,M,1,R[id].y,R[id].v,1);
}
res=max(res,j-i);
for(int id:del[i]) update(1,M,1,R[id].y,R[id].v,-1);
}
cout << res << '\n';
}
}
signed main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);cout.tie(NULL);
cin >> N >> M >> B >> P;
for(int i=1;i<=P;i++) cin >> R[i].x >> R[i].y >> R[i].u >> R[i].v >> C[i];
if(B) B1::solve();
else B0::solve();
}
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