Submission #422048

# Submission time Handle Problem Language Result Execution time Memory
422048 2021-06-09T16:05:51 Z kai824 Food Court (JOI21_foodcourt) C++17
21 / 100
743 ms 82200 KB
#include<bits/stdc++.h>
using namespace std;

#define int long long

struct node{
  node *l,*r;
  int s,e,ad=0,rm=0,rmd=0;//rmd: removed...
  node(int ss,int ee){
    s=ss;e=ee;
    if(s==e){
      l=r=NULL;
    }else{
      l=new node(s,(s+e)/2);
      r=new node((s+e)/2+1,e);
    }
  }
  void prop(){
    if(l){
      l->update(s,e,rm);
      l->update(s,e,ad);
      l->rmd+=rmd;
    }
    if(r){
      r->update(s,e,rm);
      r->update(s,e,ad);
      r->rmd+=rmd;
    }
    rm=ad=rmd=0;
  }
  void update(int a,int b,int c){
    if(a<=s && e<=b){
      if(c<0)rmd+=min(ad,-c);
      ad+=c;
      if(ad<0){
        rm+=ad;ad=0;
      }
      return;
    }
    prop();
    if(a<=(s+e)/2)l->update(a,b,c);
    if((s+e)/2<b)r->update(a,b,c);
  }
  int query(int p,int mn){//query for rmd...
    if(s==e){
      if(ad<mn)return -1;
      return rmd;
    }
    prop();
    if(p<=(s+e)/2)return l->query(p,mn);
    else return r->query(p,mn);
  }
} *root;

const int inf=LLONG_MAX;
#define eb emplace_back
#define mp make_pair
#define f first
#define s second
#define pii pair<int,int>

int ans[250005],nex=0;
struct node2{
  node2 *l,*r;
  int s,e,mm=inf;//mm stores which query is the nearest to being answered...
  int val=0;//similar to previous segtree
  vector<pii> vv;//value, answer it
  node2(int ss,int ee){
    s=ss;e=ee;
    if(s==e){
      l=r=NULL;
    }else{
      l=new node2(s,(s+e)/2);
      r=new node2((s+e)/2+1,e);
    }
  }
  void rev(){
    if(l)l->rev();if(r)r->rev();
    if(vv.size()>0)sort(vv.begin(),vv.end(),greater<pii>() );//smallest cross value behind...
  }
  void add(int p,int v,int it){//shop p, cross value v, update answer it...
    if(s==e){
      vv.eb(v,it);
      mm=min(mm,v-val);
      return;
    }
    if(p<=(s+e)/2)l->add(p,v,it);
    else r->add(p,v,it);

    mm=min(l->mm,r->mm);
  }
  void join(int a,int b,int cnt,int typ){
    if(a<=s && e<=b && cnt<mm){
      val+=cnt;
      mm-=cnt;
      return;
    }else if(s==e){
      val+=cnt;
      while(vv.size()>0 && val>=vv.back().f){
        ans[vv.back().s]=typ;
        vv.pop_back();
      }
      mm=inf;
      if(vv.size()>0)mm=vv.back().f-val;
      return;
    }
    //prop: since it was left to lazy, nothing should happen...
    l->join(s,e,val,-1);
    r->join(s,e,val,-1);
    val=0;

    if(a<=(s+e)/2)l->join(a,b,cnt,typ);
    if((s+e)/2<b)r->join(a,b,cnt,typ);

    mm=min(l->mm,r->mm);
  }
} *r2;

vector<pair<pii,pii> > mm;
int32_t main(){
  ios_base::sync_with_stdio(false);cin.tie(0);
  int n,m,q;
  cin>>n>>m>>q;
  root=new node(1,n);
  r2=new node2(1,n);

  int a,b,c,d,e;
  while(q--){
    cin>>a;
    if(a==1){//people join the queue...
      cin>>b>>c>>d>>e;
      mm.eb(mp(b,c),mp(e,d));//range b to c, e customers, type d

      root->update(b,c,e);
    }else if(a==2){//people leave the queue...
      cin>>b>>c>>d;
      root->update(b,c,-d);
    }else{
      cin>>b>>c;//query shop b, cth customer...
      e=root->query(b,c);
      //cout<<"DEBUG"<<e<<'\n';
      if(e==-1)nex++;
      else{
        ans[nex++]=1;
        //c+=e;
        //r2->add(b,c,nex++);
      }
    }
  }
  /*r2->rev();
  for(auto x:mm){
    r2->join(x.f.f,x.f.s,x.s.f,x.s.s);
  }*/

  for(int i=0;i<nex;i++){
    cout<<ans[i]<<'\n';
  }
  return 0;
}
/*
3 5 7
1 2 3 5 2
1 1 2 2 4
3 2 3
2 1 3 3
3 1 2
1 2 3 4 2
3 3 2
*/

Compilation message

foodcourt.cpp: In member function 'void node2::rev()':
foodcourt.cpp:78:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   78 |     if(l)l->rev();if(r)r->rev();
      |     ^~
foodcourt.cpp:78:19: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   78 |     if(l)l->rev();if(r)r->rev();
      |                   ^~
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 106 ms 19728 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 593 ms 68192 KB Output is correct
2 Correct 456 ms 57688 KB Output is correct
3 Correct 683 ms 75428 KB Output is correct
4 Correct 520 ms 77796 KB Output is correct
5 Correct 530 ms 60604 KB Output is correct
6 Correct 692 ms 79436 KB Output is correct
7 Correct 105 ms 8516 KB Output is correct
8 Correct 111 ms 8516 KB Output is correct
9 Correct 644 ms 80040 KB Output is correct
10 Correct 613 ms 79952 KB Output is correct
11 Correct 672 ms 78572 KB Output is correct
12 Correct 702 ms 78632 KB Output is correct
13 Correct 689 ms 78556 KB Output is correct
14 Correct 681 ms 78880 KB Output is correct
15 Correct 661 ms 79024 KB Output is correct
16 Correct 705 ms 79008 KB Output is correct
17 Correct 694 ms 78960 KB Output is correct
18 Correct 713 ms 78504 KB Output is correct
19 Correct 743 ms 78604 KB Output is correct
20 Correct 727 ms 78904 KB Output is correct
21 Correct 690 ms 79060 KB Output is correct
22 Correct 674 ms 79092 KB Output is correct
23 Correct 687 ms 79304 KB Output is correct
24 Correct 699 ms 78832 KB Output is correct
25 Correct 500 ms 63276 KB Output is correct
26 Correct 563 ms 79520 KB Output is correct
27 Correct 552 ms 82200 KB Output is correct
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 105 ms 19552 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 716 KB Output isn't correct
2 Halted 0 ms 0 KB -