oj.uz

Submission #1111676

# Submission time Handle Problem Language Result Execution time Memory
1111676 2024-11-12T15:01:09 Z noyancanturk Abracadabra (CEOI22_abracadabra) C++17
100 / 100
 1034 ms 47028 KB 
#include<bits/stdc++.h>
using namespace std;
#define pb push_back
using pii=pair<int,int>;
struct query{
  int t,i,ind;
};

struct Node{
  int val,maxi,sz,pri;
  Node*l,*r;
  Node(int val):val(val),maxi(val),sz(1),pri(rand()),l(0),r(0){}
};

using pnode=Node*;

int getcnt(pnode p){
  if(p)return p->sz;
  return 0;
}
int getval(pnode p){
  if(p)return p->maxi;
  return 0;
}
void upd(pnode p){
  if(p){
    p->sz=getcnt(p->l)+getcnt(p->r)+1;
    p->maxi=p->val;
    if(p->l)p->maxi=max(p->maxi,p->l->maxi);
    if(p->r)p->maxi=max(p->maxi,p->r->maxi);
  }
}

void merge(pnode&p,pnode l,pnode r){
  if(!l){
    p=r;
    return;
  }
  if(!r){
    p=l;
    return;
  }
  if(l->pri<r->pri){
    merge(r->l,l,r->l);
    p=r;
  }else{
    merge(l->r,l->r,r);
    p=l;
  }
  upd(p);
}

void splitind(pnode p,pnode&l,pnode&r,int ind){
  if(!p){
    l=r=0;
    return;
  }
  if(getcnt(p->l)+1<ind){
    splitind(p->r,p->r,r,ind-getcnt(p->l)-1);
    l=p;
  }else{
    splitind(p->l,l,p->l,ind);
    r=p;
  }
  upd(p);
}

void split(pnode p,pnode&l,pnode&r,int val){
  if(!p){
    l=r=0;
    return;
  }
  if(max(p->val,getval(p->l))<=val){
    split(p->r,p->r,r,val);
    l=p;
  }else{
    split(p->l,l,p->l,val);
    r=p;
  }
  upd(p);
}

int find(pnode p,int ind){
  if(ind==getcnt(p->l)+1)return p->val;
  if(ind<getcnt(p->l)+1)return find(p->l,ind);
  return find(p->r,ind-getcnt(p->l)-1);
}
int beg(pnode p){
  if(p->l)return beg(p->l);
  return p->val;
}
pnode last(pnode p){
  if(p->r)return last(p->r);
  return p;
}

void walk(pnode p){
  if(!p)return;
  walk(p->l);
  //cerr<<p->val<<' ';
  walk(p->r);
}

int main(){
  #ifdef Local
  freopen(".in","r",stdin);
  freopen(".out","w",stdout);
  #endif
  int n,m;
  cin>>n>>m;
  int a[n];
  pnode t1=0,t2=0;
  for(int i=0;i<n;i++){
    cin>>a[i];
    if(i<n/2)merge(t1,t1,new Node(a[i]));
    else merge(t2,t2,new Node(a[i]));
  }
  query q[m];
  for(int i=0;i<m;i++){
    cin>>q[i].t>>q[i].i;
    q[i].ind=i;
  }
  sort(q,q+m,[&](query x,query y)->bool {
    return x.t<y.t;
  });
  bool done=0;
  int turn=0;
  int ans[m];
  for(int i=0;i<m;i++){
    while(turn<q[i].t&&!done){
      done=1;
      turn++;
      bool cont;
      //cerr<<"begin\n";
      do{
        cont=0;
      //cerr<<"begin again\n";
        int val=beg(t2);
        //cerr<<"found\n";
        pnode p1=0,p2=0;
        split(t1,p1,p2,val);
        if(p2!=0){
          cont=1;
          done=0;
          pnode p3=0;
        //cerr<<"sp beg\n";
          split(t2,p3,t2,val);
          merge(t1,p1,p3);
          merge(t1,t1,p2);
        //cerr<<"sp end\n";
        }
        //cerr<<"here\n";
      }while(cont&&getcnt(t2));
      //cerr<<"end\n";
      while(n/2<getcnt(t1)){
        pnode p=0;
        splitind(t1,t1,p,n/2+1);
        merge(t2,p,t2);
      }
      //cerr<<"check\n";
    }
    //walk(t1);cerr<<'\n';walk(t2);
    //cerr<<'\n';
    if(q[i].i<=n/2){
      ans[q[i].ind]=find(t1,q[i].i);
    }else{
      //cerr<<q[i].i-n/2<<" huh\n";
      ans[q[i].ind]=find(t2,q[i].i-n/2);
    }
  //cerr<<"ok\n";
  //cerr<<ans[q[i].ind]<<'\n';
  }
  for(int i:ans)cout<<i<<'\n';
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 430 ms 27720 KB Output is correct
2 Correct 396 ms 27564 KB Output is correct
3 Correct 389 ms 26440 KB Output is correct
4 Correct 349 ms 25160 KB Output is correct
5 Correct 380 ms 26952 KB Output is correct
6 Correct 352 ms 25416 KB Output is correct
7 Correct 401 ms 27208 KB Output is correct
8 Correct 377 ms 25672 KB Output is correct
9 Correct 377 ms 25416 KB Output is correct
10 Correct 352 ms 25780 KB Output is correct
11 Correct 380 ms 25672 KB Output is correct
12 Correct 331 ms 24648 KB Output is correct
13 Correct 350 ms 25416 KB Output is correct
14 Correct 386 ms 26160 KB Output is correct
15 Correct 381 ms 26184 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 332 ms 24988 KB Output is correct
18 Correct 333 ms 24776 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 670 ms 47028 KB Output is correct
2 Correct 564 ms 46316 KB Output is correct
3 Correct 465 ms 38040 KB Output is correct
4 Correct 455 ms 38196 KB Output is correct
5 Correct 482 ms 39240 KB Output is correct
6 Correct 464 ms 37664 KB Output is correct
7 Correct 589 ms 45764 KB Output is correct
8 Correct 536 ms 43848 KB Output is correct
9 Correct 485 ms 38812 KB Output is correct
10 Correct 543 ms 42824 KB Output is correct
11 Correct 394 ms 37192 KB Output is correct
12 Correct 412 ms 36860 KB Output is correct
13 Correct 515 ms 42148 KB Output is correct
14 Correct 459 ms 38076 KB Output is correct
15 Correct 500 ms 43848 KB Output is correct
16 Correct 61 ms 11568 KB Output is correct
17 Correct 435 ms 40432 KB Output is correct
18 Correct 353 ms 34632 KB Output is correct
19 Correct 152 ms 17388 KB Output is correct
20 Correct 189 ms 18760 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 187 ms 9288 KB Output is correct
2 Correct 119 ms 9232 KB Output is correct
3 Correct 147 ms 9032 KB Output is correct
4 Correct 129 ms 9032 KB Output is correct
5 Correct 142 ms 9288 KB Output is correct
6 Correct 125 ms 8776 KB Output is correct
7 Correct 126 ms 9128 KB Output is correct
8 Correct 128 ms 8940 KB Output is correct
9 Correct 136 ms 9032 KB Output is correct
10 Correct 96 ms 8716 KB Output is correct
11 Correct 93 ms 8864 KB Output is correct
12 Correct 92 ms 8644 KB Output is correct
13 Correct 94 ms 8892 KB Output is correct
14 Correct 103 ms 9032 KB Output is correct
15 Correct 91 ms 8776 KB Output is correct
16 Correct 30 ms 5804 KB Output is correct
17 Correct 84 ms 8520 KB Output is correct
18 Correct 91 ms 8492 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 430 ms 27720 KB Output is correct
2 Correct 396 ms 27564 KB Output is correct
3 Correct 389 ms 26440 KB Output is correct
4 Correct 349 ms 25160 KB Output is correct
5 Correct 380 ms 26952 KB Output is correct
6 Correct 352 ms 25416 KB Output is correct
7 Correct 401 ms 27208 KB Output is correct
8 Correct 377 ms 25672 KB Output is correct
9 Correct 377 ms 25416 KB Output is correct
10 Correct 352 ms 25780 KB Output is correct
11 Correct 380 ms 25672 KB Output is correct
12 Correct 331 ms 24648 KB Output is correct
13 Correct 350 ms 25416 KB Output is correct
14 Correct 386 ms 26160 KB Output is correct
15 Correct 381 ms 26184 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 332 ms 24988 KB Output is correct
18 Correct 333 ms 24776 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 670 ms 47028 KB Output is correct
22 Correct 564 ms 46316 KB Output is correct
23 Correct 465 ms 38040 KB Output is correct
24 Correct 455 ms 38196 KB Output is correct
25 Correct 482 ms 39240 KB Output is correct
26 Correct 464 ms 37664 KB Output is correct
27 Correct 589 ms 45764 KB Output is correct
28 Correct 536 ms 43848 KB Output is correct
29 Correct 485 ms 38812 KB Output is correct
30 Correct 543 ms 42824 KB Output is correct
31 Correct 394 ms 37192 KB Output is correct
32 Correct 412 ms 36860 KB Output is correct
33 Correct 515 ms 42148 KB Output is correct
34 Correct 459 ms 38076 KB Output is correct
35 Correct 500 ms 43848 KB Output is correct
36 Correct 61 ms 11568 KB Output is correct
37 Correct 435 ms 40432 KB Output is correct
38 Correct 353 ms 34632 KB Output is correct
39 Correct 152 ms 17388 KB Output is correct
40 Correct 189 ms 18760 KB Output is correct
41 Correct 187 ms 9288 KB Output is correct
42 Correct 119 ms 9232 KB Output is correct
43 Correct 147 ms 9032 KB Output is correct
44 Correct 129 ms 9032 KB Output is correct
45 Correct 142 ms 9288 KB Output is correct
46 Correct 125 ms 8776 KB Output is correct
47 Correct 126 ms 9128 KB Output is correct
48 Correct 128 ms 8940 KB Output is correct
49 Correct 136 ms 9032 KB Output is correct
50 Correct 96 ms 8716 KB Output is correct
51 Correct 93 ms 8864 KB Output is correct
52 Correct 92 ms 8644 KB Output is correct
53 Correct 94 ms 8892 KB Output is correct
54 Correct 103 ms 9032 KB Output is correct
55 Correct 91 ms 8776 KB Output is correct
56 Correct 30 ms 5804 KB Output is correct
57 Correct 84 ms 8520 KB Output is correct
58 Correct 91 ms 8492 KB Output is correct
59 Correct 1 ms 336 KB Output is correct
60 Correct 1 ms 336 KB Output is correct
61 Correct 1034 ms 46408 KB Output is correct
62 Correct 924 ms 45912 KB Output is correct
63 Correct 944 ms 44104 KB Output is correct
64 Correct 841 ms 44092 KB Output is correct
65 Correct 1018 ms 45688 KB Output is correct
66 Correct 891 ms 43852 KB Output is correct
67 Correct 880 ms 45384 KB Output is correct
68 Correct 885 ms 43480 KB Output is correct
69 Correct 909 ms 43848 KB Output is correct
70 Correct 805 ms 43276 KB Output is correct
71 Correct 768 ms 42732 KB Output is correct
72 Correct 831 ms 42864 KB Output is correct
73 Correct 842 ms 42824 KB Output is correct
74 Correct 848 ms 44144 KB Output is correct
75 Correct 826 ms 44228 KB Output is correct
76 Correct 68 ms 11592 KB Output is correct
77 Correct 682 ms 40612 KB Output is correct
78 Correct 673 ms 40592 KB Output is correct
79 Correct 1 ms 336 KB Output is correct
80 Correct 1 ms 336 KB Output is correct