Submission #1111909

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111909		epicci23	Mechanical Doll (IOI18_doll)	C++17	2 / 100	283 ms	262144 KiB

doll

#include "bits/stdc++.h"
#include "doll.h"
//#define int long long
#define all(v) v.begin() , v.end()
#define sz(a) (int)a.size()
using namespace std;

vector<int> x,y,state,hm;
int p=0,p2=0;

void give_index(int rt,int l,int r){
  if(rt==-1){
    while(1){}
    return;
  }
  if(l==r) return;
  x[rt] = ++p;
  y[rt] = ++p;
  int mid = (l+r)/2;
  give_index(x[rt],l,mid),give_index(y[rt],mid+1,r);
}

void give_index2(int rt,int l,int r){
  if(rt==-1){
    while(1){}
    return;
  }
  if(l==r) return;
  int mid = (l+r)/2;
  give_index2(x[rt],l,mid),give_index2(y[rt],mid+1,r);
  x[rt] *= -1;
  y[rt] *= -1;
}

void make_leaf(int rt){
  if(rt==-1){
    while(1){}
    return;
  }
  if(state[rt]==0){
    if(x[rt]==-1) x[rt]=hm[p2++];
    else make_leaf(x[rt]);
  }
  else{
    if(y[rt]==-1) y[rt]=hm[p2++];
    else make_leaf(y[rt]);
  }
  state[rt]^=1;
}

void create_circuit(int m, vector<int> a){
  int n = sz(a);
  vector<int> c(m+1);
  vector<int> adj[m+5];

  for(int i=0;i<n;i++){
    if(i==0) adj[0].push_back(a[i]);
    else adj[a[i-1]].push_back(a[i]);
  }
  adj[a.back()].push_back(0);

  for(int i=0;i<=m;i++){
    if(sz(adj[i])==0) c[i]=i;
    else if(sz(adj[i])==1) c[i]=adj[i][0];
    else{
      int xd = sz(adj[i]);
      int leaf=1;
      while(leaf<xd) leaf<<=1;
      int nd = leaf - 1;
      for(int j=0;j<nd;j++){
        x.push_back(-1);
        y.push_back(-1);
        state.push_back(0);
      }

      c[i] = ++p;
      give_index(c[i],1,leaf/2);

      p2=0;
      hm=adj[i];
      for(int j=0;j<xd;j++) make_leaf(c[i]);

      give_index2(c[i],1,leaf/2);
      c[i]*=-1;
    }
  }

  answer(c, x, y);
}

• Subtask 1: 2 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56