Submission #1038659

#	Time	Username	Problem	Language	Result	Execution time	Memory
1038659		huutuan	Mechanical Doll (IOI18_doll)	C++14	37 / 100	124 ms	45468 KiB

doll

#include "doll.h"

#include <bits/stdc++.h>

using namespace std;

const int N=1e6+10;
vector<int> g[N];
int n, m, sz, a[N];
vector<int> order, X, Y;

void build(int id){
   X[id-1]=-(id<<1);
   Y[id-1]=-(id<<1|1);
   g[id].push_back(id<<1);
   g[id].push_back(id<<1|1);
   if ((id<<1)>=sz) return;
   build(id<<1);
   build(id<<1|1);
}

void dfs(int id){
   if (g[id].empty()){
      order.push_back(id);
      return;
   }
   dfs(id<<1|a[id]);
   a[id]^=1;
}

void create_circuit(int M, std::vector<int> A) {
   n=A.size(), m=M;
   vector<int> C(M+1);
   C[0]=A[0];
   for (int i=1; i<=M; ++i) C[i]=-1;
   A.erase(A.begin());
   A.push_back(0);
   do{
      A.insert(A.end()-1, -1);
   }while (__builtin_popcount(A.size())!=1);
   sz=A.size();
   X.resize(sz-1);
   Y.resize(sz-1);
   build(1);
   for (int i=0; i<sz; ++i) dfs(1);
   for (int i=0; i<(int)A.size(); ++i){
      int id=order[i];
      if (id&1) Y[(id>>1)-1]=A[i];
      else X[(id>>1)-1]=A[i];
   }
   answer(C, X, Y);
}

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 9 / 18
• Subtask 6: 28 / 56