Submission #414647

#	Time	Username	Problem	Language	Result	Execution time	Memory
414647		schse	Mechanical Doll (IOI18_doll)	C++17	37 / 100	148 ms	9000 KiB

doll

#include "doll.h"
#ifndef EVAL
#include "grader.cpp"
#endif
#include <bits/stdc++.h>
using namespace std;

vector<int> C, X, Y;
int mx = 2;
vector<bool> tree((1 << 18) + 5, true);

void rec(int index, int value)
{
  if (index >= mx / 2)
  {
    if (tree[index])
      X[index - 1] = value;
    else
      Y[index - 1] = value;
  }
  else if (tree[index])
    rec(index * 2, value);
  else
    rec(index * 2 + 1, value);
  tree[index] = !tree[index];
}

void create_circuit(int M, std::vector<int> A)
{
  int N = A.size();
  while (mx <= N)
    mx *= 2;

  X.resize(mx - 1);
  fill(X.begin(), X.end(), -1);
  Y = X;

  C.resize(M + 1);
  fill(C.begin(), C.end(), -1);

  for (int i = 1; i < mx / 2; i++)
  {
    X[i - 1] = i * -2;
    Y[i - 1] = i * -2 - 1;
  }
  for (int i : A)
    rec(1, i);
  Y[Y.size() - 1] = 0;
  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