Submission #1358657

#TimeUsernameProblemLanguageResultExecution timeMemory
1358657lyra_g13Prisoner Challenge (IOI22_prison)C++20
56 / 100
5 ms1092 KiB
#include "prison.h"
#include <bits/stdc++.h>
using ll = long long;
using namespace std;

std::vector<std::vector<int>> devise_strategy(int n) {

  vector<vector<int>> a(2 * 13 + 1, vector<int>(n + 1));

  ll bag = 0;
  for (int i = 1; i <= n; i++) {
    ll bbit = ((i & (1 << 12)) ? 1 : 0);
    a[0][i] = 1 + bbit;
  }
  for (int i = 1; i <= 2 * 13; i++) {
    ll c = (i + 1) / 2;
    ll num = (i - 1) % 2;
    ll bit = 13 - c;

    a[i][0] = (c % 2 == 0) ? 0 : 1;

    for (int j = 1; j <= n; j++) {
      ll bbit = ((j & (1 << bit)) ? 1 : 0);
      if (num < bbit) {
        if (c % 2 == 1) {
          a[i][j] = -1;
        } else {
          a[i][j] = -2;
        }
      } else if (num > bbit) {
        if (c % 2 == 1) {
          a[i][j] = -2;
        } else {
          a[i][j] = -1;
        }
      } else {
        if(bit == 0){
          a[i][j] = -1;
        }
        else{
        ll nbit = ((j & (1 << (bit - 1))) ? 1 : 0);
        a[i][j] = i + 2 - num + nbit;
        }
      }
    }
  }

  return a;
}
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