Submission #21887

#	Time	Username	Problem	Language	Result	Execution time	Memory
21887		sampriti	Unscrambling a Messy Bug (IOI16_messy)	C++14	49 / 100	10 ms	384 KiB

messy

#include "messy.h"

#include <vector>
#include <string>
#include <algorithm>

using namespace std;

std::vector<int> restore_permutation(int N, int w, int r) {
  srand(time(0));
  vector<string> els;
  for(int i = 0; i < N; i++) {
    string str = "";
    for(int j = 0; j < N; j++) {
      if(j <= i) str += '1';
      else str += '0';
    }
    add_element(str);
    els.push_back(str);
  }
  compile_set();

  vector<int> P(N, -1);
  for(int i = 0; i < N; i++) {
    string curr = "";
    for(int j = 0; j < N; j++) {
      if(P[j] != -1) curr += '1';
      else curr += '0';
    }
    vector<int> indices;
    for(int j = 0; j < N; j++) {
      if(curr[j] == '0') indices.push_back(j);
    }
    random_shuffle(indices.begin(), indices.end());
    for(int ind = 0; ind < indices.size(); ind++) {
      int j = indices[ind];
      curr[j] = '1';
      if(ind == indices.size() - 1 || check_element(curr)) {
        P[j] = i;
        break;
      }
      curr[j] = '0';
    }
  }
  return P;
}

Compilation message (stderr)

messy.cpp: In function 'std::vector<int> restore_permutation(int, int, int)':
messy.cpp:35:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int ind = 0; ind < indices.size(); ind++) {
                      ~~~~^~~~~~~~~~~~~~~~
messy.cpp:38:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(ind == indices.size() - 1 || check_element(curr)) {
          ~~~~^~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 0 / 21
• Subtask 5: 0 / 30