Järjestys

input/code.cpp: In function 'int main()':
input/code.cpp:9:19: warning: unused variable 'c' [-Wunused-variable]
   int b = 0; char c;
                   ^

#include <iostream>
#include <vector>
using namespace std;

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int length; string numberinput; int number = 0;
  int b = 0; char c;
  cin >> length;
  int sijainnit[length + 1];
  cin.ignore();
  getline(cin, numberinput);
  numberinput += " ";
  for (int i = 0; i < length; i++) {
    while (true) {
      char c = numberinput.at(b);
      b++;
      if (c != ' ') {
        number *= 10;
        number += (int) c - '0';
      }
      else {
        sijainnit[number] = i;
        number = 0;
        break;
      }
    }
  }

  vector<int> kaannot; int maara = (length - 1) * 2;
  for (int i = length; i > 0; i--) {
    int kohta = sijainnit[i] + 1;
    for (int kaanto : kaannot) {
      if (kohta <= kaanto) {
        kohta = kaanto - kohta + 1;
      }
    }
    if (kohta == i) {
      maara -= 2;
      continue;
    }

    kaannot.push_back(kohta);
    kaannot.push_back(i);
  }
  cout << maara << "\n";
  for (int i = 0; i < maara; i++) {
    cout << kaannot[i] << " ";
  }
  cout << "\n";
}

Test 1

Group: 1

Verdict: WRONG ANSWER

Test 2

Group: 2

Verdict: WRONG ANSWER

Test 3

Group: 3

Verdict: TIME LIMIT EXCEEDED