提出 #33497709

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ソースコード 拡げる

#include <iostream>
#include <cstdio>
#include <cstring>
#include <vector>
#include <algorithm>
#include <cmath>

using namespace std;

#define mp make_pair
#define pb push_back
#define ll long long

//#define debug(x) ;
#define debug(x) cerr << #x << " = " << x << "\n";

ostream& operator<<(ostream& cerr, vector<ll> aux) {
  cerr << "[";
  for (auto e : aux) cerr << e << ' ';
  cerr << "]";
  return cerr;
}

int n, k;

int main()
{
  cin >> n >> k;

  if (2 * k > n) {
    cout << -1;
    return 0;
  }

  int pos = 0;
  while (pos + 4 * k <= n) {
    for (int i = 1; i <= k; i++)
      cout << pos + k + i << ' ';

    for (int i = 1; i <= k; i++)
      cout << pos + i << ' ';

    pos += 2 * k;
  } 

  if (pos + 3 * k <= n) {
    for (int i = 1; i <= k; i++)
      cout << pos + k + i << ' ';

    int diff = n - pos - 3 * k;

    for (int i = 1; i <= diff; i++)
      cout << pos + i << ' ';

    for (int i = 1; i <= k; i++) 
      cout << n - k + i << ' ';

    for (int i = diff + 1; i <= k; i++)
      cout << pos + i << ' ';

    for (int i = 1; i <= diff; i++)
      cout << pos + 2 * k + i << ' ';

  } else {
    for (int i = k + 1; pos + i <= n; i++)
      cout << pos + i << ' ';

    for (int i = 1; i <= k; i++)
      cout << pos + i << ' ';
  }

  cout << '\n';

  return 0;
}

提出情報

ジャッジ結果