Language: C++

#include <bits/stdc++.h>
#include <random>

using namespace std;

typedef unsigned long long ull;
typedef long long ll;
typedef double ld;
//#define ll __int128
//#define int ll
//#define int ll
//#define char ll
typedef vector<char> vc;
typedef vector<vc> vvc;
typedef vector<vvc> vvvc;
typedef pair<int, int> pii;
typedef pair<pii, pii> piii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vpi;
typedef vector< vi > vvi;
typedef vector< vvi > vvvi;
typedef vector<short> vs;
typedef vector<vs> vvs;
typedef vector<vvs> vvvs;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<vvl> vvvl;
typedef vector<ld> vld;
typedef vector<vld> vvld;
typedef vector<vvld> vvvld;
typedef vector<string> vst;
typedef vector<vst> vvst;
typedef pair<ld, ld> pld;

#define inmin(a, b) a = min(a, (b))
#define inmax(a, b) a = max(a, (b))
#define ALL(a) a.begin(),a.end()
#define RALL(a) a.rbegin(),a.rend()
#define sqr(x) ((x) * (x))
#define fori(i, n) for(int i = 0; i < int(n); ++i)
#define SZ(a) ((int)((a).size()))
#define triple(T) tuple<T, T, T>
#define quad(T) tuple<T, T, T, T>
#define watch(x) cerr << (#x) << " = " << (x) << endl;

#ifdef MAX_HOME
#define cerr cout
#else
#define cerr if (false) cerr
#endif

const double PI = 2 * acos(0.0);
#define rand shittttty_shit
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng_64(chrono::steady_clock::now().time_since_epoch().count());

const string DIGITS = "0123456789";
const string ALPH = "abcdefghijklmnopqrstuvwxyz";


template <class T0, class T1>
inline ostream & operator << (ostream &out, pair<T0, T1> &a) {
    return out << "{" << a.first << ", " << a.second << "}";
}

template <class T0, class T1>
inline istream & operator >> (istream &in, pair<T0, T1> &a) {
    return in >> a.first >> a.second;
}

template <class T0, class T1, class T2>
inline ostream & operator << (ostream &out, tuple<T0, T1, T2> &a) {
    return out << "{" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << "}";
}

template <class T0, class T1, class T2, class T3>
inline ostream & operator << (ostream &out, tuple<T0, T1, T2, T3> &a) {
    return out << "{" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << ", " <<  get<3>(a) << "}";
}

template<class T>
inline ostream & operator << (ostream &out, vector<T> &a) {
    out << "[";
    fori (i, a.size())
        out << a[i] << vector<string>{", ", "]  "}[i + 1 == a.size()];
    return out;
}


void smain();



signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
#ifdef MAX_HOME
    freopen("input.txt", "r", stdin);
    clock_t start = clock();
#endif
    cout << setprecision(4) << fixed;
    smain();
#ifdef MAX_HOME
    cout << "\n\n\n\nTOTAL EXECUTION TIME: " << float( clock () - start ) /  CLOCKS_PER_SEC << endl;
#endif
    return 0;
}


void smain() {
    int n;
    cin  >> n;
    n = 2 * n - 1;
    int mid = n >> 1;
    int x;
    cin >> x;
    if (x == n || x == 1 || (x == 2 && n != 3)) {
        cout << "No\n";
        return;
    }
    cout << "Yes\n";
    if (x == 2 && n == 3) {
        cout << "1 2 3\n";
        return;
    }
    vi a(n, -1);
    a[mid] = n;
    a[mid + 1] = x;
    a[mid - 1] = 1;
    a[mid - 2] = 2;
    int j = 3;
    fori (i, n) {
        if (a[i] == -1) {
            if (j == x)
                ++j;
            a[i] = j;
        }
    }
    for (auto x : a) {
        cout << x << ' ';
    }
}#include <bits/stdc++.h>
#include <random>

using namespace std;

typedef unsigned long long ull;
typedef long long ll;
typedef double ld;
//#define ll __int128
//#define int ll
//#define int ll
//#define char ll
typedef vector<char> vc;
typedef vector<vc> vvc;
typedef vector<vvc> vvvc;
typedef pair<int, int> pii;
typedef pair<pii, pii> piii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii> vpi;
typedef vector< vi > vvi;
typedef vector< vvi > vvvi;
typedef vector<short> vs;
typedef vector<vs> vvs;
typedef vector<vvs> vvvs;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<vvl> vvvl;
typedef vector<ld> vld;
typedef vector<vld> vvld;
typedef vector<vvld> vvvld;
typedef vector<string> vst;
typedef vector<vst> vvst;
typedef pair<ld, ld> pld;

#define inmin(a, b) a = min(a, (b))
#define inmax(a, b) a = max(a, (b))
#define ALL(a) a.begin(),a.end()
#define RALL(a) a.rbegin(),a.rend()
#define sqr(x) ((x) * (x))
#define fori(i, n) for(int i = 0; i < int(n); ++i)
#define SZ(a) ((int)((a).size()))
#define triple(T) tuple<T, T, T>
#define quad(T) tuple<T, T, T, T>
#define watch(x) cerr << (#x) << " = " << (x) << endl;

#ifdef MAX_HOME
#define cerr cout
#else
#define cerr if (false) cerr
#endif

const double PI = 2 * acos(0.0);
#define rand shittttty_shit
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng_64(chrono::steady_clock::now().time_since_epoch().count());

const string DIGITS = "0123456789";
const string ALPH = "abcdefghijklmnopqrstuvwxyz";


template <class T0, class T1>
inline ostream & operator << (ostream &out, pair<T0, T1> &a) {
    return out << "{" << a.first << ", " << a.second << "}";
}

template <class T0, class T1>
inline istream & operator >> (istream &in, pair<T0, T1> &a) {
    return in >> a.first >> a.second;
}

template <class T0, class T1, class T2>
inline ostream & operator << (ostream &out, tuple<T0, T1, T2> &a) {
    return out << "{" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << "}";
}

template <class T0, class T1, class T2, class T3>
inline ostream & operator << (ostream &out, tuple<T0, T1, T2, T3> &a) {
    return out << "{" << get<0>(a) << ", " << get<1>(a) << ", " << get<2>(a) << ", " <<  get<3>(a) << "}";
}

template<class T>
inline ostream & operator << (ostream &out, vector<T> &a) {
    out << "[";
    fori (i, a.size())
        out << a[i] << vector<string>{", ", "]  "}[i + 1 == a.size()];
    return out;
}


void smain();



signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
#ifdef MAX_HOME
    freopen("input.txt", "r", stdin);
    clock_t start = clock();
#endif
    cout << setprecision(4) << fixed;
    smain();
#ifdef MAX_HOME
    cout << "\n\n\n\nTOTAL EXECUTION TIME: " << float( clock () - start ) /  CLOCKS_PER_SEC << endl;
#endif
    return 0;
}


void smain() {
    int n;
    cin  >> n;
    n = 2 * n - 1;
    int mid = n >> 1;
    int x;
    cin >> x;
    if (x == n || x == 1 || (x == 2 && n != 3)) {
        cout << "No\n";
        return;
    }
    cout << "Yes\n";
    if (x == 2 && n == 3) {
        cout << "1 2 3\n";
        return;
    }
    vi a(n, -1);
    a[mid] = n;
    a[mid + 1] = x;
    a[mid - 1] = 1;
    a[mid - 2] = 2;
    int j = 3;
    fori (i, n) {
        if (a[i] == -1) {
            if (j == x)
                ++j;
            a[i] = j;
        }
    }
    for (auto x : a) {
        cout << x << ' ';
    }
}

Compiler output:
a.cc:143:2: error: stray '#' in program
  143 | }#include <bits/stdc++.h>
      |  ^
a.cc:143:3: error: 'include' does not name a type
  143 | }#include <bits/stdc++.h>
      |   ^~~~~~~
a.cc:195:14: error: redefinition of 'const double PI'
  195 | const double PI = 2 * acos(0.0);
      |              ^~
a.cc:53:14: note: 'const double PI' previously defined here
   53 | const double PI = 2 * acos(0.0);
      |              ^~
a.cc:197:9: error: redefinition of 'std::mt19937 rng'
  197 | mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
      |         ^~~
a.cc:55:9: note: 'std::mt19937 rng' previously declared here
   55 | mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
      |         ^~~
a.cc:198:12: error: redefinition of 'std::mt19937_64 rng_64'
  198 | mt19937_64 rng_64(chrono::steady_clock::now().time_since_epoch().count());
      |            ^~~~~~
a.cc:56:12: note: 'std::mt19937_64 rng_64' previously declared here
   56 | mt19937_64 rng_64(chrono::steady_clock::now().time_since_epoch().count());
      |            ^~~~~~
a.cc:200:14: error: redefinition of 'const std::string DIGITS'
  200 | const string DIGITS = "0123456789";
      |              ^~~~~~
a.cc:58:14: note: 'const std::string DIGITS' previously declared here
   58 | const string DIGITS = "0123456789";
      |              ^~~~~~
a.cc:201:14: error: redefinition of 'const std::string ALPH'
  201 | const string ALPH = "abcdefghijklmnopqrstuvwxyz";
      |              ^~~~
a.cc:59:14: note: 'const std::string ALPH' previously declared here
   59 | const string ALPH = "abcdefghijklmnopqrstuvwxyz";
      |              ^~~~
a.cc:205:18: error: redefinition of 'template<class T0, class T1> std::ostream& operator<<(std::ostream&, std::pair<_T1, _T2>&)'
  205 | inline ostream & operator << (ostream &out, pair<T0, T1> &a) {
      |                  ^~~~~~~~
a.cc:63:18: note: 'template<class T0, class T1> std::ostream& operator<<(std::ostream&, std::pair<_T1, _T2>&)' previously declared here
   63 | inline ostream & operator << (ostream &out, pair<T0, T1> &a) {
      |                  ^~~~~~~~
a.cc:210:18: error: redefinition of 'template<class T0, class T1> std::istream& operator>>(std::istream&, std::pair<_T1, _T2>&)'
  210 | inline istream & operator >> (istream &in, pair<T0, T1> &a) {
      |                  ^~~~~~~~
a.cc:68:18: note: 'template<class T0, class T1> std::istream& operator>>(std::istream&, std::pair<_T1, _T2>&)' previously declared here
   68 | inline istream & operator >> (istream &in, pair<T0, T1> &a) {
      |                  ^~~~~~~~
a.cc:215:18: error: redefinition of 'template<class T0, class T1, class T2> std::ostream& operator<<(std::ostream&, std::tuple<T0, T1, T2>&)'
  215 | inline ostream & operator << (ostream &out, tuple<T0, T1, T2> &a) {
      |                  ^~~~~~~~
a.cc:73:18: note: 'template<class T0, class T1, class T2> std::ostream& operator<<(std::ostream&, std::tuple<T0, T1, T2>&)' previously declared here
   73 | inline ostream & operator << (ostream &out, tuple<T0, T1, T2> &a) {
      |                  ^~~~~~~~
a.cc:220:18: error: redefinition of 'template<class T0, class T1, class T2, class T3> std::ostream& operator<<(std::ostream&, std::tuple<T0, T1, T2, T3>&)'
  220 | inline ostream & operator << (ostream &out, tuple<T0, T1, T2, T3> &a) {
      |                  ^~~~~~~~
a.cc:78:18: note: 'template<class T0, class T1, class T2, class T3> std::ostream& operator<<(std::ostream&, std::tuple<T0, T1, T2, T3>&)' previously declared here
   78 | inline ostream & operator << (ostream &out, tuple<T0, T1, T2, T3> &a) {
      |                  ^~~~~~~~
a.cc:225:18: error: redefinition of 'template<class T> std::ostream& operator<<(std::ostream&, std::vector<_Tp>&)'
  225 | inline ostream & operator << (ostream &out, vector<T> &a) {
      |                  ^~~~~~~~
a.cc:83:18: note: 'template<class T> std::ostream& operator<<(std::ostream&, std::vector<_Tp>&)' previously declared here
   83 | inline ostream & operator << (ostream &out, vector<T> &a) {
      |                  ^~~~~~~~
a.cc:237:8: error: redefinition of 'int main()'
  237 | signed main() {
      |        ^~~~
a.cc:95:8: note: 'int main()' previously defined here
   95 | signed main() {
      |        ^~~~
a.cc:253:6: error: redefinition of 'void smain()'
  253 | void smain() {
      |      ^~~~~
a.cc:111:6: note: 'void smain()' previously defined here
  111 | void smain() {
      |      ^~~~~