criyle/codenet-compile-errors huggingface dataset:
Language: C++

#include <iostream>
#include <vector>
#include <map>
#include <algorithm>
#include <set>
#include <map>
#include <bitset>
using namespace std;
#define prev prev228
#define all(x) (x).begin(), (x).end()

vector<pair<int, int> > edges;

int main()
{
    int n;
    cin >> n;
    if (__builtin_popcount(n) == 1)
    {
        cout << "No";
        return 0;
    }
    cout << "Yes\n";
    if (n % 4 == 3)
    {
        edges.push_back({1, 3});
        edges.push_back({3, 2});
        edges.push_back({2, n + 1});
        edges.push_back({n + 1, n + 3});
        edges.push_back({n + 3, n + 2});
        int lst = n + 2;
        for (int i = 4; i + 3 <= n; i += 4)
        {
            edges.push_back({lst, i});
            edges.push_back({i, i + 1});
            edges.push_back({i + 1, i + 2});
            edges.push_back({i + 2, i + 3});
            edges.push_back({i + 3, n + i});
            edges.push_back({n + i, n + i + 1});
            edges.push_back({n + i + 1, n + i + 2});
            edges.push_back({n + i + 2, n + i + 3});
            lst = n + i + 3;
        }
    }
    else
    {
        edges.push_back({1, 3});
        edges.push_back({3, 2});
        edges.push_back({2, n + 1});
        edges.push_back({n + 1, n + 3});
        edges.push_back({n + 3, n + 2});
        int t = 0;
        int N = (n / 4) * 4;
        for (int k = 0; k < 30; k++)
        {
            if (N & (1 << k))
            {
                t = (1 << k);
                break;
            }
        }
        int v1 = t;
        int v2 = n ^ t;
        int lst = -1;
        for (int i = 4; i + 3 <= n; i += 4)
        {
            if (i == v2) lst = v1;
            if (lst != -1) edges.push_back({lst, i});
            edges.push_back({i, i + 1});
            edges.push_back({i + 1, i + 2});
            edges.push_back({i + 2, i + 3});
            edges.push_back({i + 3, n + i});
            edges.push_back({n + i, n + i + 1});
            edges.push_back({n + i + 1, n + i + 2});
            edges.push_back({n + i + 2, n + i + 3});
            lst = n + i + 3;
        }
        edges.push_back({v1, N});
        edges.push_back({v2, n + N});
        edges.push_back({N, 1});
        if (n % 4 >= 1)
        {
            edges.push_back({N + 1 + n, N});
            edges.push_back({1, N + 1});
        }
        if (n % 4 >= 2)
        {
            edges.push_back({N + 2 + n, N});
            edges.push_back({3, N + 2});
        }
    }
    if (e.size() + 1 != n)
    {
        return 1;
    }
    for (auto e : edges) cout << e.first << " " << e.second << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:92:9: error: 'e' was not declared in this scope
   92 |     if (e.size() + 1 != n)
      |         ^
Language: C++

#include <bits/stdc++.h>
//#include <boost/multiprecision/cpp_int.hpp>
#pragma GCC optimize("O3")
#define REP(i,n) for(int i=0;i<n;i++)
#define REPP(i,n) for(int i=1;i<=n;i++)
#define ALL(obj) (obj).begin(), (obj).end()
#define EPS (1e-9)
#define INF (1e17)
#define PI (acos(-1))
//const double PI = acos(-1);
//const double EPS = 1e-15;
//long long INF=(long long)1E17;
#define i_7 (long long)(1e9+7)
//#define i_7 998'244'353
long mod(long a){
    long long c=a%i_7;
    if(c>=0)return c;
    return c+i_7;
}
long long po(long a, long b){
    if(b==0){
        return 1;
    }
    
    long long z = po(a,b/2);
    z = mod(z*z);
    if(b%2!=0){
        z = mod(a*z);
    }
    return z;
}
using namespace std;
//using namespace boost::multiprecision;

bool prime_(int n){
  if(n==1){
    return false;
  }else if(n==2){
    return true;
  }else{
    for(int i=2;i<=sqrt(n);i++){
      if(n%i==0){
        return false;
      }
    }
    return true;
  }
}

long long gcd_(long long a, long long b){
  if(a<b){
    swap(a,b);
  }
  if(a%b==0){
    return b;
  }else{
    return gcd_(b,a%b);
  }
}
 
long long lcm_(long long x, long long y){
  return (x/gcd_(x,y))*y;
}


int main(){
  
  int n;
  cin>>n;
  if(n == 1){
    cout<<"No"<<endl;
    return 0;
  }
  REPP(i,20){
    if(n == (1<<i)){
      cout<<"No"<<endl;
      return 0;
    }
  }
  if(n%2 == 1){
    cout<<"Yes"<<endl;
    cout<<3<<' '<<n<<endl;
    REPP(i,2){
      cout<<i<<' '<<i+1<<endl;
      cout<<n+i<<' '<<n+i+1<<endl;
    }
    for(int i = 4; i<n; i+=2){
      cout<<i<<' '<<i+1<<endl;
      cout<<i+1<<' '<<1<<endl;
      cout<<1<<' '<<n+i<<endl;
      cout<<n+i<<' '<<n+i+1<<endl;
    }
  }else{
    cout<<"Yes"<<endl;
    cout<<3<<' '<<n<<endl;
    REPP(i,2){
      cout<<i<<' '<<i+1<<endl;
      cout<<n+i<<' '<<n+i+1<<endl;
    }
    for(int i = 4; i<n; i+=2){
      cout<<i<<' '<<i+1<<endl;
      cout<<i+1<<' '<<1<<endl;
      cout<<1<<' '<<n+i<<endl;
      cout<<n+i<<' '<<n+i+1<<endl;
    }
    int msb;
    for(int i = 20; i>=0; i--){
      if((n+1) & (1<<i)){
        msb = i;
        break;
      }
    }
    int a = (1<<i);
    int b = a^(n + 1);
    cout<<a<<' '<<n<<endl;
    cout<<b<<' '<<2*n<<endl;
  }
  return 0; 
}


Compiler output:
a.cc: In function 'int main()':
a.cc:113:17: error: 'i' was not declared in this scope
  113 |     int a = (1<<i);
      |                 ^
Language: C++

#include<bits/stdc++.h>
#define pb push_back
#define all(x) x.begin(), x.end()
using namespace std;
using ll = long long;
using vi = vector<ll>;
using vvi = vector<vi>;
using pi = pair<ll, ll>;
using vpi = vector<pi>;
const ll mod = 998244353;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

int n, x = 0;
int g(int a) {
	if(a==1) return n+2;
	if(a==2) return n+3;
	return a&1?n+1+a:a;
}
int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	cin >> n;
	if(n<3||(n&-n)==n) return cout << "No", 0;
	cout << "Yes\n";
	int a = 1
	cout << a << " " << n+1 << "\n";
	for(int i = a+1; i < n; i+=2) {
		cout << n+1 << " " << i << "\n";
		cout << i << " " << i+1 << "\n";
		cout << n+1 << " " << n+i+1 << "\n";
		cout << n+i+1 << " " << n+i << "\n";
	}
	if(!(n&1)) {
		int x = n&-n, on = n;
		n-=x;
		x^=1;
		if((x&1))x+=on;
		if((n&1))n+=on;
		cout << on << " " << x << "\n";
		cout << 2*on << " " << n << "\n";
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:9: error: expected ',' or ';' before 'cout'
   27 |         cout << a << " " << n+1 << "\n";
      |         ^~~~
Language: C

#pragma GCC optimize("Ofast")
#include<bits/stdc++.h>
using namespace std;
struct __INIT{__INIT(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);}} __init;
#define max3(a,b,c) max(a,max(b,c))
#define min3(a,b,c) min(a,min(b,c))
#define MOD 1000000007
#define INF (1<<30)
#define LINF (1LL<<60)
#define endl "\n"
#define rep(i,n) for(int (i)=0;(i)<(n);(i)++)
#define reprev(i,n) for(int (i)=(n-1);(i)>=0;(i)--)
#define Flag(x) (1<<(x))
#define Flagcount(x) __builtin_popcount(x)
#define pint pair<int,int>
#define pdouble pair<double,double>
#define plint pair<lint,lint>
typedef unsigned long long int ull;
typedef long long lint;

int main(void){
    int N;
    cin >> N;
    if(log2(N)==(int)log2(N)) cout << "No" << endl;
    else{
        cout << 1 << " " << 2 << endl;
        cout << 2 << " " << 3 << endl;
        cout << 3 << " " << N+1 << endl;
        cout << N+1 << " " << N+2 << endl;
        cout << N+2 << " " << N+3 << endl;
        int p=4;
        while(p<N){
            cout << 1 << " " << p << endl;
            cout << p << " " << p+1 << endl;
            cout << 1 << " " << p+1+N << endl;
            cout << p+1+N << " " << p+N << endl;
            p+=2;
        }
        if(p==N){
            int ans=p^1^4;
            cout << p << " " << 4 << endl;
            cout << ans << " " << p << endl;
        }
    }
}

Compiler output:
main.c:2:9: fatal error: bits/stdc++.h: No such file or directory
    2 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

// Do you knOW what it feels like?

		// To be TorTured by your own MinD?
	
	// I don't wanna feel the PAIN.

// I BeG you KILLING me, pleASE...

#include<bits/stdc++.h>
using namespace std;

#define F first
#define S second
#define pb push_back
#define all(x) x.begin(),x.end()
#define SZ(x) (int)(x.size())

typedef long long ll;
typedef pair<ll,ll> pll;

const ll maxn=1e5+10, mod=1e9+7, inf=1e18;

ll n;

ll p(ll i){ return n+i; }

int main(){
	
	ios::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	
	cin>>n;

	ll x=n; while(x%2==0) x/=2; if(x==1) return cout<<"No\n", 0;

	cout<<"Yes\n";
	cout<<"1 2\n";
	cout<<"2 3\n";
	cout<<3<<' '<<p(1)<<"\n";
	cout<<p(1)<<' '<<p(2)<<"\n";
	cout<<p(2)<<' '<<p(3)<<"\n";
		
	for(int i=4;i<n;i+=2){
		cout<<i<<' '<<i+1<<"\n";
		cout<<i+1<<' '<<1<<"\n";
		cout<<p(1)<<' '<<p(i)<<"\n";
		cout<<p(i)<<' '<<p(i+1)<<"\n";
	}

	if(n%4==3) cout<<n<<' '<<n-1<<"\n", cout<<p(2)<<' '<<p(n)<<"\n";
	else cout<<n<<' '<<n-1<<"\n", cout<<p(6)<<' '<<p(n)<<"\n"

	return 0;
}






















Compiler output:
a.cc: In function 'int main()':
a.cc:50:66: error: expected ';' before 'return'
   50 |         else cout<<n<<' '<<n-1<<"\n", cout<<p(6)<<' '<<p(n)<<"\n"
      |                                                                  ^
      |                                                                  ;
   51 | 
   52 |         return 0;
      |         ~~~~~~
Language: C++

/*Lucky_Glass*/
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std;

int n;
int totA;
vector< pair<int,int> > ans;

int main(){
//	freopen("tree.in","r",stdin);
//	freopen("tree.out","w",stdout);
	scanf("%d",&n);
	if(n<3) printf("No\n"),exit(0);
	for(int i=2;i<n;i+=2)
		ans.emplace_back(i,i+1),
		ans.emplace_back(i+n,i+1+n),
		ans.emplace_back(i,1),
		ans.emplace_back(i+1+n,1);
	ans.emplace_back(3,n+1);
	if(n%2==0){
		int x=(n&-n);
		if(x==n) printf("No\n"),exit(0);
		ans.emplace_back(x+1+n,n);
		ans.emplace_back(n-x,n+n);
	}
	printf("Yes\n");
	for(auto it : ans)
		printf("%d %d\n",it.first,it.second);
	return 0;
}

Compiler output:
a.cc:9:1: error: 'vector' does not name a type
    9 | vector< pair<int,int> > ans;
      | ^~~~~~
a.cc: In function 'int main()':
a.cc:17:17: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |                 ans.emplace_back(i,i+1),
      |                 ^~~
      |                 abs
a.cc:21:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   21 |         ans.emplace_back(3,n+1);
      |         ^~~
      |         abs
Language: C++

#include "stdafx.h"
#include<iostream>
#include<cstdio>
#include<cstring>
#include <cstdlib>  
#include <math.h>
#include <cmath>
#include<cctype>
#include<string>
#include<set>
#include<iomanip>
#include <map>
#include<algorithm>
#include <functional>
#include<vector>
#include<climits>
#include<stack>
#include<queue>
#include<bitset>
#include <deque>
#include <climits>
#include <typeinfo>
#include <utility> 
using namespace std;
using ll = long long;
template<typename T>using min_priority_queue = priority_queue<T, vector<T>, greater<T>>;
const ll inf = 1LL << 60;
#define all(x) (x).begin(),(x).end()
#define puts(x) cout << x << endl
#define rep(i,m,n) for(ll i = m;i < n;++i)
#define pb push_back
#define fore(i,a) for(auto &i:a)
#define rrep(i,m,n) for(ll i = m;i >= n;--i)

int beki(int N) {
	while (N > 1) {
		if (N % 2 != 0)return 0;
		N /= 2;
	}
	return 1;
}
int keta(int N) {
	int res = 0;
	while (N > 0) {
		res++;
		N /= 2;
	}
	return res;
}

int main() {
	ios::sync_with_stdio(false);
	cin.tie(nullptr);

	int N;
	cin >> N;
	if (beki(N)) {
		puts("No");
		return 0;
	}

	vector<pair<int, int>>e;
	for (int i = 1; i <= (N - 1) / 2; i++) {
		e.pb({ 1,2*i });
		e.pb({ 2 * i,2 * i + 1 });
		e.pb({ 1,2 * i + 1 + N});
		e.pb({ N + 2 * i + 1, N + 2 * i });
	}
	if (N % 2 == 0) {
		int k = keta(N);
		int x = (1 << (k-1));
		e.pb({N,x});
		e.pb({2*N,N-x});
	}
	e.pb({ N+1,2 });
	
	puts("Yes");
	fore(x, e)cout << x.first << " " << x.second << endl;
	
	return 0;
}

Compiler output:
a.cc:1:10: fatal error: stdafx.h: No such file or directory
    1 | #include "stdafx.h"
      |          ^~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	scanf("%d",&n);
	int tmp=n;
	while((tmp&1)==0)tmp>>=1;
		if(tmp==1){printf("No");return 0;}
	printf("Yes\n");
		
	if(n==3)
	{
		printf("1 2\n2 3\n3 4\n4 5\n5 6\n");
		return 0;
	}
	printf("1 2\n2 3\n3 4\n4 5\n5 6\n");
	for(int i=4;i+1<=n;i+=2)
	{
		printf("%d %d\n%d %d\n",2,2*i-1,2*i-1,2*i+2);
		printf("%d %d\n%d %d\n",2,2*i+1,2*i+1,2*i);
	}
	if(n%2==0)
	{
		int k=x&-x;
		int x=n^k^1;
		if(x==3)
			printf("%d %d\n%d %d\n",2*k-1,2*n-1,3,2*n);
		else
			printf("%d %d\n%d %d\n",2*k-1,2*n-1,2*x-1,2*n);
		
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:23: error: 'x' was not declared in this scope
   25 |                 int k=x&-x;
      |                       ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define x first
#define y second
typedef pair<int, int> pii;
typedef long long ll;
const int MOD = 1000000007;
const int N = 1e6 + 10;

int n;

void No(){
  puts("No");
  exit(0);
}
vector<pii> E;
void print(){
  puts("Yes");
  for (int i = 0; i < E.size(); ++i){
    printf("%d %d\n",E[i].x,E[i].y);
  }
  puts("");
  exit(0);
}

int main() {
  cin >> n;
  if(n < 3){
    No();
  }
  if(n%4 == 0){
    No();
  }
  int mx = ((n/4)-1)*4 + 3;
  if(n%4 == 3)mx = n;
  for(int i = 1 ; i+1 <= mx;++i)E.push_back(make_pair(i,i+1));
  E.push_back(make_pair(mx,n+1)); 
  for(int i = 1+n; i+1 <= n+mx;++i)E.push_back(make_pair(i,i+1));
  if(n%4 == 1){
    E.push_back(make_pair(mx+1,mx+2));
    E.push_back(make_pair(mx+2,1));
    E.push_back(make_pair(1,mx+1+n));
    E.push_back(make_pair(mx+1+n,mx+2+n));
  }
  if(n%4 == 2){
    E.push_back(make_pair(mx+1,mx+3));
    E.push_back(make_pair(mx+1,mx+2));
    E.push_back(make_pair(mx+1,2));
    E.push_back(make_pair(2,mx+3+n));
    E.push_back(make_pair(mx+3+n,mx+1+ndon));
    E.push_back(make_pair(3,mx+2+n));
  }
  print();

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:52:39: error: 'ndon' was not declared in this scope
   52 |     E.push_back(make_pair(mx+3+n,mx+1+ndon));
      |                                       ^~~~
Language: C++

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

#define pb push_back
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define debug(x) cerr << #x << " : " << x << '\n'

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;
typedef long double ld;
typedef string str;
typedef pair<ll, ll> pll;
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const ll Mod = 998244353LL;
const int Maxn = 2e5 + 10;
const ll Inf = 2242545357980376863LL;
const ll Log = 30;

ll a[10];

int main(){
	ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	ll n;
	cin >> n;
	if(__builtin_popcountll(n) == 1) return cout << "No";
	if(n){
		cout << a[n + 1000];
	} else cout << "No";
	return 0;
	
}

/*

                                 ____              ,----..               ,----..
   ,---,                       ,'  , `.           /   /   \             /   /   \
  '  .' \                   ,-+-,.' _ |          /   .     :           /   .     :
 /  ;    '.              ,-+-. ;   , ||         .   /   ;.  \         .   /   ;.  \
:  :       \            ,--.'|'   |  ;|        .   ;   /  ` ;        .   ;   /  ` ;
:  |   /\   \          |   |  ,', |  ':        ;   |  ; \ ; |        ;   |  ; \ ; |
|  :  ' ;.   :         |   | /  | |  ||        |   :  | ; | '        |   :  | ; | '
|  |  ;/  \   \        '   | :  | :  |,        .   |  ' ' ' :        .   |  ' ' ' :
'  :  | \  \ ,'        ;   . |  ; |--'         '   ;  \; /  |        '   ;  \; /  |
|  |  '  '--'          |   : |  | ,             \   \  ',  /          \   \  ',  /
|  :  :                |   : '  |/               ;   :    /            ;   :    /
|  | ,'                ;   | |`-'                 \   \ .'              \   \ .'
`--''                  |   ;/                      `---`                 `---`
                       '---'

*/


Compiler output:
a.cc: In function 'int main()':
a.cc:30:54: error: cannot convert 'std::basic_ostream<char>' to 'int' in return
   30 |         if(__builtin_popcountll(n) == 1) return cout << "No";
      |                                                 ~~~~~^~~~~~~
      |                                                      |
      |                                                      std::basic_ostream<char>
Language: C++

#include<bits/stdc++.h>

using namespace std;

int main()
{
  	int n;
  	cin>>n;
  	if(n%4==3)
    {
      	cout<<"Yes\n";
      	for(int i=1;i<2*n;i++)
        {
          	cout<<i<<' '<<i+1<<'\n';
        }
    }
    else 
    {
      	cout<<"No\n";

Compiler output:
a.cc: In function 'int main()':
a.cc:19:22: error: expected '}' at end of input
   19 |         cout<<"No\n";
      |                      ^
a.cc:18:5: note: to match this '{'
   18 |     {
      |     ^
a.cc:19:22: error: expected '}' at end of input
   19 |         cout<<"No\n";
      |                      ^
a.cc:6:1: note: to match this '{'
    6 | {
      | ^
Language: C++

You are given an integer N. Determine if there exists a tree with 2N vertices numbered 1 to 2N satisfying the following condition, and show one such tree if the answer is yes.

Assume that, for each integer i between 1 and N (inclusive), Vertex i and N+i have the weight i. Then, for each integer i between 1 and N, the bitwise XOR of the weights of the vertices on the path between Vertex i and N+i (including themselves) is i.

Compiler output:
a.cc:1:1: error: 'You' does not name a type
    1 | You are given an integer N. Determine if there exists a tree with 2N vertices numbered 1 to 2N satisfying the following condition, and show one such tree if the answer is yes.
      | ^~~
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <stack>
#include <queue>
#include <cmath>
using namespace std;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef long long ll;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;

int main()
{
    ll n;
    cin >> n;
    ll n = pow(2, 100) + 1;

    double l = log2(n);
    if ((ll)l - (ll)floor(l) == 0)
    {
        throw "test";
        cout << "No" << endl;
    }
    else
    {
        cout << "Yes" << endl;

        printf("%lld %lld\n", 1, 2);
        printf("%lld %lld\n", 2, 3);
        printf("%lld %lld\n", 3, 1 + n);
        printf("%lld %lld\n", 1 + n, 2 + n);
        printf("%lld %lld\n", 2 + n, 3 + n);

        for (ll i = 4; i < n; i += 2)
        {
            printf("%lld %lld\n", i, i + 1);
            printf("%lld %lld\n", i + 1, 1);
            printf("%lld %lld\n", 1, i + n);
            printf("%lld %lld\n", i + n, i + 1 + n);
        }

        if (n % 2 == 0)
        {
            printf("%lld %lld\n", n - 1, n);
            printf("%lld %lld\n", n ^ (n - 1), n + n);
        }
    }

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:8: error: redeclaration of 'll n'
   19 |     ll n = pow(2, 100) + 1;
      |        ^
a.cc:17:8: note: 'll n' previously declared here
   17 |     ll n;
      |        ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
int lowbit(int x){
    return x&(-x);
}
int main()
{
    int n;
    scanf("%d",&n);
    if(n<3){
        return 0*puts("No");
    }
    if(n%4==3){
        puts("Yes");
        for(int i=1;i<(2*n);i++){
            printf("%d %d\n",i,i+1);
        }
        return 0;
    }
    if(n%4==1){
        puts("Yes");
        vector<int> v;
        for(int i=1;i<=(n-2);i++){
            v.push_back(i);
        }
        for(int i=1;i<=(n-2);i++){
            v.push_back(i+n);
        }
        for(int i=0;i<v.size()-1;i++){
            printf("%d %d\n",v[i],v[i+1]);
        }
        printf("%d %d\n",n,n-1);
        printf("%d %d\n",n-1,1);
        printf("%d %d\n",1,n+n);
        printf("%d %d\n",n+n,n+n-1);
        return 0;
    }
    if(n%4==0){
        if(lowbit(n)==n) return 0*puts("No");
        vector<int> v;
        int tn=n;
        while(n){
            v.push_back(lowbit(n));
            n-=lowbit(n);
        }
        n=tn;
        for(int i=1;i<=n-1;i++) {
            v.push_back(i);
        }
        v.erase(unique(v.begin(),v.end()),v.end());
        for(int i=1;i<v.size();i++){
            printf("%d %d\n",v[i],v[i-1]);
        }
        printf("%d %d\n",v[0]+n,v[v.size()-1]);
        for(int i=1;i<v.size();i++){
            printf("%d %d\n",v[i]+n,v[i-1]+n);
        }
        printf("%d %d\n",n,lowbit(tn));
        while(lowbit(tn)!=tn) tn-=lowbit(tn);
        printf("%d %d\n",n+n,tn);
        return 0;
    }
    if(n%4==2){
        int tn=n;
        vector<int> v;
        while(tn){
            if(lowbit(tn)>n-3){
                return 0*puts("-1");
            }
            v.push_back(lowbit(tn));
            tn-=lowbit(tn);
        }
        for(int i=1;i<=n-3;i++){
            v.push_back(i);
        }
        v.erase(unique(v.begin(),v.end()),v.end());
        for(int i=1;i<v.size();i++)
            prinf("%d %d\n",v[i],v[i-1]);
        printf("%d %d\n",v[0]+n,v[v.size()-1]);
        for(int i=1;i<v.size();i++){
            printf("%d %d\n",v[i]+n,v[i-1]+n);
        }
        printf("%d %d\n",n-1,n-2);
        printf("%d %d\n",n-2,1);
        printf("%d %d\n",1,n+n-1);
        printf("%d %d\n",n+n-1,n+n-2);
        tn=n;
        printf("%d %d\n",n,lowbit(tn));
        while(lowbit(tn)!=tn) tn-=lowbit(tn);
        printf("%d %d\n",n+n,tn);
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:79:13: error: 'prinf' was not declared in this scope; did you mean 'printf'?
   79 |             prinf("%d %d\n",v[i],v[i-1]);
      |             ^~~~~
      |             printf
Language: C++

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;

#define fi first
#define se second
#define repl(i,a,b) for(ll i=(ll)(a);i<(ll)(b);i++)
#define rep(i,n) repl(i,0,n)
#define all(x) (x).begin(),(x).end()
#define dbg(x) cout<<#x"="<<x<<endl
#define mmax(x,y) (x>y?x:y)
#define mmin(x,y) (x<y?x:y)
#define maxch(x,y) x=mmax(x,y)
#define minch(x,y) x=mmin(x,y)
#define uni(x) x.erase(unique(all(x)),x.end())
#define exist(x,y) (find(all(x),y)!=x.end())
#define bcnt __builtin_popcountll

#define INF 1e16
#define mod 1000000007

ll n;
vector<P> es;

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);

  cin>>n;
  if(n==1){
    cout<<"No"<<endl;
    return 0;
  }

  for(ll i=1;i<(n%2==0?n-1:n);i+=2){
    es.push_back(P(0,i)); es.push_back(P(i,i+1));
    if(i==1)es.push_back(P(i+1,n));
    es.push_back(P(0,n+1+i)); es.push_back(P(n+1+i,n+i));
  }

  if(n%2==0){
  bool ok=false;
  repl(a,1,n){
    ll b=((n+1)^a);
    if(a!=b&&b<n){
      if(a%2==0){
        es.push_back(P(n-1,a-1));
      }else{
        es.push_back(P(n-1,a-1+n));
      }
      if(b%2==0){
        es.push_back(P(n-1+n,b-1));
      }else{
        es.push_back(P(n-1+n,b-1+n));
      }
      ok=true;
      break;
    }
  }
}

  if(!ok){
    cout<<"No"<<endl;
    return 0;
  }

  cout<<"Yes"<<endl;
  rep(i,es.size())cout<<es[i].fi+1<<" "<<es[i].se+1<<endl;

  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:65:7: error: 'ok' was not declared in this scope
   65 |   if(!ok){
      |       ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_;
#define FOR(i, begin, end) for(int i=(begin);i<(end);i++)
#define REP(i, n) FOR(i,0,n)
#define IFOR(i, begin, end) for(int i=(end)-1;i>=(begin);i--)
#define IREP(i, n) IFOR(i,0,n)
#define Sort(v) sort(v.begin(), v.end())
#define Reverse(v) reverse(v.begin(), v.end())
#define all(v) v.begin(),v.end()
#define SZ(v) ((int)v.size())
#define Lower_bound(v, x) distance(v.begin(), lower_bound(v.begin(), v.end(), x))
#define Upper_bound(v, x) distance(v.begin(), upper_bound(v.begin(), v.end(), x))
#define Max(a, b) a = max(a, b)
#define Min(a, b) a = min(a, b)
#define bit(n) (1LL<<(n))
#define bit_exist(x, n) ((x >> n) & 1)
#define debug(x) cout << #x << "=" << x << endl;
#define vdebug(v) cout << #v << "=" << endl; REP(i_debug, v.size()){ cout << v[i_debug] << ","; } cout << endl;
#define mdebug(m) cout << #m << "=" << endl; REP(i_debug, m.size()){ REP(j_debug, m[i_debug].size()){ cout << m[i_debug][j_debug] << ","; } cout << endl;}
#define pb push_back
#define f first
#define s second
#define int long long
#define INF 1000000000000000000
template<typename T> istream &operator>>(istream &is, vector<T> &v){ for (auto &x : v) is >> x; return is; }
template<typename T> ostream &operator<<(ostream &os, vector<T> &v){ for(int i = 0; i < v.size(); i++) { cout << v[i]; if(i != v.size() - 1) cout << endl; }; return os; }
template<typename T> void Out(T x) { cout << x << endl; }
template<typename T1, typename T2> void Ans(bool f, T1 y, T2 n) { if(f) Out(y); else Out(n); }

using vec = vector<int>;
using mat = vector<vec>;
using Pii = pair<int, int>;
using PiP = pair<int, Pii>;
using PPi = pair<Pii, int>;
using bools = vector<bool>;
using pairs = vector<Pii>;

//int dx[4] = {1,0,-1,0};
//int dy[4] = {0,1,0,-1};
//char d[4] = {'D','R','U','L'};

const int mod = 1000000007;
//const int mod = 998244353;
#define Add(x, y) x = (x + (y)) % mod
#define Mult(x, y) x = (x * (y)) % mod



signed main(){

    int N; cin >> N;
    int d;
    REP(i, 100){
        if(N <= bit(i)){
            d = i;
            break;
        }
    }
    if(N == bit(d)){
        Out("No");
        return 0;
    }

    //N>=3
    pairs ans;
    ans.pb(Pii(1, 3));
    ans.pb(Pii(3, 2));
    ans.pb(Pii(2, 1 + N));
    ans.pb(Pii(1 + N, 3 + N));
    ans.pb(Pii(3 + N, 2 + N));

    for(int i = 4; i <= N; i += 2){
        if(i == N){
            ans.pb(Pii(i, bit(d - 1)));
            int r = N ^ bit(d - 1) ^ 1;
            ans.pb(Pii(i + N, r + N);
        }else{
            ans.pb(Pii(i, 1));
            ans.pb(Pii(i + 1, i));
            ans.pb(Pii(i + 1 + N, i + N));
            ans.pb(Pii(i + 1 + N, 1 + N));
        }
    }

    Out("Yes");
    REP(i, 2 * N - 1) cout << ans[i].f << " " << ans[i].s << endl;

    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:77:37: error: expected ')' before ';' token
   77 |             ans.pb(Pii(i + N, r + N);
      |                   ~                 ^
      |                                     )
Language: C++


#include <iostream>
#include <string>
#include <algorithm>
#include <utility>
#include <iomanip>
#include <functional>
#include <queue>
#include <stack>
#include <map>
#include <set>
#include <vector>
#include <cmath>
#include <cctype>
#include <cstdio>
#define ll long long
#define INF 1000000000000000001
#define MOD 1000000007
using namespace std;

int pow2check(int x){
    int temp=1;
    while(temp<x){
        temp*=2;
    }
    if(temp==x){
        return 1;
    }else{
        return 0;
    }
}

int main(){
    int N;
    cin >> N;


    if(pow2check(N)){
        cout<<"No"<<endl;
        break;
    }
    
    int temp=1;
    while(temp*2<N){
        temp*=2;
    }
    
    if(N%2==1){
        cout<<"Yes"<<endl;
        cout<<1<<" "<<2<<endl;
        cout<<2<<" "<<3<<endl;
        cout<<3<<" "<<N+1<<endl;
        cout<<N+1<<" "<<N+2<<endl;
        cout<<N+2<<" "<<N+3<<endl;

        for(int i=4; i<=N; i+=2){
            cout<<i<<" "<<i+1<<endl;
            cout<<i+1<<" "<<1<<endl;
            cout<<1<<" "<<N+i<<endl;
            cout<<N+i<<" "<<N+i+1<<endl;
        }
    }else{
        //2^n, 2^n+1, 2^n+2を構成したらいける
        cout<<"Yes"<<endl;
        cout<<temp<<" "<<temp+1<<endl;
        cout<<temp+1<<" "<<1<<endl;
        cout<<1<<" "<<N+temp<<endl;
        cout<<N+temp<<" "<<N+temp+1<<endl;
        cout<<N+temp+1<<" "<<N+1<<endl;
        
        cout<<N+temp<<" "<<N+2<<endl;
        cout<<N+2<<" "<<temp+2<<endl;
        cout<<N+temp<<" "<<N+temp+2<<endl;
        cout<<N+temp+2<<" "<<2<<endl;
        
        cout<<N+temp+2<<" "<<N+3<<endl;
        cout<<1<<" "<<3<<endl;

        

        for(int i=4; i<=temp-1; i++){
            cout<<i<<" "<<i+1<<endl;
            cout<<i+1<<" "<<1<<endl;
            cout<<1<<" "<<N+i<<endl;
            cout<<N+i<<" "<<N+i+1<<endl;
        }
        
        for(int i=temp+3; i<=N; i++){
            cout<<i+1<<" "<<i<<endl;
            cout<<i<<" "<<(i^(i+1))<<endl;
            cout<<(i^(i+1))<<N+i+1<<endl;
            cout<<N+i+1<<N+i<<endl;
        }
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:9: error: break statement not within loop or switch
   40 |         break;
      |         ^~~~~
Language: C++

#include <bits/stdc++.h>

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define sf scanf
#define pf printf
#define pb push_back
#define mp make_pair
#define PI ( acos(-1.0) )
#define mod 1000000007LL
#define IN freopen("C.in","r",stdin)
#define OUT freopen("output.txt","w",stdout)
#define FOR(i,a,b) for(i=a ; i<=b ; i++)
#define DBG pf("Hi\n")
#define i64 long long int
#define eps (1e-8)
#define xx first
#define yy second
#define ln 17
#define off 2

using namespace __gnu_pbds;
using namespace std ;

typedef tree< i64, null_type, less<i64>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef pair<i64, i64> pii;

#define maxn 300005

vector < pair<int,int> > vp ;

vector <int> v ;

int main()
{
    int n ;

    scanf("%d",&n) ;

    for(int i=0 ; i<=20 ; i++)
    {
        if( (n^(1<<i)) == 0 )
        {
            printf("No\n") ;
            return 0 ;
        }
    }

    for(int i=n ; i>=1 ; i--) v.pb(i) ;

    int l = 0 , tot = 3 ;

    deque<int>  dq ;

    for(int i=1 ; i<=3 ; i++) dq.push_back(i) ;
    for(int i=1 ; i<=3 ; i++) dq.push_back(i) ;

    for(l=2 ; (1<<l)+tot < n ; l++ ){

        tot += (1<<l) ;

        for(int j=1 ; j<=(1<<l) ; j++ ) dq.push_back(i+tot) ;
        for(int j=(1<<l) ; j>=1 ; j-- ) dq.push_back(i+tot + n ) ;

    }

    for(int i=1 ; i<dq.size() ; i++) vp.pb( mp(dq[i-1],dq[i]) ) ;

    int rem =  n - (tot) ;

    int x = 0 ;

    for(int i=n+1 ; i<=tot+(1<<l) ; i++) x ^= i ;

    dq.clear() ;

    for(int i=tot+1 ; i<)

    if( rem%2==0 )
    {
        for(int i = tot+1 ; i<n ; i++)
        {
            vp.pb( mp( i,i+1 ) ) ;
            vp.pb( mp( n+i,n+i+1 ) ) ;
        }

        vp.pb( mp( tot+1 , x ) ) ;
        vp.pb( mp( 2*n , x+n ) ) ;
    }
    else{

        for(int i = tot+2 ; i<n ; i++)
        {
            vp.pb( mp( i,i+1 ) ) ;
            vp.pb( mp( n+i,n+i+1 ) ) ;
        }

        vp.pb( mp( tot+2 , x ) ) ;
        vp.pb( mp( 2*n , x+n ) ) ;

        vp.pb( mp(3,tot+1) ) ;
        vp.pb( mp(3+n,tot+1+n) ) ;
    }

    printf("Yes\n") ;
    for(int i=0 ; i<vp.size() ; i++) printf("%d %d\n",vp[i].xx,vp[i].yy) ;

    return 0 ;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:63:54: error: 'i' was not declared in this scope
   63 |         for(int j=1 ; j<=(1<<l) ; j++ ) dq.push_back(i+tot) ;
      |                                                      ^
a.cc:64:54: error: 'i' was not declared in this scope
   64 |         for(int j=(1<<l) ; j>=1 ; j-- ) dq.push_back(i+tot + n ) ;
      |                                                      ^
a.cc:78:25: error: expected primary-expression before ')' token
   78 |     for(int i=tot+1 ; i<)
      |                         ^
a.cc:78:25: error: expected ';' before ')' token
   78 |     for(int i=tot+1 ; i<)
      |                         ^
      |                         ;
Language: C++

#include <iostream>
#include <cassert>
#include <set>
#include <utility>
#include <vector>
using namespace std;
set<int> s;
vector<pair<int,int>> v;
int n;
void solve(int k){
	if(k==0){
		v.push_back({1,2});
		v.push_back({2,3});
		v.push_back({3,1 + n});
		v.push_back({1 + n,2 + n});
		v.push_back({2 + n,3 + n});
	}else{
		for(int i=0;i<3;i++){
			v.push_back({k + i,k + i + 1});
		}
		v.push_back({k + 3,k + n});
		for(int i=0;i<3;i++){
			v.push_back({k + n + i,k + n + i + 1});
		}
	}
}

int main(){
	int i;
	cin >> n;
	int k = n/4*4;
	for(i=0;i<k;i++){
		solve(i) i += 4;
		v.push_back({n + i - 1,i});
	}
	if(n%4==3){
		cout << "Yes" << endl;
		for(i=0;i<v.size();i++){
			cout << v[i].first << " " << v[i].second << endl;
		}
	}
	if(n%4==1){
		cout << "Yes" << endl;
		for(i=0;i<v.size();i++){
			cout << v[i].first << " " << v[i].second << endl;
		}
		cout << n - 1 << " " << n << endl:
		cout << n << " " << 1 << endl;
		cout << 1 << " " << 2*n - 1 << endl;
		cout << 2*n - 1 << " " << 2*n << endl;
	}
	if(n%4==2){
		cout << "Yes" << endl;
		for(i=0;i<v.size();i++){
			cout << v[i].first << " " << v[i].second << endl;
		}
		cout << n << " " << n - 1 << endl;
		cout << n - 1 << " " << 3 << endl;
		cout << n - 2 << " " << n - 1<< endl;
		cout << 2 << " " << 2*n - 1<< endl;
		cout << 2*n - 2 << " " << 2*n - 1 << endl;
		cout << 2*n << " " << 2*n - 1 << endl;
	}
	if(n%4==0){
		cout << "No" << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:25: error: expected ';' before 'i'
   33 |                 solve(i) i += 4;
      |                         ^~
      |                         ;
a.cc:47:50: error: found ':' in nested-name-specifier, expected '::'
   47 |                 cout << n - 1 << " " << n << endl:
      |                                                  ^
      |                                                  ::
a.cc:47:46: error: 'endl' is not a class, namespace, or enumeration
   47 |                 cout << n - 1 << " " << n << endl:
      |                                              ^~~~
Language: C++

#include <algorithm>
#include <cmath>
#include <deque>
#include <iomanip>
#include <iostream>
#include <map>
#include <numeric>
#include <set>
#include <string>
#include <vector>

using namespace std;
using LLONG = long long;

int main()
{
    int N;
    cin >> N;
    int xor = 0;
    for (int i = 1; i <= N; ++i)
    {
        xor ^= i;
    }
    if (xor != 0)
    {
        cout << "No" << endl;
        return 0;
    }
    else
    {
        cout << "Yes" << endl;
    }
    for (int i = 1; i <= 2 * N - 1; ++i)
    {
        cout << i << ' ' << i + 1 << endl;
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:9: error: expected unqualified-id before 'xor' token
   19 |     int xor = 0;
      |         ^~~
a.cc:22:9: error: expected primary-expression before 'xor' token
   22 |         xor ^= i;
      |         ^~~
a.cc:22:13: error: expected primary-expression before '^=' token
   22 |         xor ^= i;
      |             ^~
a.cc:24:9: error: expected primary-expression before 'xor' token
   24 |     if (xor != 0)
      |         ^~~
a.cc:24:13: error: expected primary-expression before '!=' token
   24 |     if (xor != 0)
      |             ^~
Language: C

#include <bits/stdc++.h>
using namespace std;

int main (){
	int n,nn,i,j,p;
	cin >> n;
	nn=n;
	while(1){
		if(nn==1){
			cout << "No" << endl;
			return 0;
		}
		if((nn%2)==1) break;
		else nn=nn/2;
	}
	cout << "Yes" << endl;
	if(n%2==0) nn=n-2;
	else nn=n-1;
	cout << "1 2" << endl; 
	cout << "2 3" << endl;
	cout << "3 " << 1+n << endl;
	cout << 1+n << " " << 2+n << endl;
	cout << 2+n << " " << 3+n << endl;
	for(i=4;i<=nn;i=i+2){
		cout << "1 " << (i) << endl;
		cout << (i) << " " << (i+1) << endl;
		cout << "1 " << (i+1+n) << endl;
		cout << (i+1+n) << " " << (i+n) << endl;
	}
	if(n%2==0){
		j=1;
		while(1){
			if(n<j){
				j=j/2;
				break;
			}
			j=j*2;
		}
		cout << n << " " << n+j+1 << endl;
		cout << 2*n << " " << n-j << endl;
	}
	return 0;
}

Compiler output:
main.c:1:10: fatal error: bits/stdc++.h: No such file or directory
    1 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using nmaespace std;
int main()
{
  int n,a;
  cin>>n>>a;
  int nnn;
  int nn;
  int n;
  int aaa;
  int aa;
  int a;
  cout<<a<<a+1<<a+2<<a+3<<a+4<<a+4;
  return 0;
}

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'nmaespace'
    2 | using nmaespace std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin>>n>>a;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:9:7: error: redeclaration of 'int n'
    9 |   int n;
      |       ^
a.cc:5:7: note: 'int n' previously declared here
    5 |   int n,a;
      |       ^
a.cc:12:7: error: redeclaration of 'int a'
   12 |   int a;
      |       ^
a.cc:5:9: note: 'int a' previously declared here
    5 |   int n,a;
      |         ^
a.cc:13:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   13 |   cout<<a<<a+1<<a+2<<a+3<<a+4<<a+4;
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include <iostream>
#include <set>
using namespace std;
int p[200];
bool chk(int n){
    for(int i=1;i<=n;i++)p[i]=i;
    do{
        set<int> st; st.clear();
        int s=0;
        for(int i=1;i<=n;i++){
            s^=p[i]; if(s<=n) st.insert(s);
        }
        if(st.size()==n) {
            for(auto x: st)
                printf("# %d\n", x);
            for(int i=1;i<=n;i++){
                printf("%d ", p[i]);
            }
            printf("\n");
        }
    } while(next_permutation(p+1,p+1+n));
    return 0;
}
int main() {
    int n; cin>>n;
    if(n%4==3){
        printf("Yes\n");
        for(int i=1;i<=2*n;i++)
            printf("%d ", i);
    } else{
        printf("No\n");
    }
}

Compiler output:
a.cc: In function 'bool chk(int)':
a.cc:21:13: error: 'next_permutation' was not declared in this scope
   21 |     } while(next_permutation(p+1,p+1+n));
      |             ^~~~~~~~~~~~~~~~
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define df 0
int nibeki(int n);
void solve_odd(int n);
void solve_even(int n);


int main(){
  int n,flag;
  scanf("%d",&n);
  if(nibeki(n)) {
    printf("No\n");
    return 0;
  }
  printf("Yes\n")
  if(n%2){
    solve_odd(n);
  }else{
    solve_even(n);
  }

  return 0;
}
int nibeki(int n){
  while(n%2==0)n/=2;
  return n==1?1:0;
}
void solve_odd(int n){
  int i,k=n/2;
  printf("%d %d\n",n,n+1);
  for(i=1;i<=k;i++){
    printf("%d %d\n",1,2*i);
    printf("%d %d\n",2*i,2*i+1);
    printf("%d %d\n",1,2*i+1+n);
    printf("%d %d\n",2*i+1+n,2*i+n);
  }
}
void solve_even(int n){
  int i,k=n/2;
  printf("%d %d\n",n,2*n-1);
  printf("%d %d\n",n*2,n^(n-1)^1);
  for(i=1;i<k;i++){
    printf("%d %d\n",1,2*i);
    printf("%d %d\n",2*i,2*i+1);
    printf("%d %d\n",1,2*i+1+n);
    printf("%d %d\n",2*i+1+n,2*i+n);
  }
  
}


/// confirm df==0 ///


Compiler output:
main.c: In function 'main':
main.c:17:18: error: expected ';' before 'if'
   17 |   printf("Yes\n")
      |                  ^
      |                  ;
   18 |   if(n%2){
      |   ~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define r(i,n) for(int i=0;i<n;i++)
#define int long long
typedef pair<int,int>P;
#define F first
#define S second

int main(){
	int n;
	cin>>n;
	int N = n;
	if(__builtin_popcount(n)==1){
		cout<<"No"<<endl;
		return 1;
	}
	cout<<"Yes"<<endl;
	int p=0;

	if(N%2==0)p=1,N--;

	while(N!=1){
		cout<<1<<' '<<N-1<<endl;
		cout<<N-1<<' '<<N<<endl;
		cout<<1<<' '<<n+N<<endl;
		cout<<n+N<<' '<<n+N-1<<endl;
		N-=2;
	}
	cout<<n+1<<' '<<3<<endl;
	if(p){
		cout<<2<<' '<<n<<endl;
		cout<<n+n-1<<' '<<n+n<<endl;
	}
}

Compiler output:
cc1plus: error: '::main' must return 'int'
Language: C++

#include<iostream>
#include<bits/stdc++.h>
#include<math.h>
#include<cstdio>
#include<stdlib.h> 
#include <cstring>
#include <string>    
#include <vector>
#include <queue>
#include <map>
#include <algorithm>
#include <cmath>
typedef long long ll;
typedef pair<ll, ll> P;
ll n, m;
string str;
     
using namespace std;
class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        int i=0,j=0;
        vector<int> ans;
        int k=0;
        for(i=0;i<nums.size();i++){
            for(j=i;j<nums.size();j++){ 
                if(i!=j && (nums[i]+nums[j] == target ) ){
                    ans.push_back(i);
                    ans.push_back(j);
                    k=0;
                    break;
                }
                k++;
            }
            if(k==0) break;
        }
        return ans;
    }
};
int mainPAaa(){
	int n,i;
	int a[100005];
	bool zero=true,three=true;
	cin >> n;
	for(i=0;i<n;i++) {
		cin >> a[i];
		if(a[i]!=0) zero=false;
	}
	if(zero){
		cout << "Yes" << endl;
		return 0;
	}
	if(n%3!=0){
		cout << "No" << endl;
		return 0;
	}
	sort(a,a+n);
	for(i=1;i<n;i++){
		if(i!=n/3&&i!=n*2/3){
			if(a[i-1]!=a[i]) three=false;
		}
	}
	int b=(a[0]^a[n/3]);
	if(three&&(b==a[n*2/3])) cout << "Yes" << endl;
	else cout << "No" << endl;
	return 0;
}
int mka() {
	// your code goes here
	long long n,i=0;
	cin>>n;
	long long arr[n];
	for(i=0;i<n;i++){
		cin>>arr[i];
	}
	sort(arr,arr+n);
	if(arr[0]==1&&arr[1]==2&&arr[2]==3&&n==3)
	cout<<"Yes"<<endl;
	else
	cout<<"No"<<endl;
	return 0;
}

int maMAA(){
     int i,j,n,c=0,k;
      cin>>n;int a[n+1];
      for(i=0;i<n;i++)
       cin>>a[i];
      for(i=0;i<n;i++){
        for(j=0;j<n&&j!=i;j++){
        for(k=0;k<n&&k!=i&&k!=j;k++){
        	if((a[j]^a[k])!=a[i])
         {c=1;break;}
      }if(c==1) break;}if(c==1) break;}
      if(c==1) cout<<"No";
      else cout<<"Yes";
    return 0;
}
int mA(){
    std::ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    vector<int> nums={2,7,11,15,-100,19,9,101,87,199,100101,-1818,29,-1,101};
    int target=98;
    Solution o;
    vector<int> ans={o.twoSum(nums,target)};
    for(auto i:ans){
        cout<<i<<" ";
    }
    return 0;
}
       
    bool two(ll n){
    	while(n % 2 == 0 && n > 0){
    		n /= 2;
    	}
    	if(n == 1){return true;}
    	else{return false;}
    }
     
    int main(){
    	cin >> n;
    	if(n != 1 && two(n+1)){
    		cout << "Yes" << endl;
    		for(ll i = 1; i <= 2*n-1; i++){
    			cout << i << " " << i+1 << endl;
    		}
    	}
    	else{cout << "No" << endl;}
    	return 0;
    }




Compiler output:
a.cc:14:9: error: 'pair' does not name a type
   14 | typedef pair<ll, ll> P;
      |         ^~~~
a.cc:16:1: error: 'string' does not name a type; did you mean 'stdin'?
   16 | string str;
      | ^~~~~~
      | stdin
Language: C++

#include<iostream>
#include<cmath>
#include<cstdio>
#include<cstring>
#include<queue>
#include<stack>
#include<vector>
#include<set>
#include<map>
#include<algorithm>

#define int long long 

using namespace std;

int a[20],n;

int f(int l,int r,int xl,int xr)
{
	int i,j;
	if(r-l<=1) return 0;
	int ans=0x3f3f3f3f3f3f3f3f;
	for(i=l+1;i<r;i++)
	{
		ans=min(ans,f(l,i,xl,xl+xr)+f(i,r,xl+xr,xR)+a[i]*(xl+xr));
	}
	return ans;
}

signed main()
{
	ios::sync_with_stdio(false);
	register int i,j;
	cin>>n;
	for(i=1;i<=n;i++)
	cin>>a[i];
	cout<<a[1]+a[n]+f(1,n,1,1);
}


Compiler output:
a.cc: In function 'long long int f(long long int, long long int, long long int, long long int)':
a.cc:25:57: error: 'xR' was not declared in this scope; did you mean 'xr'?
   25 |                 ans=min(ans,f(l,i,xl,xl+xr)+f(i,r,xl+xr,xR)+a[i]*(xl+xr));
      |                                                         ^~
      |                                                         xr
a.cc: In function 'int main()':
a.cc:33:22: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   33 |         register int i,j;
      |                      ^
a.cc:33:24: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   33 |         register int i,j;
      |                        ^
Language: C++

#include<cstdio>
#define int long long
using namespace std;

int n;
int a[20];

inline int dp(int l, int r, int x, int y) {
	if(r - l <= 1) return 0;
	int ans = 0x7fffffff;
	for(register int i = l + 1; i <= r - 1; i++)
		ans = min(ans, dp(l, i, x, x + y) + dp(i, r, x + y, y) + a[i] * (x + y));
	return ans;
}

signed main() {
	scanf("%lld", &n);
	for(register int i = 1; i <= n; i++) scanf("%lld", &a[i]);
	printf("%lld\n", dp(1, n, 1, 1) + a[1] + a[n]);
}

Compiler output:
a.cc: In function 'long long int dp(long long int, long long int, long long int, long long int)':
a.cc:11:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   11 |         for(register int i = l + 1; i <= r - 1; i++)
      |                          ^
a.cc:12:23: error: 'min' was not declared in this scope
   12 |                 ans = min(ans, dp(l, i, x, x + y) + dp(i, r, x + y, y) + a[i] * (x + y));
      |                       ^~~
a.cc: In function 'int main()':
a.cc:18:26: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   18 |         for(register int i = 1; i <= n; i++) scanf("%lld", &a[i]);
      |                          ^
Language: C++

#include <cstdio>
#include <iostream>

using namespace std；

int a[20] , n;

#define ll long long

ll f(int l , int r , int x , int y){
	ll ans = 1e8;
	if(r - l <= 1)
		return 0;
	for(int i = l + 1; i <= r - 1; i++)	
		ans = min(ans , f(l , i , x , x + y) + f(i , r , x + y , y) + a[i] * (x + y));
	return ans;
}

int main(){
	cin >> n;
	for(int i = 1; i <= n; i++)
		cin >> a[i];
	cout << a[1] + a[n] + f(1 , n , 1 , 1) << endl;
	return 0;
}

Compiler output:
a.cc:4:17: error: 'std\U0000ff1b' is not a namespace-name
    4 | using namespace std；
      |                 ^~~~~
a.cc:4:22: error: expected ';' before 'int'
    4 | using namespace std；
      |                      ^
      |                      ;
    5 | 
    6 | int a[20] , n;
      | ~~~                   
a.cc: In function 'long long int f(int, int, int, int)':
a.cc:15:23: error: 'min' was not declared in this scope; did you mean 'std::min'?
   15 |                 ans = min(ans , f(l , i , x , x + y) + f(i , r , x + y , y) + a[i] * (x + y));
      |                       ^~~
      |                       std::min
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: 'std::min' declared here
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
a.cc: In function 'int main()':
a.cc:20:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   20 |         cin >> n;
      |         ^~~
      |         std::cin
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:23:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   23 |         cout << a[1] + a[n] + f(1 , n , 1 , 1) << endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:23:51: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   23 |         cout << a[1] + a[n] + f(1 , n , 1 , 1) << endl;
      |                                                   ^~~~
      |                                                   std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~