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

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N=2e5;
int par[N],rank[N];
int Find(int x)
{
	if(par[x]!=x) par[x]=Find(par[x]);
	return par[x];
}
void Union(int a,int b)
{
	int x=Find(a),y=Find(b);
	if(x==y) return;
	if(rank[x]<rank[y]) par[x]=y;
	else if(rank[x]>rank[y]) par[y]=x;
	else
	{
		par[y]=x;
		rank[x]++;
	}
}
int main()
{
	int n,m;
	cin>>n>>m;
	for(int i=0;i<n;i++) par[i]=i,ran[i]=0;
	for(int i=0;i<m;i++)
	{
		int a,b;
		cin>>a>>b;
		a--,b--;
		Union(a,b);
	}
	sort(par,par+n);
	int c=0,i=0;
	while(i<n)
	{
		int tc=1;
		i++;
		while(i<n&&par[i]==par[i-1]) i++,tc++;
		c=max(c,tc);
	}
	cout<<c;
	return 0;
}


Compiler output:
a.cc: In function 'void Union(int, int)':
a.cc:15:12: error: reference to 'rank' is ambiguous
   15 |         if(rank[x]<rank[y]) par[x]=y;
      |            ^~~~
In file included from /usr/include/c++/14/bits/stl_pair.h:60,
                 from /usr/include/c++/14/bits/stl_algobase.h:64,
                 from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/type_traits:1437:12: note: candidates are: 'template<class> struct std::rank'
 1437 |     struct rank
      |            ^~~~
a.cc:5:12: note:                 'int rank [200000]'
    5 | int par[N],rank[N];
      |            ^~~~
a.cc:15:20: error: reference to 'rank' is ambiguous
   15 |         if(rank[x]<rank[y]) par[x]=y;
      |                    ^~~~
/usr/include/c++/14/type_traits:1437:12: note: candidates are: 'template<class> struct std::rank'
 1437 |     struct rank
      |            ^~~~
a.cc:5:12: note:                 'int rank [200000]'
    5 | int par[N],rank[N];
      |            ^~~~
a.cc:16:17: error: reference to 'rank' is ambiguous
   16 |         else if(rank[x]>rank[y]) par[y]=x;
      |                 ^~~~
/usr/include/c++/14/type_traits:1437:12: note: candidates are: 'template<class> struct std::rank'
 1437 |     struct rank
      |            ^~~~
a.cc:5:12: note:                 'int rank [200000]'
    5 | int par[N],rank[N];
      |            ^~~~
a.cc:16:25: error: reference to 'rank' is ambiguous
   16 |         else if(rank[x]>rank[y]) par[y]=x;
      |                         ^~~~
/usr/include/c++/14/type_traits:1437:12: note: candidates are: 'template<class> struct std::rank'
 1437 |     struct rank
      |            ^~~~
a.cc:5:12: note:                 'int rank [200000]'
    5 | int par[N],rank[N];
      |            ^~~~
a.cc:20:17: error: reference to 'rank' is ambiguous
   20 |                 rank[x]++;
      |                 ^~~~
/usr/include/c++/14/type_traits:1437:12: note: candidates are: 'template<class> struct std::rank'
 1437 |     struct rank
      |            ^~~~
a.cc:5:12: note:                 'int rank [200000]'
    5 | int par[N],rank[N];
      |            ^~~~
a.cc: In function 'int main()':
a.cc:27:39: error: 'ran' was not declared in this scope; did you mean 'tan'?
   27 |         for(int i=0;i<n;i++) par[i]=i,ran[i]=0;
      |                                       ^~~
      |                                       tan
Language: C++

#include<bits/stdc++.h>
using namespace std;
vector<int> e[200005];
int n,m,ans;bool vis[200005];
int bfs(int x)
{
	queue<int> q;int num=1;
	q.push(x);++vis[x];
	while(!q.empty())
	{
		int k=q.front();q.pop();
		for(int i=0;i<e[k].size();++i)
		 if(!vis[e[k][i]])
		 {
		 	vis[e[k][i]]=1;++num;
		 	q.push(e[k][i]);
		 }
	}
	if(num>ans) ans=num;
}
int main()
{
	cin>>n>>m;
	for(int i=0;i<m;++i)
	{
		int x,y;
		cin>>x>>y;
		e[x].push_back(y);
		e[y].push_back(x);
	}
	for(int i=1;i<=n;++i)
	 if(!vis[i]) bfs(i);
	cout<<ans;
	return 0;
}

Compiler output:
a.cc: In function 'int bfs(int)':
a.cc:8:26: error: use of an operand of type 'bool' in 'operator++' is forbidden in C++17
    8 |         q.push(x);++vis[x];
      |                     ~~~~~^
a.cc:20:1: warning: no return statement in function returning non-void [-Wreturn-type]
   20 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int N=2e5;
int par[N],ran[N];
int Find(int x)
{
	if(par[x]!=x) par[x]=Find(par[x]);
	return par[x];
}
void Union(int a,int b)
{
	int x=Find(a),y=Find(b);
	if(x==y) return;
	if(ran[x]<ran[y]) par[x]=y;
	else if(ran[x]>ran[y]) par[y]=x;
	else
	{
		par[y]=x;
		ran[x]++;
	}
}
int main()
{
	int n,m;
	cin>>n>>m;
	for(int i=0;i<n;i++) par[i]=i,rank[i]=0;
	for(int i=0;i<m;i++)
	{
		int a,b;
		cin>>a>>b;
		a--,b--;
		Union(a,b);
	}
	sort(par,par+n);
	int c=0,i=0;
	while(i<n)
	{
		int tc=1;
		i++;
		while(i<n&&par[i]==par[i-1]) i++,tc++;
		c=max(c,tc);
	}
	cout<<c;
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:27:43: error: missing template arguments before '[' token
   27 |         for(int i=0;i<n;i++) par[i]=i,rank[i]=0;
      |                                           ^
Language: C++

#include <cstdio>
using namespace std;

const int MAX = 2e5+10;
int fa[MAX];
int fri[MAX], g[MAX];

int Find(int x){
    if (x == fa[x]) return x;
    return fa[x] = Find(fa[x]);
}

void unite(int x, int y){
    int rx = Find(x);
    int ry = Find(y);
    if (rx == ry) return;
    fa[ry] = rx;
}

int main(){
    for (int i = 0; i < MAX; i++) fa[i] = i;
    int n, m; scanf("%d%d", &n, &m);
    for (int i = 0; i < m; i++){
        int a, b; scanf("%d%d", &a, &b);
        if (a > b) swap(a, b);
        unite(a, b);
    }
    int t = 0, Mx = 0;
    for (int i = 1; i <= n; i++){
        if (!g[Find(i)]) g[Find(i)] = ++t;
        Mx = max(Mx, ++fri[g[Find(i)]]);
    }
    printf("%d\n", Mx);
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:25:20: error: 'swap' was not declared in this scope
   25 |         if (a > b) swap(a, b);
      |                    ^~~~
a.cc:31:14: error: 'max' was not declared in this scope
   31 |         Mx = max(Mx, ++fri[g[Find(i)]]);
      |              ^~~
Language: C

#include <bits/stdc++.h>
using namespace std;
static const int NIL = -1;
static const int MAX = 200000;

int N;
int ans = 0;
vector<vector<int>> f(MAX+1);
vector<int> color(MAX+1);

void dfs(int r,int c) {
    int cnt = 1;
    stack<int> S;
    S.push(r);
    color.at(r) = c;
    while (!S.empty()) {
        int u = S.top();
        S.pop();
        for (int i=0;i<f.at(u).size();i++) {
            int v = f.at(u).at(i);
            if (color.at(v) == NIL) {
                color.at(v) = c;
                S.push(v);
                cnt++;
            }
        }
    }
    ans = max(ans,cnt);
}

void assigncolor() {
    int id = 0;
    for (int i=1;i<N+1;i++) {
        color.at(i) = NIL;
    }
    for (int u=1;u<N+1;u++) {
        if (color.at(u) == NIL) dfs(u,id++);
    }
}

int main() {
    int M,a,b;
    cin >>N >> M;
    
    for (int i=0;i<M;i++) {
        cin >> a >> b;
        f.at(a).push_back(b);
        f.at(b).push_back(a);
    }
    assigncolor();
    cout << ans << endl;
    
}

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>
#define LL long long
using namespace std;
const int N=2e6+1000;
const LL P=1e9+7;
int read(){
    int x=0,f=1;char ch=getchar();
    while(ch<'0'||ch>'9'){if(ch=='-')f=-1;ch=getchar();}
    while(ch>='0'&&ch<='9'){x=x*10+ch-'0';ch=getchar();}
    return x*f;
}
void print(int x){
    if(x>9) print(x/10);
    putchar(x%10+'0');
}
int n,m;
int f[N],s[N];
int find(int x){
	if(f[x]==x) return x;
	else return f[x]=find(f[x]);
}
int main(){
	scanf("%d%d",&n,&m);
	for(int i=1;i<=n;++i){
		f[i]=i;
		s[i]=1;
	}
	int u,v;
	for(int i=1;i<=m;++i){
		scanf("%d%d",&u,&v);
		u=find(u);v=find(v);
		if(u==v) continue;
		f[u]=v;
		sz[v]+=sz[u];
	}
	int ans=0;
	for(int i=1;i<=n;++i){
		u=find(i);
		ans=max(ans,sz[u]);
	}
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:17: error: 'sz' was not declared in this scope; did you mean 's'?
   34 |                 sz[v]+=sz[u];
      |                 ^~
      |                 s
a.cc:39:29: error: 'sz' was not declared in this scope; did you mean 's'?
   39 |                 ans=max(ans,sz[u]);
      |                             ^~
      |                             s
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define int long long int
#define endl "\n"
#define F first
#define S second
#define mod 1000000007
#define pb push_back
#define FOR(i,a,n) for(int i=a;i<n;i++)
#define REV(i,a,n) for(int i=a;i>=n;i--)
#define all(a) a.begin(),a.end()
const int NUM = 2e5 + 5;
vector<int> graph[NUM];
bool visited[NUM];
int comp = 0;
void dfs(int node){
    visited[node] = 1;
    comp++;
    for(auto x:graph[node])
        if(!visited[x])
            dfs(x);
}
int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    int num_tests=1; 
    //cin >> num_tests;
    while(num_tests-->0){
        int n,m; cin >> n >> m;
        map<pair<int,int>,bool> mapit;
        FOR(i,0,m){
            int x,y; cin >> x >> y;
            if(mapit[{x,y}] or mapit[{y,x}]) continue;
            grapax].pb(y);
            graph[y].pb(x);
            mapit[{x,y}] = 1;
            mapit[{y,x}] = 1;
        }
        int groups = 0;
        FOR(i,1,n+1){
            if(!visited[i]){
                comp = 0;
                dfs(i);
                groups = max(groups,comp);
            }
        }
        cout << groups ;
    }    
}

Compiler output:
a.cc: In function 'int32_t main()':
a.cc:33:13: error: 'grapax' was not declared in this scope; did you mean 'graph'?
   33 |             grapax].pb(y);
      |             ^~~~~~
      |             graph
Language: C++

#include <bits/stdc++.h>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <cstring>
#include <chrono>
#include <complex>
#define endl "\n"
#define int long long int
#define vi vector<int>
#define vll vector<ll>
#define vvi vector < vi >
#define pii pair<int,int>
#define pll pair<long long, long long>
#define mod 1000000007
#define inf 1000000000000000001;
#define all(c) c.begin(),c.end()
#define mp(x,y) make_pair(x,y)
#define mem(a,val) memset(a,val,sizeof(a))
#define eb emplace_back
#define f first
#define s second
#define pb push_back

using namespace std;
void lala()
{
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
}
int powr(int x,int y,int z)
{
	int	ans=1;
	int square=x;
	if(y==0)
	    return 1;
	while(y!=0)
	{
	    if(y%2)
	        ans=ans*square;
	    square=(square*square)%z;
	    y=y/2;
	    if(ans>z)
	        ans=ans%z;
	}
	return ans;
}
int32_t main()
{
std::ios::sync_with_stdio(false);

#ifndef ONLINE_JUDGE
freopen("inputf.txt", "r", stdin);
freopen("outputf.txt", "w", stdout);
#endif
int n, m;
cin >> n >> m;
vector<int>v[n + 1];
for (int i = 0; i < m; i++)
{
int x, y;
cin >> x >> y;
v[x].pb(y); v[y].pb(x);
}


int vis[n + 1] = {};

int col = 1;
for (int i = 1; i <= n; i++)
{
if (!vis[i])
{
dfs(v, i, vis, col);
col++;
}
}

map<int, int>ma;

for (int i = 1; i <= n; i++)
ma[vis[i]]++;
int res = 0;
for (auto i : ma)
{
res = max(res, i.s);
}
cout << res << endl;
return 0;
}


Compiler output:
a.cc: In function 'int32_t main()':
a.cc:73:1: error: 'dfs' was not declared in this scope; did you mean 'ffs'?
   73 | dfs(v, i, vis, col);
      | ^~~
      | ffs
Language: C

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

#define endl "\n"
#define ll long long
#define F first
#define S second
#define pb push_back
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define mll unordered_map<ll,ll>
#define dec(v) sort(v.rbegin(),v.rend());
#define REP(i, n) for (int i = 0; i < (n); i++)
typedef vector<int> vi;
typedef pair<int, int> pii;
typedef vector<vi> vvi;
typedef vector<pii> vpii;
typedef vector<ll> vll;

#define deb(x) cout << ">" << #x << '=' << x << endl;
#define setbits(n) __builtin_popcountll(n)
#define done {cout<<"-1"<<endl; return;}

#define inf INT_MAX
#define ninf INT_MIN
const ll N = 2e5 + 5;
#define MOD 1000000007

vector<int> adj[N];
vector<bool> visited(N);
int ans;

void dfs(int node) {
   ans++;
   visited[node] = true;
   for (auto it : adj[node]) {
      if (!visited[it]) dfs(it);
   }
}
void solve()
{
   int n, e;
   cin >> n >> e;
   ans = 0;
   for (int i = 0; i <= n; i++) {
      adj[i].clear();
      visited[i] = false;
   }
   map<pair<int, int>, bool>mp;
   for (int i = 0; i < e; i++) {
      int a, b;
      cin >> a >> b;
      if (mp[ {min(a, b), max(a, b)}] == true) {
         //
      }
      else {
         mp[ {a, b}] = true;
         adj[a].pb(b);
         adj[b].pb(a);
      }
   }

   int m = 0;

   for (int i = 1; i <= n; i++) {
      ans = 0;
      if (!visited[i]) {
         dfs(i);
      }
      m = max(m, ans);
   }
   cout << m << endl;

}
int main()
{
   ios_base::sync_with_stdio(false);
   cin.tie(0); cout.tie(0);
#ifndef ONLINE_JUDGE
   freopen("inputc.txt", "r", stdin);
   freopen("outputc.txt", "w", stdout);
#endif
   int t = 1;
   //cin >> t;
   while (t--)  solve();
   cerr << "Time : " << 1000 * ((double)clock()) / (double)CLOCKS_PER_SEC << "ms\n";
   return 0;
}


Compiler output:
main.c:1:9: fatal error: bits/stdc++.h: No such file or directory
    1 | #include<bits/stdc++.h>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Queue;
import java.util.StringTokenizer;

public class atcoder_177_beg {
	
	static int mx;
	static boolean[] visit;
	static ArrayList<ArrayList<Integer>> adj;
	
	public static void bfs(int s) {
		Queue<Integer> q=new LinkedList<Integer>();
		q.add(s);
		visit[s]=true;
		
		int ctr=1;
		
		while(!q.isEmpty()) {
			int u=q.poll();
			
			for(int e=0;e<adj.get(u).size();e++) {
				int v=adj.get(u).get(e);
				if(!visit[v]) {
					visit[v]=true;
					ctr++;
				}
			}
		}
		
		mx=Math.max(mx, ctr);
	}
	
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		
		Rf.init(System.in);
		PrintWriter pw=new PrintWriter(System.out);
		
		int N=Rf.nextInt();
		int M=Rf.nextInt();
		
		mx=1;
		adj=new ArrayList<ArrayList<Integer>>();
		for(int r=0;r<N;r++) {
			adj.add(new ArrayList<Integer>());
		}
		
		for(int w=0;w<M;w++){
			int A=Rf.nextInt();
			int B=Rf.nextInt();
			A--;
			B--;
			adj.get(A).add(B);
			adj.get(B).add(A);
		}	
		
		visit=new boolean[N];
		Arrays.fill(visit,false);
		
		for(int w=0;w<N;w++) {
			if(!visit[w]) {
				bfs(w);
			}
		}
		
		pw.println(mx);
		pw.close();
		
	}

}

/** Class for buffered reading int and double values */
class Rf {
	static BufferedReader reader;
	static StringTokenizer tokenizer;

	/** call this method to initialize reader for InputStream */
	static void init(InputStream input) {
		reader = new BufferedReader(new InputStreamReader(input));
		tokenizer = new StringTokenizer("");
	}

	/** get next word */
	static String next() throws IOException {
		while (!tokenizer.hasMoreTokens()) {
			// TODO add check for eof if necessary
			tokenizer = new StringTokenizer(reader.readLine());
		}
		return tokenizer.nextToken();
	}

	static int nextInt() throws IOException {
		return Integer.parseInt(next());
	}

	static double nextDouble() throws IOException {
		return Double.parseDouble(next());
	}
	
	static long nextLong() throws IOException {
		return Long.parseLong(next());
	}
}


Compiler output:
Main.java:12: error: class atcoder_177_beg is public, should be declared in a file named atcoder_177_beg.java
public class atcoder_177_beg {
       ^
1 error
Language: C++

#include <iostream>
using namespace std;

int n, m, p[200005], ans = 1;

int pa(int x){
    if (p[x] < 0) return x;
    return pa(p[x]);
}

int main() {
    cin >> n >> m;
    memset(p, -1, sizeof(p));
    for (int i = 0, a, b; i < m; i++){
        cin >> a >> b;
        int x = pa(a), y = pa(b);
        if (x != y){
            p[x] += p[y];
            p[y] = x;
            ans = max(ans, -p[x]);
        }
    }
    cout << ans << "\n";
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: 'memset' was not declared in this scope
   13 |     memset(p, -1, sizeof(p));
      |     ^~~~~~
a.cc:2:1: note: 'memset' is defined in header '<cstring>'; this is probably fixable by adding '#include <cstring>'
    1 | #include <iostream>
  +++ |+#include <cstring>
    2 | using namespace std;
Language: C++

#include<bits/stdc++.h>
#define pii pair<int, int>
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
using namespace std;

const int N = 200005;
vector<int> adj[N];
bool visit[N];
int maxi = 0;
int n, m;
set<pii> st;
int sz;

void dfs(int v) {
	sz++;
	visit[v] = true;
	for (int i = 0; i < adj[v].size(); i++) {
		if (!visit[adj[v][i]]) {
			dfs(adj[v][i]);
		}
	}
}

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

	cin >> n >> m;
	for (int i = 0; i < m; i++) {
		int k, l;
		cin >> k >> l;
		if (k > l) swap(k, l);
		if (st.find(mp(k, l)) == st.end()) {
			st.insert(mp(k, l));
			adj[k].pb(l);
			adj[l].pb(k);
		}
	}

	for (int i = 1; i <= n; i++) {
		if (visit[i] == false) {
			sz = 0;
			dfs(i);
			maxi = max(sz, maxi);
		}
	}

	cout << maxi << '\n';


	

}

Compiler output:
a.cc: In function 'void dfs(int)':
a.cc:20:9: error: reference to 'visit' is ambiguous
   20 |         visit[v] = true;
      |         ^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:80,
                 from a.cc:1:
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:12:6: note:                 'bool visit [200005]'
   12 | bool visit[N];
      |      ^~~~~
a.cc:22:22: error: reference to 'visit' is ambiguous
   22 |                 if (!visit[adj[v][i]]) {
      |                      ^~~~~
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:12:6: note:                 'bool visit [200005]'
   12 | bool visit[N];
      |      ^~~~~
a.cc: In function 'int main()':
a.cc:46:21: error: reference to 'visit' is ambiguous
   46 |                 if (visit[i] == false) {
      |                     ^~~~~
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:12:6: note:                 'bool visit [200005]'
   12 | bool visit[N];
      |      ^~~~~
Language: C++

#include <iostream>

void addinfo(int (&fr)[200000], int a, int b)
{
  std::cout << a << " "<< b << std::endl;
}

int main()
{
  int n, m;
  std::cin >> n >> m;
  int a[200000], b[200000];
  for (int i=0;i<m;++i)
  {
    std::cin >> a[i] >> b[i];
  }
  int fr[200000] = {}
  for (int i=0;i<n;++i)
  {
    fr[i] = i+1;
  }
  for (int i=0;i<m;++i)
  {
    addinfo(fr, a[i], b[i]);
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:3: error: expected ',' or ';' before 'for'
   18 |   for (int i=0;i<n;++i)
      |   ^~~
a.cc:18:16: error: 'i' was not declared in this scope
   18 |   for (int i=0;i<n;++i)
      |                ^
Language: C++

#include <bits/stdc++.h>

#include <debug.h>
using namespace std;

const int MAX = 2 * 100010;

vector<vector<int> > g(MAX);
vector<int> used(MAX);

int dfs(int s){
	used[s] = true;
	int x = 1;
	for(int v : g[s]){
		if(!used[v]){
			x += dfs(v);
		}
	}
	return x;
}

int main(){
	int n,m;
	cin >> n >> m;
	for(int i = 0; i < m; i++){
		int u,v; cin >> u >> v;
		g[u].push_back(v);
		g[v].push_back(u);
	}	
	vector<int> cm;
	for(int i = 1; i <= n; i++ ){
		if(!used[i]){
			cm.push_back(dfs(i));
		}
	}
	sort(cm.begin(),cm.end());
	int res = 0;
	res+=cm[0];
	for(int i = 1; i < cm.size(); i++){
		res+= cm[i] - cm[i-1];
	}
	cout << res << "\n";
	return 0;
}


Compiler output:
a.cc:3:10: fatal error: debug.h: No such file or directory
    3 | #include <debug.h>
      |          ^~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>
#include<functional>
using namespace std;
#define ll long long int
#define ld long double
using namespace __gnu_pbds;
typedef tree<ll,null_type,less<ll>,rb_tree_tag,
tree_order_statistics_node_update> in_set;
#define rep(n) for(ll i=0;i<(n);i++)
#define jrep(n) for(ll j=0;j<(n);j++)
#define krep(n) for(ll k=0;k<(n);k++)
#define all(a) (a).begin(), (a).end()
#define dpp(a) cout<<(a).first<<" "<<(a).second<<endl;
#define append push_back
#define mod 1000000007
#define ff first
#define ss second
#define ffast ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define fast ios::sync_with_stdio(0);
ll pw(ll x,ll y,ll p=mod){ll r=1; x=x%p;while(y>0){ if(y&1)r=(r*x)%p;
y=y>>1;x=(x*x)%p;} return r; } 

vector<ll> graph[200005];
vector<ll> visit(200005,false);
vector<ll> vrr;
void dfs(ll a, vector<ll> &visit){
    if(!visit[a]){
        vrr.back()++; visit[a]=true;
        for(auto i:graph[a]) dfs(i,visit);
    }
}
void solve(ll ts){
    ll n,m; cin>>n>>m; set<ll> st;
    rep(m){
        ll a,b; cin>>a>>b; graph[a].append(b); graph[b].append(a);
    }
    rep(n){
        if(!visit[i+1]){
            vrr.append((ll)0);
            dfs(i+1,visit);
        }
    }
    cout<<(*max_element(all(vrr)))<<endl;
} 
int main(){
    ffast
    ll t=1;
//    cin>>t;
    rep(t) solve(i+1);
}
 
 
// *p.find_by_order(n) : nth value (0 indexed)
// p.order_of_key(7): index of 7 (0 indexed)


Compiler output:
a.cc: In function 'void solve(long long int)':
a.cc:40:13: error: reference to 'visit' is ambiguous
   40 |         if(!visit[i+1]){
      |             ^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:80,
                 from a.cc:1:
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:26:12: note:                 'std::vector<long long int> visit'
   26 | vector<ll> visit(200005,false);
      |            ^~~~~
a.cc:42:21: error: reference to 'visit' is ambiguous
   42 |             dfs(i+1,visit);
      |                     ^~~~~
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:26:12: note:                 'std::vector<long long int> visit'
   26 | vector<ll> visit(200005,false);
      |            ^~~~~
Language: C++

#include <bits/stdc++.h>
const int MAX=2e5+10;
const int modn=1e9+7;
typedef long long ll ;
#define int ll
#define endl '\n'
#define cwk     freopen("D:\\workplace\\CLion\\in.in","r",stdin),freopen("D:\\workplace\\CLion\\out.out","w",stdout)
using namespace std;
int n,m,a,b;
int s[MAX];
int find_(int x){
    if(s[x]!=x) s[x]=find_(s[x]);
    return s[x];
}
void union_(int x,int y){
    x=find_(x);
    y=find_(y);
    if(x!=y)
        s[x]=s[y];
}
vector<int>v[MAX];
void solve(){
    for(int i=0;i<MAX;i++)
        s[i]=i;
    cin>>n>>m;
    while(m--){
        cin>>a>>b;
        union_(a,b);
    }
    int maxn=0;
    for(int i=1;i<=n;i++) {
        s[i]=find_(s[i]);
        v[s[i]].push_back(i);
        maxn=max(maxn,1LL*v[s[i]].size());
    }
    cout<<maxn;

}
signed main() {
    //ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
    //cwk;
    int _=1;
    //cin>>_;
    while(_--){
        solve();
    }
    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:34:17: error: no matching function for call to 'max(ll&, long long unsigned int)'
   34 |         maxn=max(maxn,1LL*v[s[i]].size());
      |              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:34:17: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long long unsigned int')
   34 |         maxn=max(maxn,1LL*v[s[i]].size());
      |              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:34:17: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   34 |         maxn=max(maxn,1LL*v[s[i]].size());
      |              ~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int N=2e5+5;
int n,m,ans,xx,yy,x,y;
int f[N],size[N]; 

int find(int x)
{
	if (f[x]==x) return x;
	return f[x]=find(f[x]);
}

int main(){
	scanf("%d%d",&n,&m);
	for (register int i=1; i<=n; ++i) f[i]=i,size[i]=1;
	for (register int i=1; i<=m; ++i)
	{
		scanf("%d%d",&x,&y);
	//	xx=find(x); yy=find(y);
		//if (xx!=yy)
		//{
		//	f[xx]=yy;
		//	size[yy]+=size[xx];
		//}
	}
	//for (register int i=1; i<=n; ++i) 
	//if (find(i)==i) ans=max(ans,size[i]);
	printf("%d\n",ans);
return 0;	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:27: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   15 |         for (register int i=1; i<=n; ++i) f[i]=i,size[i]=1;
      |                           ^
a.cc:15:50: error: reference to 'size' is ambiguous
   15 |         for (register int i=1; i<=n; ++i) f[i]=i,size[i]=1;
      |                                                  ^~~~
In file included from /usr/include/c++/14/string:53,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/range_access.h:272:5: note: candidates are: 'template<class _Tp, long unsigned int _Nm> constexpr std::size_t std::size(const _Tp (&)[_Nm])'
  272 |     size(const _Tp (&)[_Nm]) noexcept
      |     ^~~~
/usr/include/c++/14/bits/range_access.h:262:5: note:                 'template<class _Container> constexpr decltype (__cont.size()) std::size(const _Container&)'
  262 |     size(const _Container& __cont) noexcept(noexcept(__cont.size()))
      |     ^~~~
a.cc:5:10: note:                 'int size [200005]'
    5 | int f[N],size[N];
      |          ^~~~
a.cc:16:27: warning: ISO C++17 does not allow 'register' storage class specifier [-Wregister]
   16 |         for (register int i=1; i<=m; ++i)
      |                           ^
Language: C++


/**
 *    Coded by : lucky_21
 *               --------Lokesh Singh
**/

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

#include<ext/pb_ds/tree_policy.hpp>
#include<ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T> using oset=tree<T,null_type,less<T>,rb_tree_tag,tree_order_statistics_node_update>;

#define     F           first
#define     S           second
#define     pb          push_back
#define     lb          lower_bound
#define     ub          upper_bound
#define     pii         pair<int,int>
#define     all(x)      x.begin(),x.end()
#define     fix         fixed<<setprecision(10)
#define     rep(i,a,b)  for(int i=int(a);i<=int(b);i++)
#define     repb(i,b,a) for(int i=int(b);i>=int(a);i--)
#define     FastIO      ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0)

typedef double db;
typedef long long ll;

const int N=2e5+5;
const int mod=1e9+7;

int n,m,visit[N];
set<int>v[N];
int dfs(int x){
    int cnt=1;
    visit[x]=1;
    for(int u:v[x]) if(!visit[u]) cnt+=dfs(u);
    return cnt;
}
signed main(){
    FastIO;
    cin>>n>>m;
    rep(i,1,m){
        int a,b;
        cin>>a>>b;
        v[a].insert(b);
        v[b].insert(a);
    }
    int ans=0;
    rep(i,1,n) if(!visit[i]) ans=max(ans,dfs(i));
    cout<<ans;
    return 0;
}


Compiler output:
a.cc: In function 'int dfs(int)':
a.cc:37:5: error: reference to 'visit' is ambiguous
   37 |     visit[x]=1;
      |     ^~~~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:80,
                 from a.cc:7:
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:33:9: note:                 'int visit [200005]'
   33 | int n,m,visit[N];
      |         ^~~~~
a.cc:38:25: error: reference to 'visit' is ambiguous
   38 |     for(int u:v[x]) if(!visit[u]) cnt+=dfs(u);
      |                         ^~~~~
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:33:9: note:                 'int visit [200005]'
   33 | int n,m,visit[N];
      |         ^~~~~
a.cc: In function 'int main()':
a.cc:51:20: error: reference to 'visit' is ambiguous
   51 |     rep(i,1,n) if(!visit[i]) ans=max(ans,dfs(i));
      |                    ^~~~~
/usr/include/c++/14/variant:1855:5: note: candidates are: 'template<class _Visitor, class ... _Variants> constexpr std::__detail::__variant::__visit_result_t<_Visitor, _Variants ...> std::visit(_Visitor&&, _Variants&& ...)'
 1855 |     visit(_Visitor&& __visitor, _Variants&&... __variants)
      |     ^~~~~
a.cc:33:9: note:                 'int visit [200005]'
   33 | int n,m,visit[N];
      |         ^~~~~
Language: C++

#include <bits/stdc++.h>
#define NMAX 300005

using namespace std;
using ll = long long;
using pll = pair<ll,ll>;
const ll MOD=1e9+7;
vector<ll> edg[NMAX];
bitset<NMAX> visited;
void dfs(ll node){
    visited[node]=1;
    for(auto it : edg[node]){
        if(!visited[it]){
            visited[it]=1;
            dfs(it);
        }
    }
}
int main()
{
    ll ans=0,prevCnt=0;
    ll n,m;
    cin>>n>>m;
    for(ll i=0;i<m;i++){
        ll a,b;
        cin>>a>>b;
        edg[a].push_back(b);
        edg[b].push_back(a);
    }
    for(ll i=1;i<=n;i++){
        if(!visited[i]){
            dfs(i);
            ans=max(ans,visited.count()-prevCnt);
            prevCnt=visited.count();
        }
    }
    cout<<ans;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:33:20: error: no matching function for call to 'max(ll&, long long unsigned int)'
   33 |             ans=max(ans,visited.count()-prevCnt);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:33:20: note:   deduced conflicting types for parameter 'const _Tp' ('long long int' and 'long long unsigned int')
   33 |             ans=max(ans,visited.count()-prevCnt);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:33:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long long int'
   33 |             ans=max(ans,visited.count()-prevCnt);
      |                 ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: Java

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class fourth {
    static int[] parent;
    static int[] size;

    static void make_set(int v) {
        parent[v] = v;
        size[v] = 1;
    }
    static int find_set(int v) {
        if (v == parent[v])
            return v;
        return parent[v] = find_set(parent[v]);
    }
    static void union_sets(int a, int b) {
        a = find_set(a);
        b = find_set(b);
        if (a != b) {
            if (size[a] < size[b]) {
                int temp = a;
                a = b;
                b = temp;
            }
            parent[b] = a;
            size[a] += size[b];
        }
    }

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] s = br.readLine().split(" ");
        int n = Integer.parseInt(s[0]);
        int m = Integer.parseInt(s[1]);

        parent = new int[n];
        size = new int[n];

        for (int i = 0; i < n; i++) {
            make_set(i);
        }

        while(m-->0){
            s = br.readLine().split(" ");
            int a = Integer.parseInt(s[0]);
            int b = Integer.parseInt(s[1]);

            union_sets(a-1,b-1);
        }
        int ans = Integer.MIN_VALUE;

        for (int i = 0; i < n; i++) {
            ans = Math.max(ans, size[i]);
        }
        System.out.println(ans);
    }
}


Compiler output:
Main.java:5: error: class fourth is public, should be declared in a file named fourth.java
public class fourth {
       ^
1 error
Language: C++

#include<bits/stdc++.h>
using namespace std;
const int MX=1e6+5;
set<int> s;
int n,x,k,y,f[MX];
bool b;
int main()
{
    ios_base::sync_with_studio(false);
    cin.tie(nullptr);
    for(int i=0; i<MX; i++) f[i]=i;
    for(int i=2; i*i<MX; i++){
        if(f[i]!=i) continue;
        for(int j=i*i; j<MX; j+=i){
            if(f[j]==j) f[j]=i;
        }
    }
    cin >> n;
    for(int i=0; i<n; i++){
        cin >> x;
        y=__gcd(y,x);
        while(x>1){
            k=f[x];
            if(s.find(k)!=s.end()) b=true;
            s.insert(k);
            while(x%k==0) x/=k;
        }
    }
    if(!b){
        cout << "pairwise coprime";
        return 0;
    }
    if(y>1) cout << "not coprime";
    else cout << "setwise coprime";
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:15: error: 'sync_with_studio' is not a member of 'std::ios_base'
    9 |     ios_base::sync_with_studio(false);
      |               ^~~~~~~~~~~~~~~~
Language: C++

#include<iostream>
#include<cstdio>
#include<algorithm>
#define N 1000001
using namespace std;
int n,m,mx,now,time,a[N];
bool v[N];
int gcd(int a,int b){
	return b==0?a:gcd(b,a%b);
}
int main(){
	scanf("%d",&n);
	for(int i=1;i<=n;i++){
		scanf("%d",&a[i]);
		mx=max(a[i],mx);
		v[a[i]]=1;
	}
	sort(a+1,a+1+n);
	now=gcd(a[1],a[2]);
	for(int i=3;i<=n;i++) now=gcd(now,a[i]);
	if(now!=1){
		printf("not coprime");
		return 0;
	}
	for(int i=2;i<=mx;i++){
		long long now=i;
		int num=0;
		for(int j=2;;j++){
			now=i*j;
			time++;
			if(now>mx) break;
			if(v[now]) num++;
			if(time>80000000){
				printf("pairwise coprime");
				return 0;
			}
			if(num==2){
				printf("setwise coprime");
				return 0;
			}
		}
	}
	printf("pairwise coprime");
	return 0;
}

Compiler output:
a.cc:6:16: error: 'int time' redeclared as different kind of entity
    6 | int n,m,mx,now,time,a[N];
      |                ^~~~
In file included from /usr/include/pthread.h:23,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr-default.h:35,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/gthr.h:157,
                 from /usr/include/c++/14/ext/atomicity.h:35,
                 from /usr/include/c++/14/bits/ios_base.h:39,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/time.h:76:15: note: previous declaration 'time_t time(time_t*)'
   76 | extern time_t time (time_t *__timer) __THROW;
      |               ^~~~
a.cc: In function 'int main()':
a.cc:30:25: warning: ISO C++ forbids incrementing a pointer of type 'time_t (*)(time_t*) noexcept' {aka 'long int (*)(long int*) noexcept'} [-Wpointer-arith]
   30 |                         time++;
      |                         ^~~~
a.cc:30:29: error: lvalue required as increment operand
   30 |                         time++;
      |                             ^~
a.cc:33:32: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   33 |                         if(time>80000000){
      |                            ~~~~^~~~~~~~~
Language: C++

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

#define ll long long
#define rep(i,n) for(int i = 0;i < (n); i++)
#define mod 1000000007
#define ma 1000005

int gcd(ll, ll);

int main() {
	ll n;
	ll x;
	ll gc = 0;
	bool pc = true;
	cin >> n;
	vector<ll> a(n);
	vector<ll> c(ma);
	rep(i, n) {
		cin >> a[i];
		c[a[i]]++;
	}
	for (ll i = 2; i < ma; i++) {
		int count = 0;
		for (ll j = i; j < ma; j += i) {
			count += c[j];
		}
		if (count > 1) {
			pc = false;
		}
	}
	if (pc) {
		cout << "pairwise coprime" << endl;
		return 0;
	}
	rep(i, n)gc = gcd(gc, a[i]);
	
	if (gc == 1)cout << "setwise coprime" << endl;
	else cout << "not coprime" << endl;
	return 0;
}

/*
int gcd(ll a, ll b) {
	if (a % b == 0)return b;
	else gcd(b, a % b);
}
*/

Compiler output:
/usr/bin/ld: /tmp/ccD6KECl.o: in function `main':
a.cc:(.text+0x1d8): undefined reference to `gcd(long long, long long)'
collect2: error: ld returned 1 exit status
Language: C++


#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll,ll>;
using vvll = vector<vector<ll>>;
using vll = vector<ll>;
const ll MOD=9998903;



ll GCD(ll a, ll b) {
    if (b == 0) return a;
    else return GCD(b, a % b);
}

void solve() {
	ll i,j,count;
    ll N;
    cin>>N;
    vector<ll> A(N,0);
    vector<ll> exist(100100,0);
	ll gcd=0;
	for(i=0;i<N;i++){
		cin>>A[i];
		gcd=GCD(gcd,A[i]);
		exist[A[i]]++;
	}
	for(i=2;i<=1000000;i++) {
		x=0;
		for(j=i;j<=1000000;j+=i) x+=exist[j];
		if(x>=2) break; //被りがあったら
	}
	if(i==1000001) {//被りがなければiは1000001となる
		cout<<"pairwise coprime"<<endl;
		return;
	}
	if(gcd==1) {
		cout<<"setwise coprime"<<endl;
	}
	else {
		cout<<"not coprime"<<endl;
	}
}


int main()
{
    solve();
    return 0;
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:30:17: error: 'x' was not declared in this scope
   30 |                 x=0;
      |                 ^
Language: C++

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

int main() {
  
  int N;
  cin >> N ;
  
  vector<int> A(N);
  for (int i = 0; i < N; i++) {
    cin >> A.at(i);
  }
  
  int n = A.at(0);
  
  for (int i = 1; i < N; i++) {
    n = gcd(c,A.at(i));
  }
  if (n > 1) {
    cout << "not coprime" << endl;
    goto end;
  }
  
  for (int i = 0; i < N; i++) {
    for (int j = i+1; j < N; j++) {
      if (gcd(A.at(i),A.at(j)) > 1) {
        cout << "setwise coprime" << endl;
        goto end;
      }
    }
  }
  
  cout << "pairwise coprime" << endl;
  
  end:
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:13: error: 'c' was not declared in this scope
   17 |     n = gcd(c,A.at(i));
      |             ^
Language: C++

#include <algorithm>
#include <bitset>
#include <cassert>
#include <cctype>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <time.h>
#include <tuple>
#include <utility>
#include <vector>
#define ll long long
#define itn int
#define endl '\n'
#define co(ans) cout<<ans<<endl
#define COYE cout<<"YES"<<endl
#define COYe cout<<"Yes"<<endl
#define COye cout<<"yes"<<endl
#define CONO cout<<"NO"<<endl
#define CONo cout<<"No"<<endl
#define COno cout<<"no"<<endl
#define FORE(i,a) for(auto &i:a)
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define FFOR(i,a,b) for(int i=(a);i<=(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define RREP(i,n)  FFOR(i,1,n)
#define PB push_back
#define MP make_pair
#define ALL(V) (V).begin(),(V).end()
#define SORT(V) sort((V).begin(),(V).end())
#define REVERSE(V) reverse((V).begin(),(V).end())
#define EACH(V,i) for(typeof((V).begin()) i=(V).begin();i!=(V).end();++i)
#define equals(a,b) (fabs((a)-(b))<EPS)
#define INF ((1LL<<62)-(1LL<<31))
#define EPS 1e-10
#define PI 3.141592653589793238
#define MOD 1000000007
#define MMOD 998244353
#define MAX 2010101
using namespace std;
using Edge=pair<ll,ll>;
using Graph=vector<vector<int>>;
inline int toInt(string s){int v;istringstream sin(s);sin>>v;return v;}
template<class T>inline string toString(T x){ostringstream sout;sout<<x;return sout.str();}
template<class T>bool chmax(T &a,const T &b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T &a,const T &b){if(b<a){a=b;return 1;}return 0;}
typedef vector<int> VI;
typedef vector<ll> VL;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int,int> PII;
typedef pair<ll,ll> PLL;
typedef long long LL;
const int dx[4]={0,1,0,-1},dy[4]={1,0,-1,0};
ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
ll lcm(ll a,ll b){return a/gcd(a,b)*b;}

////////// エラトステネスの篩 //////////

vector<ll> PP;

void Eratosthenes_init(ll n){
  vector<bool> is_prime(n+1);
  for(ll i=0; i<=n; ++i) is_prime[i]=true;
  for(ll i=2; i<=n; ++i){
    if(is_prime[i]){
      for(ll j=2*i; j<=n; j+=i){
        is_prime[j]=false;
      }
      PP.emplace_back(i);
    }
  }
}

//////////////////////////////////////////////////

int main(){
  ll N;
  cin>>N;
  ll A[N];
  map<ll,ll> Mcnt;
  REP(i,N) cin>>A[i],Mcnt[A[i]]++;
  
  ll ggcd=A[0];
  RREP(i,N-1) ggcd=gcd(ggcd,A[i]);
  if(ggcd>1){
    cout<<"not coprime"<<endl;
    return 0;
  }
  
  FORE(v,Mcnt){
    if(v.second>1){
      cout<<"setwise coprime"<<endl;
      return 0;
    }
  }
  
  Eratosthenes_init(1010101);
  
  FORE(v,PP){
    ll cnt=0;
    REP(i,N) if(A[i]%v==0) cnt++;
    if(cnt>1){
      cout<<"setwise coprime"<<endl;
      reurn 0;
    }
  }
  
  cout<<"pairwise coprime"<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:120:7: error: 'reurn' was not declared in this scope
  120 |       reurn 0;
      |       ^~~~~
Language: C++

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

#define cf ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0)
#define fox(i,n) for( i=0;i<n;i++)
#define srtar(a,n) sort(a,a+n)
#define srtvec(v) sort(v.begin(),v.end())
#define fauto(x,t) for(auto x: t)
#define mem(n,x) memset(n, x, sizeof(n))
const ll mac=2e5;
bool cum[mac+10];
vector<ll>acn,prit;
void siv()
{
    ll i, j, k ;
    mem(cum,true);
    cum[0]=cum[1]=false;
    for(i=2; i<=mac; i++)
    {
        if(cum[i])
        {
            prit.push_back(i);
            for(j=i*i; j<=mac; j+=i)
            {
                cum[i]=false;
            }
        }
    }
}
map<ll,ll>mp;
void pf(ll n)
{
    ll i, j, p ;
    for(i=0; i<prit.size(); i++)
    {
        p=prit[i];
        if(p*p>n)
            break;
        if(n%p==0)
        {
            while(n%p==0)
            {
                n/=p;
            }
            mp[p]++;
        }
    }
    if(n!=1)
        mp[n]++;
}
int main()
{
    ll t, m, g,n;
    cin >> n ;
    ll a[n];
    fox(i,n)
    {
        cin >> a[i];
        pf(a[i]);
        if(i==0)
            g=a[0];
        else
        {
            g=__gcd(g,a[i]);
        }
    }
    int y=1;
    for(auto x : mp)
    {
        if (x.second != 1)
        {
            y = 0;
            break;
        }
    }
    if(y)
        cout << "pairwise coprime" << endl;
    else if(g==1) cout <<"setwise coprime" << endl;
    else
        cout << "not coprime" << endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:57:9: error: 'i' was not declared in this scope
   57 |     fox(i,n)
      |         ^
a.cc:6:23: note: in definition of macro 'fox'
    6 | #define fox(i,n) for( i=0;i<n;i++)
      |                       ^