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

#include<bits/stdc++.h>
using namespace std;
const int N=505;
int ans[N*N],x[N],f[N],n;
int cmp(int a,int b){
	return x[a]<x[b];
}
int main(){
	scanf("%d",&n);
	for (int i=1;i<=n;i++)scanf("%d",&x[i]),f[i]=i;
	sort(f+1,f+n+1,cmp);
	int k=1;
	for (int i=1;i<=n;i++){
		if (ans[x[f[i]]]){
			puts("No");
			return 0;
		}
		ans[x[f[i]]]=i;
		for (int j=1;j<f[i];j++){
			while (ans[k])k++;
			if (k>x[f[i]]){
				puts("No");
				return 0;
			}
			ans[k]=f[i];
		}
	}
	int k=n*n;
	for (int i=1;i<=n;i++)
		for (int j=1;j<=n-f[i];j++){
			while (ans[k])k--;
			if (k<x[f[i]]){
				puts("No");
				return 0;
			}
			ans[k]=f[i];
		}
	puts("Yes");
	for (int i=1;i<=n*n;i++)printf("%d ",ans[i]);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:13: error: redeclaration of 'int k'
   28 |         int k=n*n;
      |             ^
a.cc:12:13: note: 'int k' previously declared here
   12 |         int k=1;
      |             ^
Language: C++

#include <bits/stdc++.h>
typedef long long ll;
const int INF=1e9,MOD=1e9+7,ohara=1e6;
const ll LINF=1e18;
using namespace std;

#define rep(i,n) for(ll (i)=0;(i)<(int)(n);(i)++)
#define rrep(i,a,b) for(ll i=(a);i<(b);i++)
#define rrrep(i,a,b) for(ll i=(a);i>=(b);i--)
#define all(v) (v).begin(), (v).end()
#define pb(q) push_back(q)
#define Size(n) (n).size()
#define Cout(x) cout<<(x)<<endl

ll n,cnt,ans[ohara],b,c,d,tmp,tmpp,m,h,w,x[ohara],y,sum,pos;
int dy[]={1,0,-1,0};
int dx[]={0,1,0,-1};
//int dy[]={-1,0,1,-1,1,-1,0,1};
//int dx[]={-1,-1,-1,0,0,1,1,1};
string alph("abcdefghijklmnopqrstuvwxyz"),s;
bool fl;
struct edge{int to,cost;};
map<pair<ll,ll>,ll> mp;
map<ll,ll> cou;
map<ll,ll> couu;
pair<ll,ll> p[ohara];

//-------------------------↓↓↓↓↓↓------------------------

int main(void){
       cin.tie(0);
    ios::sync_with_stdio(false);
      
    cin>>n;
    rep(i,n)cin>>x[i],p[i]=make_pair(x[i],i);
    sort(p,p+n);
    rep(i,n)ans[x[i]]=i+1;

    rep(i,n){
        tmp=p[i].second;
        ll ri;
        ri=n-tmp-1;
        ll cntt=0;
        rrep(j,1,n*n){
            if(cntt==le)break;
            if(ans[j]==0)ans[j]=tmp+1,cntt++;
        }
    }
    
    reverse(p,p+n);
    rep(i,n){
        tmp=p[i].second;
        ll ri;
        ri=n-tmp-1;
        ll cntt=0;
        rrrep(j,n*n,1){
            if(cntt==ri)break;
            if(ans[j]==0)ans[j]=tmp+1,cntt++;
        }
    }
    

    rrep(i,1,n*n+1){
        cou[ans[i]]++;
        mp[{ans[i],cou[ans[i]]}]=i;
    }
    rep(i,n){
        if(mp[{i+1,i+1}]!=x[i]){
            Cout("No");
            return 0;
        }
    }

    rrep(i,1,n*n+1){
        if(ans[i]==0){
            Cout("No");
            return 0;
        }
    }

    rrep(i,1,n*n+1){
        couu[ans[i]]++;
    }
    rrep(i,1,n+1){
        if(couu[i]!=n){
            Cout("No");
            return 0;
        }
    }
    
    
    Cout("Yes");
    rrep(i,1,n*n+1){
        if(i==n*n)Cout(ans[i]);
        else cout<<ans[i]<<" ";
    }
    
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:22: error: 'le' was not declared in this scope; did you mean 'll'?
   45 |             if(cntt==le)break;
      |                      ^~
      |                      ll
Language: C++

#include<iostream>
using namespace std;
int main(){
  int n;cin>>n;
  for(int i=0;i<n;i++){int a;cin>>a;}
  cout<<"No"<<endl;
  reutrn 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:3: error: 'reutrn' was not declared in this scope
    7 |   reutrn 0;
      |   ^~~~~~
Language: C++

#include <iostream>
#include <utility>
#include <algorithm>

using namespace std;

int i,j,n,x[510],a[300000],b[300000],y[510];
pair<int,int> p[510];
int main(){
	cin >> n;
	for(i=1;i<=n;i++){
		cin >> x[i];
		a[x[i]] = i;
		b[x[i]] = 1;
		y[i]=n-i;
		p[i]=make_pair(x[i],i);
	}
	
	for(i=1;i<=n*n;i++){
		if(b[i]==1){
			int cnt = a[i]-1;
			for(j=d;j<=i;j++){
				if(cnt==0){
					break;
				}
				if(b[j]==0){
					a[j] = a[i];
					b[j] = 1;
					cnt--;
				}
				if(j==i){
					cout << "No" << endl;
					return 0;
				}
			}
		}
	}
	sort(p,p+n);
	for(i=1;i<=n*n;i++){
		if(b[i]==0){
			for(j=1;j<=n;j++){
				if(y[p[j].second]!=0){
					y[p[j].second]--;
					a[i]=p[j].second;
					b[i]=1;
					break;
				}
			}
		}
	}
	for(i=1;i<=n*n;i++){
		b[i]=0;
	}
	for(i=1;i<=n*n;i++){
		b[a[i]]++;
		if(b[a[i]]==a[i]){
			if(i!=x[i]){
				cout << "No" << endl;
				return 0;
			}
		}
	}
	
	cout << "Yes" << endl;
	for(i=1;i<=n*n;i++){
		cout << a[i] << " ";
	}
	cout << endl;
}
	

Compiler output:
a.cc: In function 'int main()':
a.cc:22:31: error: 'd' was not declared in this scope
   22 |                         for(j=d;j<=i;j++){
      |                               ^
Language: C++

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

using P = pair<int, int>;

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

    vector<P> xi(N);
    vector<int> x(N);
    for (int i = 0; i < N; i++) {
        cin >> x[i];
        x[i]--;

        xi[i] = {x[i], i + 1};
    }
    sort(xi.begin(), xi.end());

    static int num[510];

    vector<int> ans(N * N, -1);
    int idx = 0;

    for (int i = 0; i < N; i++) {
        // xi[i].secondを見ようとしている
        int f = xi[i].first;
        int s = xi[i].second;

        cerr << "f: " << f << " s: " << s << endl;
        while (idx < f and num[s] < s - 1) {
            if (ans[idx] < 0) {
                ans[idx] = s;
                num[s]++;
            }
            idx++;
        }
        if (num[s] != s - 1) {
            cout << "No" << endl;
            return 0;
        }
        ans[f] = s;
        num[s]++;
    }

    for (int n = 1; n <= N; n++) {
        while (idx < N * N and num[n] < N) {
            if (ans[idx] < 0) {
                ans[idx] = n;
                num[n]++;

                if (idx < x[n - 1]) {
                    cout << "No" << endl;
                    return 0;
                }
            }
            idx++;
        }
    }

    int sum = 0;
    for (int n = 1; n <= N; n++) sum += num[n];

    if (sum != N * N) {
        cout << "No" << endl;
        return 0;
    }

    cout << "Yes" << endl;
    for (int a : ans) {
        cout << a << " ";
    }
    cout << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:5: error: 'sort' was not declared in this scope; did you mean 'short'?
   20 |     sort(xi.begin(), xi.end());
      |     ^~~~
      |     short
Language: C++

#include<bits/stdc++.h>
#define N 505
using namespace std;
int n,x[N],a[N*N],cnt[N],b[N],top;
int main()
{
    scanf("%d",&n);
    for(int i=1;i<=n;i++)
    {
        scanf("%d",&x[i]);
        a[x[i]]=i;
    }
    for(int i=1;i<=n*n;i++)if(a[i])b[++top]=a[i];
    for(int i=1;i<=n;i++)cnt[i]=i-1;
    for(int i=1;i<=n*n;i++)
    {
        if(!a[i])
        {
            for(int now=1;now<=n;now++)
            {
                if(!cnt[b[now]])continue;
                a[i]=b[now];
                cnt[b[now]]--;
                break;
            }
        }
    }
    int flag=0;now=n;
    for(int i=1;i<=n;i++)cnt[i]=n-i;
    for(int i=n*n;i>=1;i--)
    {
        if(!a[i])
        {
            for(int now=1;now<=n;now++)
            {
                if(!cnt[b[now]])continue;
                a[i]=b[now];
                cnt[b[now]]--;
                break;
            }
        }
    }
    for(int i=1;i<=n;i++)
    {
        int cnt=0;
        for(int j=1;j<=x[i];j++)if(a[j]==i)cnt++;
        if(cnt!=i)flag=1;
    }
    if(flag)puts("No");
    else
    {
        puts("Yes");
        for(int i=1;i<=n*n;i++)
        {
            printf("%d ",a[i]);
        }puts("");
    }
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:28:16: error: 'now' was not declared in this scope; did you mean 'pow'?
   28 |     int flag=0;now=n;
      |                ^~~
      |                pow
Language: C++

#include<bits/stdc++.H>
using namespace std;
using pii = pair<int, int>;
const int N = 505;
pii p[N];
int n, vis[N *  N];

int main () {
	scanf("%d", &n);
	for (int i = 1; i <= n; ++i) scanf("%d", &p[i].first), p[i].second = i;
	sort(p + 1, p + n + 1);
	for (int i = 1, j = 1, k; i <= n; ++i) {
		k = p[i].second;
		for (; p[i].second > 1 && j < p[i].first; ++j) if (!vis[j]) --p[i].second, vis[j] = k;
		if (p[i].second > 1) return puts("No"), 0;
		vis[p[i].first] = k;
	}
	puts("Yes");
	for (int i = 1, j = 1, k = n - 1; i <= n * n; ++i) {
		if (!vis[i]) {
			vis[i] = j;
			if (--k == 0) k = n - (++j);
		}
		printf("%d ", vis[i]);
	}
	return 0;
}

Compiler output:
a.cc:1:9: fatal error: bits/stdc++.H: No such file or directory
    1 | #include<bits/stdc++.H>
      |         ^~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream>
#include <random>
#include<map>
#include <iomanip>
#include <time.h>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
#include <cassert>
#include<fstream>
#include <unordered_map>
#include <cstdlib>
using namespace std;
#define Ma_PI 3.141592653589793
#define eps 0.00000000000000000000000001
#define LONG_INF 3000000000000000000
#define GOLD 1.61803398874989484820458
#define MAX_MOD 1000000007
#define REP(i,n) for(long long i = 0;i < n;++i)                                                                             
#define seg_size 524288
int grid[2000000] = {};
map<int, int> geko;
vector<pair<int, int>> wow;
vector<int>x;
int main() {
	int n;
	cin >> n;
	while (true) {
		for (int i = 0;i < 500000;++i) grid[i] = 0;
		REP(i, n) {
			int geko;
			cin >> geko;
			x.push_back(geko);
			wow.push_back(make_pair(geko, i + 1));
			if (grid[geko] != 0) {
				cout << "No" << endl;
				goto ok;
				return 0;
			}
			grid[geko] = i + 1;
		}
		sort(wow.begin(), wow.end());
		//右側に設置
		int now_itr = n - 1;
		int now_filled = wow[now_itr].second;
		if (now_filled == n) {
			if (now_itr != 0) {
				now_itr--;
				now_filled = wow[now_itr].second;
			}
		}
		for (int i = n*n;i >= 1;--i) {
			if (grid[i] == false) {
				grid[i] = wow[now_itr].second;
				now_filled++;
			fo2:;
				if (now_filled == n) {
					if (now_itr == 0) {
						break;
					}
					now_itr--;
					now_filled = wow[now_itr].second;
					goto fo2;
				}
			}
		}
		now_itr = 0;
		now_filled = wow[now_itr].second - 1;
		if (now_filled == 0) {
			if (now_itr != n - 1) {
				now_itr++;
				now_filled = wow[now_itr].second - 1;
			}
		}
		for (int i = 1;i <= n*n;++i) {
			if (grid[i] == false) {
				grid[i] = wow[now_itr].second;
				now_filled--;
			fo1:;
				if (now_filled == 0) {
					now_itr++;
					if (now_itr == n) {
						break;
					}
					now_filled = wow[now_itr].second - 1;
					goto fo1;
				}
			}
		}
		for (int i = 1;i <= n*n;++i) {
			if (grid[i] == 0) {
				cout << "No" << endl;
				return 0;
			}
			geko[grid[i]]++;
			if (geko[grid[i]] == grid[i]) {
				if (i != x[grid[i] - 1]) {
					cout << "No" << endl;
					return 0;
				}
			}
		}
		cout << "Yes" << endl;
		for (int i = 1;i <= n*n;++i) {
			cout << grid[i] << " ";
		}
		cout << endl;
		return 0;
	ok:;
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:125:9: error: jump to label 'ok'
  125 |         ok:;
      |         ^~
a.cc:53:38: note:   from here
   53 |                                 goto ok;
      |                                      ^~
a.cc:61:21: note:   crosses initialization of 'int now_filled'
   61 |                 int now_filled = wow[now_itr].second;
      |                     ^~~~~~~~~~
a.cc:60:21: note:   crosses initialization of 'int now_itr'
   60 |                 int now_itr = n - 1;
      |                     ^~~~~~~
Language: C++

import sequtils,strutils,algorithm

type
    binaryIndexTree[I:static[int]] = array[I + 1,int] #要素数 <= I 1始まりで BIT[0]は要素数
    item = tuple[x, i : int]

proc add(BIT :var binaryIndexTree,i : int, a : int)=
    var index = i
    while BIT[0] >= index:
        BIT[index] += a
        index += ((index xor (index - 1)) and index)

proc sum(BIT : binaryIndexTree, i : int):int =
    var index = i
    while index > 0:
        result += BIT[index]
        index = (index and (index - 1))

#[
var
    BIT : binaryIndexTree[12]
    A = stdin.readline.split.map(parseInt)

BIT[0] = 12 #忘れずに書く

for i,a in A:
    BIT.add(i + 1,a)
for i in 1..12:
    echo BIT.sum(i)
]#
var
    N = stdin.readline.parseInt
    X = stdin.readline.split.map(parseInt)
    A = newSeq[int](N * N)
    b : binaryIndexTree[2500]
    items = newSeq[item](0)

b[0] = N * N
for i,x in X:
    b.add(x, i + 1)
    A[x - 1] = i + 1
    items.add((x - 1, i + 1))
    
items = sortedByIt(items, it.x)
var
    flag : bool = true
    p = 0
    j = items[p].i - 1
for i in 1..(N * N):
    if b.sum(i) > i:
        flag = false
        break
    if j == 0:
        p += 1
        if p > items.high:
            break
        j = items[p].i - 1
    if A[i - 1] == 0:
        j -= 1
        A[i - 1] = items[p].i
if flag:
    p -= 1
    j = N - items[p].i
    #echo A.join(" ")
    for i in countdown(N * N, 1):
        if A[i - 1] == 0:
            j -= 1
            A[i - 1] = items[p].i
        if j == 0:
            p -= 1
            if p < 0:
                break
            j = N - items[p].i
    for i in 0..<(N * N):
        if A[i] == 0:
            flag = false
            break
if flag:
    echo "Yes"
    echo A.join(" ")
else:
    echo "No"

Compiler output:
a.cc:4:55: error: stray '#' in program
    4 |     binaryIndexTree[I:static[int]] = array[I + 1,int] #要素数 <= I 1始まりで BIT[0]は要素数
      |                                                       ^
a.cc:19:2: error: invalid preprocessing directive #[
   19 | #[
      |  ^
a.cc:24:13: error: stray '#' in program
   24 | BIT[0] = 12 #忘れずに書く
      |             ^
a.cc:28:10: error: too many decimal points in number
   28 | for i in 1..12:
      |          ^~~~~
a.cc:30:2: error: stray '#' in program
   30 | ]#
      |  ^
a.cc:49:10: error: too many decimal points in number
   49 | for i in 1..(N * N):
      |          ^~~
a.cc:64:6: error: invalid preprocessing directive #echo
   64 |     #echo A.join(" ")
      |      ^~~~
a.cc:74:14: error: too many decimal points in number
   74 |     for i in 0..<(N * N):
      |              ^~~
a.cc:1:1: error: 'import' does not name a type
    1 | import sequtils,strutils,algorithm
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++


#include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
using namespace std;

int n, x[500];
int a[100000];
vector<pair<int, int>>col;//first:position,second:value

int main(void)
{
	cin >> n;
	for (int i = 0; i < n; ++i)
		cin >> x[i];
	int siz = n * n;
	fill(a, a + siz, -1);
	for (int i = 0; i < n; ++i)
	{
		a[x[i] - 1] = i + 1;
		col.emplace_back(x[i] - 1, i + 1);
	}
	sort(col.begin(), col.end());
	int gauge = 0;
	for (auto& itr = col.begin(); itr != col.end(); ++itr)
	{
		int umnum = itr->second - 1;
		for (int i = 0; i < umnum; ++i)
		{
			while (a[gauge] >= 0)++gauge;
			a[gauge] = itr->second;
			if (gauge > itr->first)
			{
				return 0 * printf("No\n");
			}
		}
	}
	gauge = siz - 1;
	for (auto& itr = col.rbegin(); itr != col.rend(); ++itr)
	{
		int umnum = n - itr->second;
		for (int i = 0; i < umnum; ++i)
		{
			while (a[gauge] >= 0)--gauge;
			a[gauge] = itr->second;
			if (gauge < itr->first)
			{
				return 0 * printf("No\n");
			}
		}
	}
	printf("Yes\n");
	for (int i = 0; i < siz; ++i)
	{
		cout << a[i];
		if (i != siz - 1)
		{
			cout << " ";
		}
		else
		{
			cout << "\n";
		}
	}
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:35: error: cannot bind non-const lvalue reference of type '__gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > >&' to an rvalue of type 'std::vector<std::pair<int, int> >::iterator'
   40 |         for (auto& itr = col.begin(); itr != col.end(); ++itr)
      |                          ~~~~~~~~~^~
a.cc:54:36: error: cannot bind non-const lvalue reference of type 'std::reverse_iterator<__gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > > >&' to an rvalue of type 'std::vector<std::pair<int, int> >::reverse_iterator' {aka 'std::reverse_iterator<__gnu_cxx::__normal_iterator<std::pair<int, int>*, std::vector<std::pair<int, int> > > >'}
   54 |         for (auto& itr = col.rbegin(); itr != col.rend(); ++itr)
      |                          ~~~~~~~~~~^~
Language: C++

#include<cstdio>
#include<cmath>
#include<iostream>
#include<algorithm>
#include<string>
#include<iomanip>
using namespace std;
#define loop(i,a,b) for(int i = a; i < b; i++)
#define rep(i,a) loop(i,0,a)
#define shosu(x) fixed<<setprecision(x)
typedef long long ll;

int main(){
	int n;
	cin>>n;
	int tmp;
	int m=1;
	int M =501;
	int flg=0;
	loop(i,1,n+1){
		cin>>tmp;
		int tm=ceil(1.0*tmp/i);
		int tM;
		if(i!=1)
			tM=ceil(((float)tmp)/i);
		else
			tM=M;
%		cout<<tm<<' '<<m<<' '<<tM<<' '<<M<<endl;
		if( (tm < m || tm > M) && ((tM < m) || (tM > M)) )
			break;
		m=max(m,tm);
		M=min(M,tM);
		if(m>M)
			break;
		if(i==n)
			flg++;
	}
	if(!flg)
		cout<<"No"<<endl;
	else{
		cout<<"Yes"<<endl;
		rep(i,n) rep(j,m){
			if(i==0 &&j==0)
				cout<<i+1;
			else
				cout<<' '<<i+1;
		}
		cout<<endl;
	}
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:28:1: error: expected primary-expression before '%' token
   28 | %               cout<<tm<<' '<<m<<' '<<tM<<' '<<M<<endl;
      | ^
Language: C++

#include<iostream>
#include<algorithm>
#include<string>
#include<cstring>
#include<cmath>
#include<vector>
#include<queue>
#include<stack>
#include<utility>
#include<iomanip>
using namespace std;

int main()
{
	int n;cin>>n;
	int a[501];
	for(int i=1;i<=n;i++)cin>>a[i];
	int s[250010];
	memset(s,-1,sizeof(s));
	int l=0,r=n*n-1;
	for(int i=1;i<=n;i++)
	{
		s[a[i]-1]=i;
		for(int c=1;c<i&&l<n*n;)
		{
			while(s[l]!=-1&&l<n*n)l++;
			if(l==n*n)
			{
				cout<"No"<<endl;
				return 0;
			}
			s[l++]=i;
			c++;
		}
	}
	for(int i=n;i>0;i--)
	{
		for(int c=0;c<n-i&&r>=0;)
		{
			while(s[r]!=-1&&r>=0)r--;
			if(r<0)
			{
				cout<"No"<<endl;
				return 0;
			}
			s[r--]=i;
			c++;
		}
	}
	bool flag=true;
	int p[501][501];
	memset(p,-1,sizeof(p));
	int cou[501];
	memset(cou,0,sizeof(cou));
	for(int i=0;i<n*n;i++)
	{
		p[s[i]][cou[s[i]]++]=i;
	}
	for(int i=1;i<=n;i++)
	{
		if(p[i][i-1]!=a[i]-1)flag=false;
		if(p[i][n-1]==-1)flag=false;
	}
	if(flag)
	{
		cout<<"Yes"<<endl;
		for(int i=0;i<n*n;i++)cout<<s[i]<<(i==n*n-1?"\n":" ");
	}
	else cout<<"No"<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:29:42: error: invalid operands of types 'const char [3]' and '<unresolved overloaded function type>' to binary 'operator<<'
   29 |                                 cout<"No"<<endl;
      |                                      ~~~~^~~~~~
a.cc:43:42: error: invalid operands of types 'const char [3]' and '<unresolved overloaded function type>' to binary 'operator<<'
   43 |                                 cout<"No"<<endl;
      |                                      ~~~~^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define P 1000000007
int a[100005],in[100005],col[100005],cnt[100005],n,L[100005];bool cir[100005];long long f[100005],ans=1;
int main()
{
	scanf("%d",&n);
	for(int i=1;i<=n;++i) scanf("%d",&a[i]),++in[a[i]];
	for(int i=1;i<=n;++i)
	{
		if(col[i]) continue;int x=i;for(;!col[x];x=a[x]) col[x]=i;
		if(col[x]!=i) continue;for(;!cir[x];x=a[x]) cir[x]=1; 
	}
	for(int i=1;i<=n;++i) if((cir[i]&&in[i]>2)||(!cir[i]&&in[i]>1)) return puts("0"),0;
	for(int i=1;i<=n;++i){if(in[i]) continue;int x=i,tmp=0;while(!cir[x]) x=a[x],tmp++;L[x]=tmp;} 
	for(int i=1;i<=n;++i)
	{
		if(!cir[i]) continue;int x=i,st=0,fir=0,id=0,len=0;
		for(cir[x];x=a[x])
		{
			++id;cir[x]=0;
			if(L[x])
			{
				if(!fir){st=fir=id;len=L[x];continue;}
				else{(ans*=(L[x]<(id-st))+(L[x]<=(id-st)))%=P;if(!ans)return puts("0"),0;st=id;continue;}
			}
		}
		if(fir){(ans*=(len<(id+fir-st))+(len<=(id+fir-st)))%=P;if(!ans)return puts("0"),0;}
		else cnt[id]++;
	}
	for(int i=1;i<=n;++i)
	{
		f[0]=1;if(!cnt[i]) continue;
		if(i>1&&(i%2)) for(int j=1;j<=cnt[i];++j) {f[j]=f[j-1]*2%P;if(j>1) (f[j]+=f[j-2]*(j-1)*i%P)%=P;}
		else for(int j=1;j<=cnt[i];++j){f[j]=f[j-1];if(j>1) (f[j]+=f[j-2]*(j-1)*i%P)%=P;}   
		(ans*=f[cnt[i]])%=P;if(!ans)return puts("0"),0;
	}
	printf("%lld",ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:34: error: expected ';' before ')' token
   20 |                 for(cir[x];x=a[x])
      |                                  ^
      |                                  ;
Language: C++

#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <algorithm>
#define MOD 1000000007

using namespace std;

typedef long long ll;

ll dp(int n,int m) {
  ll s1=1,s2=0;
  for(int i=1;i<=m;i++) {
  	ll f=(s1*(((n&1)&&n>1)?2LL:1LL)+s2*(i-1)%MOD*n)%MOD;
  	s2=s1;
  	s1=f;
  }
  return s1;
}

int a[100005],sum[100005];
bool vis[100005],cir[100005];
vector <int> son[100005];

int getlen(int x) {
  vis[x]=1;
  if (!cir[x]&&son[x].size()>=2) {
  	puts("0");
  	exit(0);
  }
  for(int i=0;i<son[x].size();i++)
    if (!cir[son[x][i]]) return getlen(son[x][i])+1;
  return 1;
}

int now[100005],l[100005],pos[100005];

ll calc(int x) {
  do {
  	vis[x]=1;
  	x=a[x];
  } while (!vis[x]);
  int d=0,tot=0;
  do {
  	cir[x]=1;
  	x=a[x];
  } while (!cir[x]);
  int t=x;
  do {
  	pos[x]=++d;
  	l[x]=getlen(x)-1;
  	if (l[x]) now[++tot]=x;
  	x=a[x];
  } while (x!=t);
  if (!tot) {
  	sum[d]++;
  	return 1;
  }
  ll ans=1;
  for(int i=1;i<=tot;i++) {
  	int p=now[i],q=now[i%tot+1];
  	int dis=(pos[q]-pos[p]+d)%d;
  	if (!dis) dis=d;
  	if (dis<l[q]) {
  		puts("0");
  		exit(0);
	  }
	if (dis>l[q]) ans=ans*2LL%MOD;
  }
  return ans;
}

int main() {
  int n;
  scanf("%d",&n);
  for(int i=1;i<=n;i++) {
  	scanf("%d",&a[i]);
  	son[a[i]].push_back(i);
  	if (son[a[i]].size()>2) {
  		puts("0");
  		exit(0);
	  }
  }
  ll ans=1;
  for(int i=1;i<=n;i++)
    if (!vis[i]) ans=(ans*calc(i))%MOD;
  for(int i=1;i<=n;i++)
    if (sum[i]) ans=ans*dp(i,sum[i])%MOD;
  printf("%lld\n",ans);
  return 0;
}

Compiler output:
a.cc:23:1: error: 'vector' does not name a type
   23 | vector <int> son[100005];
      | ^~~~~~
a.cc: In function 'int getlen(int)':
a.cc:27:16: error: 'son' was not declared in this scope
   27 |   if (!cir[x]&&son[x].size()>=2) {
      |                ^~~
a.cc:31:17: error: 'son' was not declared in this scope
   31 |   for(int i=0;i<son[x].size();i++)
      |                 ^~~
a.cc: In function 'int main()':
a.cc:78:9: error: 'son' was not declared in this scope
   78 |         son[a[i]].push_back(i);
      |         ^~~
Language: C++

#include<iostream>
#include<vector>
#include<algorithm>
#include<cstring>
#include<cstdio>
#include<cmath>
#include<cstdlib>
#include<ctime>
#include<queue>
#include<set>
#include<map>
#include<stack>
using namespace std;
typedef long long LL;
const int N=1e5+100;
int gi() {
	int w=0;bool q=1;char c=getchar();
	while ((c<'0'||c>'9') && c!='-') c=getchar();
	if (c=='-') q=0,c=getchar();
	while (c>='0'&&c <= '9') w=w*10+c-'0',c=getchar();
	return q? w:-w;
}
int p[N],vis[N],st[N],len[N],tot[N];
int head[N],next[N];
bool rt[N];
int f[N],g[N];
inline int dfs(int k) {
	int s=0;
	for (int i=head[k];i;i=next[i])
		if (!rt[i]) {
			if (s) puts("0"),exit(0);
			s=dfs(i)+1;
		}
	return s;
}
int main()
{
	const int mod=1e9+7;
	int n=gi(),i,k,t,s,cnt=0,top,ans=1,p2=0;
	bool is;
	for (i=1;i<=n;i++) p[i]=gi(),next[i]=head[p[i]],head[p[i]]=i;
	for (i=1;i<=n;i++)
		if (!vis[i]) {
			++cnt;
			for (k=i;!vis[k];k=p[k])
				vis[k]=cnt;
			if (vis[k]!=cnt) continue;
			for (t=k,top=0;st[1]!=t;t=p[t]) rt[st[++top]=t]=true;
			reverse(st+1,st+1+top);
			is=false;
			for (k=1;k<=top;k++)
				is|=len[k]=dfs(st[k]);
			if (is) {
				for (k=1;k<=top;k++)
					if (len[k]) {
						for (t=k%top+1,s=1;!len[t];t=t%top+1,s++);
						if (s<len[k]) return puts("0"),0;
						if (s!=len[k]) p2++;
					}
			} else tot[top]++,p2+=top>1&&(top&1);
		}
	const int inv2=(mod+1)/2;
	for (i=f[0]=f[1]=g[0]=g[1]=1;i<=n;i++) {
		f[i+1]=(1LL*f[i-1]*i%mod*inv2+f[i])%mod;
		g[i+1]=(2LL*g[i-1]*i+g[i])%mod;
	}
	for (i=1;i<=n;i++)
		ans=1LL*ans*(i==1||i%2==0?g[tot[i]]:f[tot[i]])%mod;
	while (p2--) (ans<<=1)%=mod;
	printf("%d\n",ans);
	return 0;
}


Compiler output:
a.cc: In function 'int dfs(int)':
a.cc:29:32: error: reference to 'next' is ambiguous
   29 |         for (int i=head[k];i;i=next[i])
      |                                ^~~~
In file included from /usr/include/c++/14/string:47,
                 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:1:
/usr/include/c++/14/bits/stl_iterator_base_funcs.h:232:5: note: candidates are: 'template<class _InputIterator> constexpr _InputIterator std::next(_InputIterator, typename iterator_traits<_Iter>::difference_type)'
  232 |     next(_InputIterator __x, typename
      |     ^~~~
a.cc:24:13: note:                 'int next [100100]'
   24 | int head[N],next[N];
      |             ^~~~
a.cc: In function 'int main()':
a.cc:41:38: error: reference to 'next' is ambiguous
   41 |         for (i=1;i<=n;i++) p[i]=gi(),next[i]=head[p[i]],head[p[i]]=i;
      |                                      ^~~~
/usr/include/c++/14/bits/stl_iterator_base_funcs.h:232:5: note: candidates are: 'template<class _InputIterator> constexpr _InputIterator std::next(_InputIterator, typename iterator_traits<_Iter>::difference_type)'
  232 |     next(_InputIterator __x, typename
      |     ^~~~
a.cc:24:13: note:                 'int next [100100]'
   24 | int head[N],next[N];
      |             ^~~~
Language: C++

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define all(c) c.begin(),c.end()
#define pb push_back
#define fs first
#define sc second
#define show(x) cout << #x << " = " << x << endl
#define chmin(x,y) x=min(x,y)
#define chmax(x,y) x=max(x,y)
using namespace std;
template<class S,class T> ostream& operator<<(ostream& o,const pair<S,T> &p){return o<<"("<<p.fs<<","<<p.sc<<")";}
template<class T> ostream& operator<<(ostream& o,const vector<T> &vc){o<<"sz = "<<vc.size()<<endl<<"[";for(const T& v:vc) o<<v<<",";o<<"]";return o;}
typedef long long ll;
ll mod=1e9+7;
const int MX=100000;
ll f[MX+1],g[MX+1],inv[MX+1];
void precalc(){
	f[0]=1;
	rep1(i,MX) f[i]=f[i-1]*i%mod;
	inv[1]=1;
	for(int i=2;i<=MX;i++) inv[i]=mod-mod/i*inv[mod%i]%mod;
	g[0]=1;
	rep1(i,MX) g[i]=g[i-1]*inv[i]%mod;
}
ll C(int x,int y){
	return f[x]*g[y]%mod*g[x-y]%mod;
}
ll ex(ll x,ll p){
	ll a=1;
	while(p){
		if(p%2) a=a*x%mod;
		x=x*x%mod;
		p/=2;
	}
	return a;
}

const int MN=100000;
int N,a[MN];
int ks[MN+1];
bool vis[MN];
vector<int> Gi[MN];
int main(){
	precalc();
	cin>>N;
	rep(i,N){
		cin>>a[i],a[i]--;
		Gi[a[i]].pb(i);
	}
	rep(i,N) if(G[i].size()>2){
		puts("0");
		return 0;
	}
	rep(i,N) if(Gi[i].empty()){
		int to=a[i];
		if(Gi[to].size()!=2){
			puts("0");
			return 0;
		}
		vis[i]=1;
	}
	ll ans=1;
	rep(i,N) if(!vis[i]){
		int c=0;
		int v=i;
		vector<int> lens;
		bool vhas=(Gi[v].size()==2);
		int now=0;
		while(!vis[v]){
			if(Gi[v].size()==2){
				now++;
			}else{
				lens.pb(now);
				now=0;
			}
			vis[v]=1;
			v=a[v];
			c++;
		}
		if(v!=i){
			puts("0");
			return 0;
		}
		if(!vhas&&now==0&&lens.empty()){
			ks[c]++;
			continue;
		}
		if(vhas && lens.empty()){
			ans*=2;
			continue;
		}else if(vhas){
			lens[0]+=now;
		}
		for(int l:lens) ans*=(l+1);
	}
	ll ans=1;
	rep(L,MN+1){
		int K=ks[L];
		if(K==0) continue;
		show(L);
		show(K);
		ll sum=0;
		rep(a,MN+1){
			if(2*a>K) break;
			ll val=f[K]*g[K-2*a]%mod*ex(inv[2],a)%mod*g[a]%mod*ex(L,a)%mod*ex((L>=3?2:1),K-2*a)%mod;
			show(a);
			show(val);
			sum+=val;
			sum%=mod;
		}
		ans*=sum;
		ans%=mod;
	}
	if(ans<0) ans+=mod;
	cout<<ans<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:51:21: error: 'G' was not declared in this scope
   51 |         rep(i,N) if(G[i].size()>2){
      |                     ^
a.cc:97:12: error: redeclaration of 'll ans'
   97 |         ll ans=1;
      |            ^~~
a.cc:63:12: note: 'll ans' previously declared here
   63 |         ll ans=1;
      |            ^~~
Language: C++

#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cstdlib>
#include <queue>
using namespace std;
#define N 200050
typedef long long ll;
int head[N],to[N<<1],nxt[N<<1],cnt,n,siz[N];
int mx[N],se[N],d[N];ll ans;
char w[N];
inline void add(int u,int v) {
	to[++cnt]=v; nxt[cnt]=head[u]; head[u]=cnt;
}
void d1(int x,int y) {
	int i;
	siz[x]=w[x]-'0'; d[x]=w[x]=='0'?(1<<30):0;
	for(i=head[x];i;i=nxt[i]) if(to[i]!=y) {
		d1(to[i],x);
		siz[x]+=siz[to[i]];
		int v=mx[to[i]]+1;
		if(v>mx[x]) se[x]=mx[x],mx[x]=v;
		else if(v>se[x]) se[x]=v;
		if(siz[to[i]]) d[x]=min(d[x],v);
	}
}
void d2(int x,int y) {
	int i;
	if(d[x]<=(inf))ans+=min(se[x]+1,mx[x]-1)-d[x]+1;
	for(i=head[x];i;i=nxt[i]) if(to[i]!=y) {
		int v=(mx[to[i]]+1==mx[x])?(se[x]+1):(mx[x]+1);
		if(v>mx[to[i]]) se[to[i]]=mx[to[i]],mx[to[i]]=v;
		else if(v>se[to[i]]) se[to[i]]=v;
		if(siz[1]-siz[to[i]]>0) d[to[i]]=min(d[to[i]],v);
		d2(to[i],x);
	} 
}
int main() {
	scanf("%d",&n);
	int i,x,y;
	for(i=1;i<n;i++) scanf("%d%d",&x,&y),add(x,y),add(y,x);
	scanf("%s",w+1);
	d1(1,0); d2(1,0);
	printf("%lld\n",ans+1);
	return 0;
}


Compiler output:
a.cc: In function 'void d2(int, int)':
a.cc:29:19: error: 'inf' was not declared in this scope; did you mean 'int'?
   29 |         if(d[x]<=(inf))ans+=min(se[x]+1,mx[x]-1)-d[x]+1;
      |                   ^~~
      |                   int
Language: C++

#include <cstdio>
#include <cstring>
#include <algorithm>
#include <cstdlib>
#include <queue>
using namespace std;
#define N 200050
typedef long long ll;
int head[N],to[N<<1],nxt[N<<1],cnt,n,siz[N];
int mx[N],se[N];ll ans;
char w[N];
inline void add(int u,int v) {
	to[++cnt]=v; nxt[cnt]=head[u]; head[u]=cnt;
}
void d1(int x,int y) {
	int i;
	siz[x]=w[x]-'0';
	for(i=head[x];i;i=nxt[i]) if(to[i]!=y) {
		d1(to[i],x);
		siz[x]+=siz[to[i]];
		int v=mx[to[i]]+1;
		if(v>mx[x]) se[x]=mx[x],mx[x]=v;
		else if(v>se[x]) se[x]=v;
	}
}
void d2(int x,int y) {
	int i;
	ans+=min(se[x]+1,mx[x]-1)+1;
	for(i=head[x];i;i=nxt[i]) if(to[i]!=y) {
		int v=(mx[to[i]]+1==mx[x])?(se[x]+1):(mx[x]+1);
		if(v>mx[to[i]]) se[to[i]]=mx[to[i]],mx[to[i]]=v;
		else if(v>se[to[i]]) se[to[i]]=v;
		d2(to[i],x);
	} 
}
int main() {
	scanf("%d",&n);
	int i,x,y;
	for(i=1;i<n;i++) scanf("%d%d",&x,&y),add(x,y),add(y,x);
	scanf("%s",w+1);
	d1(1,0); d2(1,0);
	printf("%lld\n",ans+1);
	return ;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:43:9: error: return-statement with no value, in function returning 'int' [-fpermissive]
   43 |         return ;
      |         ^~~~~~
Language: C++

#include<iostream>
#include<cstring>
#include<algorithm>
#include<cstdio>
#include<cmath>
#include<cassert>
#define ll long long
#define inf 1000000000
using namespace std;
inline int read(){
	int re=0,flag=1;char ch=getchar();
	while(ch>'9'||ch<'0'){
		if(ch=='-') flag=-1;
		ch=getchar();
	}
	while(ch>='0'&&ch<='9') re=(re<<1)+(re<<3)+ch-'0',ch=getchar();
	return re*flag;
}
int n,dep[200010],disd[200010],disu[200010],mind[200010],exc[200010],w[200010];
int first[200010],cnte,fa[200010],siz[200010],high[200010],low[200010];
struct edge{
	int to,next;
}a[400010];
inline void add(int u,int v){
	a[++cnte]=(edge){v,first[u]};first[u]=cnte;
	a[++cnte]=(edge){u,first[v]};first[v]=cnte;
}
void dfs(int u,int f){
	int i,v;dep[u]=dep[f]+1;disd[u]=0;fa[u]=f;siz[u]=1;
	mind[u]=inf;
	if(((u==1&&first[u]==-1)||(u!=1&&a[first[u]].next==-1))){
		mind[u]=(w[u]?0:inf);return;
	}
	for(i=first[u];~i;i=a[i].next){
		v=a[i].to;if(v==f) continue;
		dfs(v,u);
		siz[u]+=siz[v];
		disd[u]=max(disd[u],disd[v]+1);
		mind[u]=min(mind[u],mind[v]+1);
	}
	if(w[u]) mind[u]=min(mind[u],disd[u]);
//	cout<<"finish dfs "<<u<<' '<<f<<' '<<disd[u]<<' '<<mind[u]<<'\n';
}
vector<int>tmp;
void dfs2(int u,int f){
//	cout<<"enter "<<u<<' '<<f<<'\n';
	int i,v,maxn;tmp.clear();
	disu[u]=max(disu[u],(f!=0)+disu[f]); 
	if(f) exc[u]=max(0,disu[u]-1);
//	cout<<"dfs2 "<<u<<' '<<exc[u]<<' '<<disu[u]<<'\n';
	maxn=-1;
	for(i=first[u];~i;i=a[i].next){
		v=a[i].to;if(v==f) continue;
		disu[v]=max(disu[v],maxn+1);
		maxn=max(maxn,disd[v]+1);
		tmp.push_back(v);
	}
	maxn=-1;
	for(i=tmp.size()-1;i>=0;i--){
		v=tmp[i];
		disu[v]=max(disu[v],maxn+1);
		maxn=max(maxn,disd[v]+1);
	}
	for(i=first[u];~i;i=a[i].next) if((v=a[i].to)!=f) dfs2(v,u);
}
char s[200010];
int main(){
	memset(first,-1,sizeof(first));int i,t1,t2,ans=0,u,v;
	n=read();
	for(i=1;i<n;i++){
		t1=read();t2=read();
		add(t1,t2);
	}
	scanf("%s",s);
	for(i=0;i<n;i++) w[i+1]=(s[i]=='1');
	dfs(1,0);dfs2(1,0);
	for(u=1;u<=n;u++){
		if(w[u]) low[u]=0;
		else low[u]=min(mind[u],(u==1)?inf:disu[u]);
		high[u]=max(disu[u],disd[u])-1;
		for(i=first[u];~i;i=a[i].next){
			v=a[i].to;
			if(v==fa[u]) high[u]=min(high[u],disd[u]+1);
			else high[u]=min(high[u],exc[v]+1);
		}
//		cout<<u<<' '<<high[u]<<' '<<low[u]<<'\n'; 
		if(high[u]>=low[u]) ans+=high[u]-low[u]+1;
	}
	printf("%d\n",ans+1);
}

Compiler output:
a.cc:44:1: error: 'vector' does not name a type
   44 | vector<int>tmp;
      | ^~~~~~
a.cc: In function 'void dfs2(int, int)':
a.cc:47:22: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   47 |         int i,v,maxn;tmp.clear();
      |                      ^~~
      |                      tm
Language: C++

#include<iostream>
using namespace std;
int main() {
	ll a, b;
	char op;
	cin >> a >> op >> b;
	if (op == '+')cout << a + b << endl;
	else cout << a - b << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:9: error: 'll' was not declared in this scope
    4 |         ll a, b;
      |         ^~
a.cc:6:16: error: 'a' was not declared in this scope
    6 |         cin >> a >> op >> b;
      |                ^
a.cc:6:27: error: 'b' was not declared in this scope
    6 |         cin >> a >> op >> b;
      |                           ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main()
{
	int A, B;
	string op;
	cin >> A >> op >> B;
	if (op = = "+")
	{
		cout << A + B << endl;
	}
	else
	{
		cout << A - B << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:18: error: expected primary-expression before '=' token
   10 |         if (op = = "+")
      |                  ^
Language: C++

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

int main(){
  string s;
  getline(cin, s);
  if(s.at(2) == "+"){
    cout << (int)s.at(0) + (int)s.at(4);
  }else{
    cout << (int)s.at(0) - (int)s.at(4);
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    7 |   if(s.at(2) == "+"){
      |      ~~~~~~~~^~~~~~
Language: Java

import java.util.*;
class Main{
	public static void main(String args[]){
    	Scanner s= new Scanner(System.in);
      	int a=s.nextInt();
      	String str=s.next().charAt(0);
      //System.out.println(str);
      	int b=s.nextInt();
      	
      if(str=='+'){
      	System.out.println(a+b);	
      }else{
      System.out.println(a-b);}
      
    }
}


Compiler output:
Main.java:6: error: incompatible types: char cannot be converted to String
      	String str=s.next().charAt(0);
      	                          ^
Main.java:10: error: bad operand types for binary operator '=='
      if(str=='+'){
            ^
  first type:  String
  second type: char
2 errors
Language: Java

import java.util.*;
class Main{
	public static void main(String args[]){
    	Scanner s= new Scanner(System.in);
      	String str=s.next();
      System.out.println(str);
      	int a=0;
       	int b=0;
      	int j=1;
      	char sym='';
      	for(int i=0;i<str.length();i++){
          	if(str.charAt(i)=='+' || str.charAt(i)=='-'){
            	int j=i;
              sym=str.charAt(i);
              break;
            }
        	a=a*10+str.charAt(i)-'0';
              
        }
         for(int i=j+1;i<str.length();i++){
          	
        	b=b*10+str.charAt(i)-'0';
        }
      if(sym=='+'){
      	System.out.println(a+b);	
      }else{
      System.out.println(a-b);}
      
    }
}

Compiler output:
Main.java:10: error: empty character literal
      	char sym='';
      	         ^
1 error
Language: C++

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

int main() {
  string s;
  int result;
  result = 0;
  
  getline(cin, s);
  if(s.at(2) == "+"){
    result = s.at(0) + s.at(4);
  }
  if(s.at(2) == "-"){
    result = s.at(0) - s.at(4);
  }
     cout << result << endl;       
    }


Compiler output:
a.cc: In function 'int main()':
a.cc:10:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   10 |   if(s.at(2) == "+"){
      |      ~~~~~~~~^~~~~~
a.cc:13:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   13 |   if(s.at(2) == "-"){
      |      ~~~~~~~~^~~~~~
Language: C++

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

int main() {
  string s;
  int result;
  getline(cin, s);
  if(s.at(2) == '+'){
    result = s.at(0) + s.at(4);
  }
  while{
    result = s.at(0) - s.at(4);
  }
     cout << result << endl;       
    }


Compiler output:
a.cc: In function 'int main()':
a.cc:11:8: error: expected '(' before '{' token
   11 |   while{
      |        ^
      |        (
a.cc:11:8: error: expected primary-expression before '{' token
a.cc:11:8: error: expected ')' before '{' token
   11 |   while{
      |        ^
      |        )
Language: C++

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

int main() {
  string s;
  int result;
  getline(cin, s);
  if(s.at(2) == '+'){
    result = s.at(0) + s.at(4)
  }
  while{
    reslt = s.at(0) - s.at(4)
  }
     cout << result << endl;       
    }


Compiler output:
a.cc: In function 'int main()':
a.cc:9:31: error: expected ';' before '}' token
    9 |     result = s.at(0) + s.at(4)
      |                               ^
      |                               ;
   10 |   }
      |   ~                            
a.cc:11:8: error: expected '(' before '{' token
   11 |   while{
      |        ^
      |        (
a.cc:11:8: error: expected primary-expression before '{' token
a.cc:11:8: error: expected ')' before '{' token
   11 |   while{
      |        ^
      |        )
a.cc:12:5: error: 'reslt' was not declared in this scope; did you mean 'result'?
   12 |     reslt = s.at(0) - s.at(4)
      |     ^~~~~
      |     result
Language: C

#include<stdio.h>
int main()
{
  int a,b;
  int op;
  scanf("%d%c%d",&a,&op,&b);
  if(op==+)
    printf("%d",a+b);
  else
    printf("%d",a-b);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:7:11: error: expected expression before ')' token
    7 |   if(op==+)
      |           ^
Language: C++

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

int main(){
  int A, B;
  string op;
  cin>>A>>op>>B;
  int ans;
  if(op=='+'){
    ans = A+B;
  }
  else{
    ans = A-B;
  }
  cout<<ans<<endl;
}

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

#include<iostream>
using namespace std;
int main(){
  int a,b;
  char c;
  cout<<a<<c<<b;
  
  if(c=="+")
    cout<<a+b;
  else
    cout<<a-b;
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:7: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    8 |   if(c=="+")
      |      ~^~~~~
Language: C++

#include<iostream>
#include<string>
using namespace std;
int main()
{
  int A,B;
  char C;
  cin>>A>>C>>B;
  if(C=='+'){
    cout<<A+B;
  }
  else(C=='-'){
    cout<<A-B;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:15: error: expected ';' before '{' token
   12 |   else(C=='-'){
      |               ^
      |               ;
Language: C++

#include <iostream>
#include <string>

using namespace std;

int main () {
  int a, op, b;
  cin >> a >> op >> b;
  if (a == '+')
    cout << a + b;
  else if (a == "-")
    cout << a - b;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:14: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   11 |   else if (a == "-")
      |            ~~^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
  int a,b;
  char op;
  cin >> a >> op >> b;
  if(op=='+')
    cout << a+b << endl;
  elase
    cout << a-b <<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:3: error: 'elase' was not declared in this scope
    9 |   elase
      |   ^~~~~
Language: C++

#include <bits/stdc++.h>
usng namespace std;
int main(){
  int a,b;
  char op;
  cin >> a >> op >> b;
  if(op=='+')
    cout << a+b << endl;
  elase
    cout << a-b <<endl;
}

Compiler output:
a.cc:2:1: error: 'usng' does not name a type
    2 | usng namespace 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 >> a >> op >> b;
      |   ^~~
      |   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:8:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |     cout << a+b << 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:8:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |     cout << a+b << endl;
      |                    ^~~~
      |                    std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:9:3: error: 'elase' was not declared in this scope
    9 |   elase
      |   ^~~~~
Language: C++

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

int main() {
    int a, b;
    string op;
    
    cin >> a >> op >> b;
    
    if (op == '+') {
        cout << a + b << endl;
    }
    
    if (op == '-') {
        cout << a - b << endl;
    }
}


Compiler output:
a.cc:1:2: error: stray '#' in program
    1 | k#include <bits/stdc++.h>
      |  ^
a.cc:1:1: error: 'k' does not name a type
    1 | k#include <bits/stdc++.h>
      | ^
a.cc: In function 'int main()':
a.cc:6:5: error: 'string' was not declared in this scope
    6 |     string op;
      |     ^~~~~~
a.cc:8:5: error: 'cin' was not declared in this scope
    8 |     cin >> a >> op >> b;
      |     ^~~
a.cc:8:17: error: 'op' was not declared in this scope
    8 |     cin >> a >> op >> b;
      |                 ^~
a.cc:11:9: error: 'cout' was not declared in this scope
   11 |         cout << a + b << endl;
      |         ^~~~
a.cc:11:26: error: 'endl' was not declared in this scope
   11 |         cout << a + b << endl;
      |                          ^~~~
a.cc:15:9: error: 'cout' was not declared in this scope
   15 |         cout << a - b << endl;
      |         ^~~~
a.cc:15:26: error: 'endl' was not declared in this scope
   15 |         cout << a - b << endl;
      |                          ^~~~
Language: C++

int main() {
  int A,B;
  char op;
  cin >> A >> op >> B;
  if(op=='+'){
    cout << A + B << endl;
  }
  if(op=='-'){
    cout << A - B << endl;
  }
  
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin >> A >> op >> B;
      |   ^~~
a.cc:6:5: error: 'cout' was not declared in this scope
    6 |     cout << A + B << endl;
      |     ^~~~
a.cc:6:22: error: 'endl' was not declared in this scope
    6 |     cout << A + B << endl;
      |                      ^~~~
a.cc:9:5: error: 'cout' was not declared in this scope
    9 |     cout << A - B << endl;
      |     ^~~~
a.cc:9:22: error: 'endl' was not declared in this scope
    9 |     cout << A - B << endl;
      |                      ^~~~
Language: C

#include<stdio.h>

int main(){
    int a,b;
    char op;
    scanf("%d%c%d".&a,&op,&b);

    int sum;
    if(op=='+'){
        sum=a+b;
    }else{
        sum=a-b;
    }
    printf("%d\n",sum);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:20: error: expected identifier before '&' token
    6 |     scanf("%d%c%d".&a,&op,&b);
      |                    ^
Language: C

#include<stdio.h>

int main(){
    int a,b;
    char op;
    scanf("%d%c%d".&a,&op,&b);

    if(op=='+'){
        int sum=a+b;
    }else{
        int sum=a-b;
    }
    printf("%d\n",sum);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:20: error: expected identifier before '&' token
    6 |     scanf("%d%c%d".&a,&op,&b);
      |                    ^
main.c:13:19: error: 'sum' undeclared (first use in this function)
   13 |     printf("%d\n",sum);
      |                   ^~~
main.c:13:19: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include "pch.h"
#include <iostream>
#include <string>
using namespace std;

int main() {
	int A, B, ans;
	string x;
	cin >> A >> x >> B;

	if (x == "+") {
		ans = A + B;
	}
	else if (x == "-") {
		ans = A - B;
	}
	cout << ans;
}

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

#include <iostream>
using namespace std;
 
int A, B;
char op;
cin >> A >> op >> B;
if ( op == '+' ){
  cout << A + B << '\n';
} else if ( op  == '-' ) {
  cout << A - B << '\n';
}

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin >> A >> op >> B;
      | ^~~
a.cc:7:1: error: expected unqualified-id before 'if'
    7 | if ( op == '+' ){
      | ^~
a.cc:9:3: error: expected unqualified-id before 'else'
    9 | } else if ( op  == '-' ) {
      |   ^~~~
Language: C++

#include <iostream>
using namespace std;
 
int  A,  B;
string  op;
cin  >>  A  >>  op  >>  B;
if  (  op  ==  "+"  ){
  cout  <<  A  +  B  <<  '\n';
}  else  if  (  op  ==  "-"  )  {
  cout  <<  A  -  B  <<  '\n';
}

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin  >>  A  >>  op  >>  B;
      | ^~~
a.cc:7:1: error: expected unqualified-id before 'if'
    7 | if  (  op  ==  "+"  ){
      | ^~
a.cc:9:4: error: expected unqualified-id before 'else'
    9 | }  else  if  (  op  ==  "-"  )  {
      |    ^~~~
Language: C++

#include <iostream>
using namespace std;
 
int  A,  B;
string  op;
cin  >>  A  >>  B  >>  op;
if  (  op  ==  "+"  ){
  cout  <<  A  +  B  <<  '\n';
}  else  if  (  op  ==  "-"  )  {
  cout  <<  A  -  B  <<  '\n';
}

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin  >>  A  >>  B  >>  op;
      | ^~~
a.cc:7:1: error: expected unqualified-id before 'if'
    7 | if  (  op  ==  "+"  ){
      | ^~
a.cc:9:4: error: expected unqualified-id before 'else'
    9 | }  else  if  (  op  ==  "-"  )  {
      |    ^~~~
Language: C++

#include <iostream>
using namespace std;
 
int  A,  B;
char  op;
cin  >>  A  >>  B  >>  op;
if  (  op  ==  '+'  ){
  cout  <<  A  +  B  <<  '\n';
}  else  if  (  op  ==  '-'  )  {
  cout  <<  A  -  B  <<  '\n';
}

Compiler output:
a.cc:6:1: error: 'cin' does not name a type
    6 | cin  >>  A  >>  B  >>  op;
      | ^~~
a.cc:7:1: error: expected unqualified-id before 'if'
    7 | if  (  op  ==  '+'  ){
      | ^~
a.cc:9:4: error: expected unqualified-id before 'else'
    9 | }  else  if  (  op  ==  '-'  )  {
      |    ^~~~