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

#include<stdio.h>
#include<math.h>
#include<algorithm>
#include<queue>
#include<deque>
#include<string>
#include<string.h>
#include<vector>
#include<set>
#include<map>
#include<stdlib.h>
#include<cassert>
using namespace std;
const long long mod=1000000009;
const long long inf=mod*mod;
const long long d2=500000004;
const double EPS=1e-10;
const double PI=acos(-1.0);
int ABS(int a){return max(a,-a);}
long long ABS(long long a){return max(a,-a);}
vector<pair<int,long long> >g[110000];
int sz[110000];
long long ret=0;
long long mm;
bool ng=false;
int N;
int V=0;
void dfs(int a,int b){
    sz[a]=1;
    for(int i=0;i<g[a].size();i++){
        if(b==g[a][i].first)continue;
        dfs(g[a][i].first,a);
        sz[a]+=sz[g[a][i].first];
        ret+=g[a][i].second*min(sz[g[a][i].first],N-sz[g[a][i].first]);
        V=max(V,min(sz[g[a][i].first],N-sz[g[a][i].first]));
       // if(ABS(sz[g[a][i].first]==N-sz[g[a][i].first]){
         //   mm=g[a][i].second;ng=true;
       // }
       // if(ABS(sz[g[a][i].first]-(N-sz[g[a][i].first]))<=1){
        //    mm=min(mm,g[a][i].second);
       // }
    }
}
void dfs2(int a,int b){
    for(int i=0;i<g[a].size();i++){
        if(b==g[a][i].first)continue;
        dfs2(g[a][i].first,a);
        if(V==min(sz[g[a][i].first],N-sz[g[a][i].first])){
            mm=min(mm,g[a][i].second);
        }
       // if(ABS(sz[g[a][i].first]==N-sz[g[a][i].first]){
         //   mm=g[a][i].second;ng=true;
       // }
       // if(ABS(sz[g[a][i].first]-(N-sz[g[a][i].first]))<=1){
        //    mm=min(mm,g[a][i].second);
       // }
    }
}
int main(){
    int a;scanf("%d",&a);
    N=a;
    mm=mod;
    for(int i=0;i<a-1;i++){
        int p,q;long long r;scanf("%d%d%lld",&p,&q,&r);
        p--;q--;g[p].push_back(make_pair(q,r));g[q].push_back(make_pair(p,r));
    }
    if(a==2){
        printf("%lld\n",g[0][0].second);return 0;
    }
    int par=0;
    for(int i=0;i<a;i++){
        if(g[i].size()>1)par=i;
    }
    dfs(par,-1);
   // dfs2(par,-1);
    for(int i=0;i<a;i++){
        if(min(sz[i],N-sz[i])==V){
            for(int j=0;j<g[a][i].size();j++){
                mm=min(mm,g[i][j].second);
            }
        }
    }
    ret*=2;
    ret-=mm;
    printf("%lld\n",ret);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:78:35: error: '__gnu_cxx::__alloc_traits<std::allocator<std::pair<int, long long int> >, std::pair<int, long long int> >::value_type' {aka 'struct std::pair<int, long long int>'} has no member named 'size'
   78 |             for(int j=0;j<g[a][i].size();j++){
      |                                   ^~~~
Language: C++

#include<cmath>
#include<ctime>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<iostream>
#include<algorithm>
#define mem(a,b) memset(a,b,sizeof(a))
#define  For(i,a,b) for(int i=a,i##E=b;i<=i##E;++i)
#define rFor(i,a,b) for(int i=a,i##E=b;i>=i##E;--i)
using namespace std;
typedef long long LL;
const int N=200010;
const int inf=0x3f3f3f3f;
template<typename T>inline T chkmax(T A,T B){return A>B?A:B;}
template<typename T>inline T chkmin(T A,T B){return A<B?A:B;}
template<typename T>inline void read(T &x)
{
	x=0;int _f(0);char ch=getchar();
	while(!isdigit(ch))_f|=(ch=='-'),ch=getchar();
	while( isdigit(ch))x=x*10+ch-'0',ch=getchar();
	x=_f?-x:x;
}
inline void file()
{
#ifndef ONLINE_JUDGE
	freopen("in.txt","r",stdin);
	freopen("out.txt","w",stdout);
#endif
}
int n;
int bgn[N],nxt[N],to[N],E;
LL w[N],ans,Min;
int sz[N],flag;
inline void add_edge(int u,int v,int ew){nxt[++E]=bgn[u],bgn[u]=E,to[E]=v,w[E]=ew;}
inline void dfs(int u,int f,LL ew)
{
	sz[u]=1;
	for(int v,i=bgn[u];i;i=nxt[i])
	{
		if((v=to[i])==f)continue;
		dfs(v,u,w[i]);
		sz[u]+=sz[v];
	}
	if(sz[u]==n-sz[u])
	{
		flag=1;
		ans-=ew;
	}
	ans+=(LL)chkmin(sz[u],n-sz[u])*ew*2ll;
}
int main()
{
	int x,y,z;
	read(n);
	Min=inf;
	For(i,2,n)
	{
		read(x),read(y),read(z);
		add_edge(x,y,z),add_edge(y,x,z);
		Min=chkmin(Min,z);
	}
	dfs(1,0,0);
	if(!flag)ans-=Min;
	printf("%lld\n",ans);
	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:61:27: error: no matching function for call to 'chkmin(LL&, int&)'
   61 |                 Min=chkmin(Min,z);
      |                     ~~~~~~^~~~~~~
a.cc:16:30: note: candidate: 'template<class T> T chkmin(T, T)'
   16 | template<typename T>inline T chkmin(T A,T B){return A<B?A:B;}
      |                              ^~~~~~
a.cc:16:30: note:   template argument deduction/substitution failed:
a.cc:61:27: note:   deduced conflicting types for parameter 'T' ('long long int' and 'int')
   61 |                 Min=chkmin(Min,z);
      |                     ~~~~~~^~~~~~~
Language: C++

#include <bits/stdc++.h>
#define mod 1000000007
#define semn(i) (i == 0 || i == 3 ? 1 : -1)
using namespace std;

const int NMAX = 1e6 + 5;
int st, dr, up, down;
int fact[2 * NMAX + 10], invfact[2 * NMAX + 10];

inline add(int & a, int b)
{
    a = a + b;
    if (a < 0)
        a += mod;
    if (a > mod)
        a -= mod;
}
int put(int n, int p)
{
    int ans = 1;
    while (p) {
        if (p & 1)
            ans = 1ll * ans * n % mod;
        n = 1ll * n * n % mod;
        p >>= 1;
    }
    return ans;
}
void precalc()
{
    fact[0] = 1;
    for (int i(1); i <= 2 * NMAX; i++)
        fact[i] = 1ll * fact[i - 1] * i % mod;
    invfact[2 * NMAX] = put(fact[2 * NMAX], mod - 2);

    for (int i(2 * NMAX - 1); i >= 0; i--)
        invfact[i] = 1ll * invfact[i + 1] * (i + 1) % mod;
}
inline int comb(int a, int b)
{
    if (a < 0 || b < 0 || a < b)
        return 0;
    return 1ll * fact[a] * invfact[b] % mod * invfact[a - b] % mod;
}
inline int moduri(int x1, int y1, int x2, int y2)
{
    return comb(abs(x1 - x2) + abs(y1 - y2), abs(x1 - x2));
}
inline int dist(int x1, int y1, int x2, int y2)
{
    return abs(x1 - x2) + abs(y1 - y2);
}
int solve(int x1, int y1, int x2, int y2)
{
    int ans = 0;
    for (int i(up); i <= down; i++) {
        add(ans, 1ll * dist(x1, y1, i, dr) * moduri(x1, y1, i, dr) % mod * moduri(i, dr + 1, x2, y2) % mod);
        add(ans, -1ll * dist(x1, y1, i, st - 1) * moduri(x1, y1, i, st - 1) % mod * moduri(i, st, x2, y2) % mod);
    }
    for (int i(st); i <= dr; i++) {
        add(ans, 1ll * dist(x1, y1, down, i) * moduri(x1, y1, down, i) % mod * moduri(down + 1, i, x2, y2) % mod);
        add(ans, -1ll * dist(x1, y1, up - 1, i) * moduri(x1, y1, up - 1, i) % mod * moduri(up, i, x2, y2) % mod);
    }
    return ans;
}

int main()
{
    precalc();

if (1) {

    vector <pair <int, int>> first(4), last(4);

    cin >> first[0].first >> first[2].first >> up >> down >> last[0].first >> last[2].first;
    first[0].first--;
    first[1].first = first[0].first;
    first[3].first = first[2].first;

    last[2].first++;
    last[1].first = last[0].first;
    last[3].first = last[2].first;

    cin >> first[0].second >> first[1].second >> st >> dr >> last[0].second >> last[1].second;
    first[0].second--;
    first[2].second = first[0].second;
    first[3].second = first[1].second;

    last[1].second++;
    last[2].second = last[0].second;
    last[3].second = last[1].second;

    int ans = 0;

    for (int i(0); i < 4; i++)
        for (int j(0); j < 4; j++)
            add(ans, semn(i) * semn(j) * solve(first[i].first, first[i].second, last[j].first, last[j].second));

    cout << ans;

    return 0;

}

    up = down = st = dr = 1;
    cout << solve(0, 0, 2, 2);

    return 0;
}


Compiler output:
a.cc:10:8: error: ISO C++ forbids declaration of 'add' with no type [-fpermissive]
   10 | inline add(int & a, int b)
      |        ^~~
a.cc: In function 'int add(int&, int)':
a.cc:17:1: warning: no return statement in function returning non-void [-Wreturn-type]
   17 | }
      | ^
Language: C++

#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cstring>
#include <ctime>
#include <algorithm>
#include <vector>
#include <set>
#include <queue>
#include <map>
#include <stack>
#include <bitset>
using namespace std;
typedef long long LL;
LL gi () {
    LL ret=0; char ch=getchar();
    while((ch<'0' || ch>'9') && ch!='-') ch=getchar();
    char c=ch=='-'?getchar():ch;
    while(c>='0' && c<='9') ret=ret*10+c-'0',c=getchar();
    return ch=='-'?-ret:ret;
}
const int N = 2000000 + 10;
const int mo = 1e9 + 7;
int n,x1,x2,x3,x4,x5,x6,y1,y2,y3,y4,y5,y6;
LL fac[N],ifc[N];
LL ksm (LL a,LL b) {
    LL ret = 1;
    while(b) {
        if(b&1) ret = ret * a %mo;
        a = a * a %mo; b >>= 1;
    }
    return ret;
}
LL calc (int x,int y) {
    return (fac[x+y+2] * ifc[x+1] %mo * ifc[y+1] %mo - 1) %mo;
}
LL calc1 (int i,int j) {
    return (calc(i-x1,j-y1) - calc(i-x1,j-y2-1) - calc(i-x2-1,j-y1) + calc(i-x2-1,j-y2-1)ng) %mo;
}
LL calc2 (int i,int j) {
    return (calc(x6-i,y6-j) - calc(x6-i,y5-j-1) - calc(x5-i-1,y6-j) + calc(x5-i-1,y5-j-1)) %mo;
}
int main () {
    x1 = gi(); x2 = gi(); x3 = gi(); x4 = gi(); x5 = gi(); x6 = gi();
    y1 = gi(); y2 = gi(); y3 = gi(); y4 = gi(); y5 = gi(); y6 = gi();
    fac[0] = 1;
    for(int i=1;i<N;i+=1) fac[i] = fac[i-1] * i %mo;
    ifc[N-1] = ksm(fac[N-1],mo-2);
    for(int i=N-2;i>=0;i-=1) ifc[i] = ifc[i+1] * (i+1) %mo;
    LL ans = 0;
    for(int x=x3;x<=x4;x+=1) {
        ans = (ans + (-x-y3) * calc1(x,y3-1) %mo * calc2(x,y3) %mo) %mo;
        ans = (ans + (x+y4+1) * calc1(x,y4) %mo * calc2(x,y4+1) %mo) %mo;
    }
    for(int y=y3;y<=y4;y+=1) {
        ans = (ans + (-y-x3) * calc1(x3-1,y) %mo * calc2(x3,y) %mo) %mo;
        ans = (ans + (y+x4+1) * calc1(x4,y) %mo * calc2(x4+1,y) %mo) %mo;
    }
    cout << (ans+mo) %mo;
    return 0;
}


Compiler output:
a.cc:24:25: warning: built-in function 'y1' declared as non-function [-Wbuiltin-declaration-mismatch]
   24 | int n,x1,x2,x3,x4,x5,x6,y1,y2,y3,y4,y5,y6;
      |                         ^~
a.cc: In function 'LL calc1(int, int)':
a.cc:38:90: error: expected ')' before 'ng'
   38 |     return (calc(i-x1,j-y1) - calc(i-x1,j-y2-1) - calc(i-x2-1,j-y1) + calc(i-x2-1,j-y2-1)ng) %mo;
      |            ~                                                                             ^~
      |                                                                                          )
Language: C++

#pragma comment(linker, "/STACK:102400000,102400000")
#include<bits/stdc++.h>
using namespace std;
int n;
int fa[200200];
int d[200200];
int rt1,rt2;

int te;
struct data{
	int to,pre,nxt,id;
}mp[1000100];
int head[200200],cnt;
void link(int x,int y,int id)
{
	mp[++cnt].to=y;
	mp[cnt].id=id;
	mp[cnt].nxt=head[x];
	mp[head[x]].pre=cnt;
	head[x]=cnt;
}

int ans[200200];
bool del[500500];
int sta[500500][2],top;
void dfs(int x)
{
	sta[++top][0]=s;
	sta[top][1]=1;
	int x,v;
	while(top)
	{
		x=sta[top][0];
		int fl=1;
		if(sta[top][1]==1)
		{
			for(int i=head[x];i;i=mp[i].nxt)
			{
				if(del[mp[i].id])continue;
				del[mp[i].id]=1;
				head[x]=mp[i].nxt;
				fl=0;
				v=mp[i].to;
				sta[++top][0]=v;
				sta[top][1]=1;
				if(x<=n&&v>n)ans[x]=ans[v]=-1;
				else if(x>n&&v<=n)ans[x]=ans[v]=1;
				break;
			}
			if(fl)
			{
				sta[top][1]=2;
				break;
			}
		}
		else top--;
	}
	/*
	int v;
	for(int i=head[x];i;i=mp[i].nxt)
	{
		if(del[mp[i].id])
		{
			if(mp[i].pre)mp[mp[i].pre].nxt=mp[i].nxt;
			if(mp[i].nxt)mp[mp[i].nxt].pre=mp[i].pre;
			continue;
		}
		del[mp[i].id]=1;
		if(mp[i].pre)mp[mp[i].pre].nxt=mp[i].nxt;
		if(mp[i].nxt)mp[mp[i].nxt].pre=mp[i].pre;
		v=mp[i].to;
		if(x<=n&&v>n)ans[x]=ans[v]=-1;
		else if(x>n&&v<=n)ans[x]=ans[v]=1;
		dfs(v);
	}
	*/
}
void getd(int x)
{
	for(int i=head[x];i;i=mp[i].nxt)
		if(mp[i].to!=fa[x])
		{
			d[x]++;
			getd(mp[i].to);
		}
}
int main()
{
	scanf("%d",&n);
	for(int i=1;i<=n;++i)
	{
		scanf("%d",&fa[i]);
		if(fa[i]==-1){rt1=i;continue;}
		++te;
		link(fa[i],i,te);
		link(i,fa[i],te);
	}
	for(int i=n+1;i<=n+n;++i)
	{
		scanf("%d",&fa[i]);
		if(fa[i]==-1){rt2=i;continue;}
		++te;
		fa[i]+=n;
		link(fa[i],i,te);
		link(i,fa[i],te);
	}
	getd(rt1);
	getd(rt2);
	for(int i=1;i<=n;++i)
	{
		if((d[i]&1)!=(d[i+n]&1))
		{
			puts("IMPOSSIBLE");
			return 0;
		}
		if(!(d[i]&1))
		{
			++te;
			link(i,i+n,te);
			link(i+n,i,te);
		}
	}
	dfs(1);
	puts("POSSIBLE");
	for(int i=1;i<=n;++i)printf("%d ",ans[i]);puts("");
	return 0;
}


Compiler output:
a.cc: In function 'void dfs(int)':
a.cc:28:23: error: 's' was not declared in this scope
   28 |         sta[++top][0]=s;
      |                       ^
a.cc:30:13: error: declaration of 'int x' shadows a parameter
   30 |         int x,v;
      |             ^
a.cc:26:14: note: 'int x' previously declared here
   26 | void dfs(int x)
      |          ~~~~^
Language: C++

#include <algorithm>
#include <cstdio>

using namespace std ;

const int N=2e6+10 ;

int to[N<<2] , nxt[N<<2] , v[N<<2] ;
int lst[N<<1] ;
inline void add ( int u , int v )
{
	static int cnt=1 ;
	++cnt,to[cnt]=v,nxt[cnt]=lst[u],lst[u]=cnt,
	++cnt,to[cnt]=u,nxt[cnt]=lst[v],lst[v]=cnt;
}

int sz[N<<1] ;

int fa[N<<1] , sa , sb ;
int da[N<<1] , db[N<<1] ;
int n ;

int ans[N<<1] ;
inline void Euler ( int x )
{
	for ( int &i=lst[x] ; i ; i=e[i].nxt ) 
		if ( !e[i].v ) 
		{
			// printf("From %d to %d\n",x,e[i].to);
			if ( to[i]==x+n ) ans[x]=1;
			if ( to[i]==x-n ) ans[x-n]=-1;
			v[i]=v[i^1]=1,Euler(e[i].to);
		}
	return ;
}

int main ()
{
	freopen("nitai.in","r",stdin);
	freopen("nitai.out","w",stdout);
	int i ;
	scanf("%d",&n);
	for ( i=1 ; i<=n ; i++ ) 
	{
		scanf("%d",fa+i);
		if ( ~fa[i] ) 
			add(i,fa[i]),
			da[fa[i]]^=1;
		sa=(~fa[i]?sa:i);
	}
	for ( i=1 ; i<=n ; i++ ) 
	{
		scanf("%d",fa+n+i);
		if ( ~fa[i+n] ) 
			add(i+n,fa[i+n]+n),
			db[fa[i+n]]^=1;
		sb=(~fa[i+n]?sb:i+n);
	}
	for ( i=1 ; i<=n ; i++ ) 
		if ( da[i]^db[i] ) 
			return puts("IMPOSSIBLE")*0;
	// for ( i=1 ; i<=n ; i++ ) 
	// 	printf("%d ",v[i]); puts("");
	for ( i=1 ; i<=n ; i++ ) 
		if ( !da[i] ) add(i,i+n);
	int S=2*n+1 ;
	add(S,sa),add(S,sb);
	Euler(S);
	puts("POSSIBLE");
	for ( i=1 ; i<=n ; i++ ) 
		printf("%d ",ans[i]);
	return 0 ;
}

Compiler output:
a.cc: In function 'void Euler(int)':
a.cc:26:37: error: 'e' was not declared in this scope
   26 |         for ( int &i=lst[x] ; i ; i=e[i].nxt )
      |                                     ^
Language: C++

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

const int N = 1e5 + 100;

int n, fa[N], fb[N], is_odd[2][N];

struct Edge {
    int e, *h, *nx, *to, V, E;
    Edge(int V, int E):V(V), E(E) {
        e = 0;
        h = new int [V];
        nx = new int [E];
        to = new int [E];
        memset(h, -1, 4 * V);
    }
    ~Edge() {
        delete h;
        delete nx;
        delete to;
    }
    void clear() {
        e = 0;
        memset(h, -1, 4 * V);
    }
    void add(int u, int v) {
        to[e] = v, nx[e] = h[u], h[u] = e++;
        to[e] = u, nx[e] = h[v], h[v] = e++;
    }
} *tr, *bi;

int dfs(int u, int f) {
    vector<int> odd_son;
    for (int i = tr->h[u]; i != -1; i = tr->nx[i]) {
        int v = tr->to[i];
        if (v != f) {
            v = dfs(v, u);
            if (v != 0)
                odd_son.push_back(v);
            else cassert(false);
        }
    }
    if (!is_odd[0][u])
        odd_son.push_back(u);
    for (int i = 0; i < (int)odd_son.size() - 1; i += 2) {
        bi->add(odd_son[i], odd_son[i + 1]);
    }
    return odd_son.size() % 2 == 0 ? 0 : odd_son.back();
}

bool vis[N], col[N];

void coloring(int u, int c) {
    vis[u] = true;
    col[u] = c;
    for (int i = bi->h[u]; i != -1; i = bi->nx[i]) {
        int v = bi->to[i];
        if (!vis[v])
            coloring(v, c ^ 1);
    }
}

int main() {
#ifdef lol
    freopen("f.in", "r", stdin);
    freopen("f.out", "w", stdout);
#endif

    scanf("%d", &n);
    for (int i = 1; i <= n; ++i) {
        scanf("%d", &fa[i]);
        if (fa[i] != -1) {
            is_odd[0][fa[i]] ^= 1;
        }
    }
    for (int i = 1; i <= n; ++i) {
        scanf("%d", &fb[i]);
        if (fb[i] != -1)
            is_odd[1][fb[i]] ^= 1;
    }
    for (int i = 1; i <= n; ++i) {
        if (is_odd[0][i] ^ is_odd[1][i]) {
            puts("IMPOSSIBLE");
            return 0;
        }
    }
    tr = new Edge(n + 1, (n + 1) * 2);
    bi = new Edge(n + 10, (n + 10) * 4);
    int rt;
    for (int i = 1; i <= n; ++i) {
        if (fa[i] == -1) {
            rt = i;
            continue;
        }
        tr->add(i, fa[i]);
    }
    dfs(rt, -1);
    tr->clear();
    for (int i = 1; i <= n; ++i) {
        if (fb[i] == -1) {
            rt = i;
            continue;
        }
        tr->add(i, fb[i]);
    }
    dfs(rt, -1);
    for (int i = 1; i <= n; ++i)
        if (!vis[i]) {
            coloring(i, 1);
        }
    puts("POSSIBLE");
    for (int i = 1; i <= n; ++i) {
        if (is_odd[0][i]) {
            printf("%d ", 0);
        } else {
            printf("%d ", col[i] ? 1 : -1);
        }
    }
    puts("");

    return 0;
}

Compiler output:
a.cc: In function 'int dfs(int, int)':
a.cc:40:18: error: 'cassert' was not declared in this scope; did you mean 'assert'?
   40 |             else cassert(false);
      |                  ^~~~~~~
      |                  assert
Language: C++

#include<bits/stdc++.h>
using namespace std;
int n,RT1,RT2,ff,S;
int tot=1,head[200005],nx[600005],to[600005];
int ru[200005],bj[300005],tt[100005];
struct FastIO {
	static const int S = 1e7;
	int wpos;
	char wbuf[S];
	FastIO() : wpos(0) {}
	inline int xchar() {
		static char buf[S];
		static int len = 0, pos = 0;
		if (pos == len)
			pos = 0, len = fread(buf, 1, S, stdin);
		if (pos == len) exit(0);
		return buf[pos++];
	}
	inline int xuint() {
		int c = xchar(), x = 0;
		while (c <= 32) c = xchar();
		for (; '0' <= c && c <= '9'; c = xchar()) x = x * 10 + c - '0';
		return x;
	}
	inline int xint() {
		int s = 1, c = xchar(), x = 0;
		while (c <= 32) c = xchar();
		if (c == '-') s = -1, c = xchar();
		for (; '0' <= c && c <= '9'; c = xchar()) x = x * 10 + c - '0';
		return x * s;
	}
	inline void xstring(char *s) {
		int c = xchar();
		while (c <= 32) c = xchar();
		for (; c > 32; c = xchar()) * s++ = c;
		*s = 0;
	}
	inline void wchar(int x) {
		if (wpos == S) fwrite(wbuf, 1, S, stdout), wpos = 0;
		wbuf[wpos++] = x;
	}
	inline void wint(ll x) {
		if (x < 0) wchar('-'), x = -x;
		char s[24];
		int n = 0;
		while (x || !n) s[n++] = '0' + x % 10, x /= 10;
		while (n--) wchar(s[n]);
		wchar('\n');
	}
	inline void wstring(const char *s) {
		while (*s) wchar(*s++);
	}
	~FastIO() {
		if (wpos) fwrite(wbuf, 1, wpos, stdout), wpos = 0;
	}
}io;
void jia(int aa,int bb)
{
	tot++;
	nx[tot]=head[aa];
	to[tot]=bb;
	head[aa]=tot;
	return;
}
void oula(int rt)
{
	for(int i=head[rt];i;i=nx[i])
	if(!bj[i/2])
	{
		int yy=to[i];
		bj[i/2]=yy;
		oula(yy);
	}
	return;
}
int main()
{
	n=io.xint();
	for(int i=1;i<=n;++i)
	{
		int x=io.xint();
		if(x==-1) {RT1=i;continue;}
		jia(i,x);jia(x,i);
		ru[i]^=1;ru[x]^=1;
	}
	ru[RT1]^=1;
	for(int i=1;i<=n;++i)
	{
		int x=io.xint();
		if(x==-1) {RT2=i+n;continue;}
		jia(i+n,x+n);jia(x+n,i+n);
		ru[i+n]^=1;ru[x+n]^=1;
	}
	ru[RT2]^=1;
	for(int i=1;i<=n;++i) if(ru[i]!=ru[i+n]) ff=1;
	if(ff) {puts("IMPOSSIBLE");return 0;}
	puts("POSSIBLE");
	S=n*2+1;
	for(int i=1;i<=n;++i)
	if(ru[i]) jia(i,i+n),tt[i]=tot/2,jia(i+n,i);
	jia(S,RT1);jia(RT1,S);
	jia(RT2,S);jia(S,RT2);
	oula(S);
	for(int i=1;i<=n;++i) 
	if(ru[i]) 
	{
		if(bj[tt[i]]>n) printf("1 ");
		else printf("-1 ");
	}
	else printf("0 ");
	return 0;
}

Compiler output:
a.cc:42:26: error: 'll' has not been declared
   42 |         inline void wint(ll x) {
      |                          ^~
Language: C++

/*
对于每棵树，都满足每个点的子树点权和在mod 2意义下是1，所以可以从下往上递推出每个点权的奇偶性。需要满足每个点在两棵树中奇偶性相同，否则无解 
更具体地，当一个点有偶数个儿子时点权mod 2 = 1，有奇数个儿子时点权mod 2 = 0
有这么一种构造方法，只要令偶数点权 = 0，奇数点权 = +1或-1即可构造出解。具体如下（称点权mod 2 = 1的点为奇点）： 
选择任意一个奇点为特殊点。对于两棵树，首先从下往上进行匹配
匹配到点u时，每个子树中会多出一个奇点，包括u本身如果是奇点也算在内，会有2k + 1个奇点
这些点中如果有特殊点就去掉特殊点，否则去掉任意一个点。对于剩下的点，任意两两匹配。如果匹配了x和y就连一条无向边(x, y)。被去掉的点就是该子树多出来的点 
进行了这样的匹配操作后，显然有：
(1)任意u的子树中有2k + 1个奇点，其中有k对奇点两两匹配，被去掉的点就是在u处匹配时被去掉的点
(2)特殊点在两棵树中都没有参与匹配，度数 = 0
(3)非特殊点的奇点在两棵树中都恰好参与一次匹配，度数 = 2
图由若干个环构成，同时一个点连接的两条边是在不同的树中的匹配，所以每个环都是偶环，该图是二分图。令黑点权值 = +1，白点权值 = -1
进行这样的操作后，每一对匹配的点权和是0，每个子树的点权和由该子树中多出来的点决定。显然也就完成了构造 
*/

#include <cstdio>
#include <algorithm>

using namespace std;
const int Max_N(100050);

int N, spe, Father[Max_N], Dist[Max_N];

int Get_Father(int x)
{
	if (Father[x] == x)
		return x;
	int root(Get_Father(Father[x]));
	Dist[x] ^= Dist[Father[x]];
	return Father[x] = root;
}

inline void merge(int u, int v)
{
	int x = Get_Father(u), y = Get_Father(v);
	if (x == y)
		return;
	Dist[y] = (Dist[v] ^ Dist[u] ^ 1), Father[y] = u;
}

struct T
{
	int root, Head[Max_N], Total, To[Max_N], Next[Max_N], Son[Max_N];
	inline void Add_Edge(int s, int t)
	{
		++Total, To[Total] = t, Next[Total] = Head[s], Head[s] = Total;
	}
	void init()
	{
		for (int i = 1, fa;i <= N;++i)
		{
			scanf("%d", &fa);
			if (fa == -1)
				root = i;
			else
				Add_Edge(fa, i), ++Son[fa];
		}
	}
	int work(int u)
	{
		vector<int> All;
		for (int i = Head[u];i;i = Next[i])
			All.push_back(work(To[i]));
		if ((Son[u] & 1) == 0)
			All.push_back(u);
		sort(All.begin(), All.end());
		for (int i = 1;i < All.size();i += 2)
			merge(All[i], All[i + 1]);
		return All[0];
	}
};
T A, B;

int main()
{
	scanf("%d", &N), A.init(), B.init();
	for (int i = 1;i <= N;++i)
	{
		Father[i] = i, Dist[i] = 0;
		if ((A.Son[i] & 1) != (B.Son[i] & 1))
		{
			puts("IMPOSSIBLE");
			return 0;
		}
	}
	puts("POSSIBLE");
	for (int i = 1;i <= N;++i)
		if ((A.Son[i] & 1) == 0)
		{
			spe = i;
			break;
		}
	A.work(A.root), B.work(B.root);
	for (int i = 1;i <= N;++i)
		if ((A.Son[i] & 1) == 0)
			printf("%d ", (Get_Father(i), Dist[i]) ? +1 : -1);
		else
			printf("%d ", 0);
	return 0;
}

Compiler output:
a.cc: In member function 'int T::work(int)':
a.cc:61:17: error: 'vector' was not declared in this scope
   61 |                 vector<int> All;
      |                 ^~~~~~
a.cc:18:1: note: 'std::vector' is defined in header '<vector>'; this is probably fixable by adding '#include <vector>'
   17 | #include <algorithm>
  +++ |+#include <vector>
   18 | 
a.cc:61:24: error: expected primary-expression before 'int'
   61 |                 vector<int> All;
      |                        ^~~
a.cc:63:25: error: 'All' was not declared in this scope
   63 |                         All.push_back(work(To[i]));
      |                         ^~~
a.cc:65:25: error: 'All' was not declared in this scope
   65 |                         All.push_back(u);
      |                         ^~~
a.cc:66:22: error: 'All' was not declared in this scope
   66 |                 sort(All.begin(), All.end());
      |                      ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define llu unsigned long long
#define ld double
#define llu unsigned long long
#define rep(i,x,y)  for(int i=int(x);i<int(y);++i)
#define For(i,x,y)  for(int i=int(x);i<=int(y);++i)
#define FOr(i,x,y)  for(int i=int(x);i>=int(y);--i)
#define pi acos(-1) 
#define mk make_pair
#define pa pair<ll,ll>
#define lf else if
#define IL inline
#define max(x,y)    ((x)<(y)?(y):(x))
#define min(x,y)    ((x)<(y)?(x):(y))
#define sqr(x)      ((x)*(x))
#define Mul(x,y)    ((x)=1LL*(x)*(y)%mod)
#define Add(x,y)    ((x)=((x)+(y))%mod)
#define Max(x,y)    ((x)=((x)<(y)?(y):(x)))
#define Min(x,y)    ((x)=((x)>(y)?(y):(x)))
#define E(x)        return writeln(x),0
#define LL			(long long)
#define p(x)        printf("~%lld~\n",LL(x))
#define pp(x,y)     printf("~~%lld %lld~~\n",LL(x),LL(y))
#define ppp(x,y,z)  printf("~~~%lld %lld %lld~~~\n",LL(x),LL(y),LL(z))
#define pppp(a,b,c,d)	printf("~~~%lld %lld %lld %lld\n",LL(a),LL(b),LL(c),LL(d))
#define f_in(x)     freopen(x".in","r",stdin)
#define f_out(x)    freopen(x".out","w",stdout)
#define open(x)     f_in(x),f_out(x)
#define fi first
#define se second
#define GuYue		puts("\nGuYueNa________________________________________________________________________________")
typedef complex<double> E;
namespace SHENZHEBEI{
#ifdef LOCAL
    struct _{_(){freopen("cf.in","r",stdin);}}_; 
#endif 
#define NEG 1
    static const int GYN=2333333;
    char SZB[GYN],*SS=SZB,*TT=SZB;
    inline char gc(){   if (SS==TT){  TT=(SS=SZB)+fread(SZB,1,GYN,stdin); if (SS==TT) return '\n';  }   return *SS++;    }
#if NEG
    inline ll read(){    ll x=0,g=1; char ch=gc();   for (;!isdigit(ch);ch=gc()) if (ch=='-') g=-1;  for (;isdigit(ch);ch=gc())  x=x*10-48+ch;   return x*g; }
    inline void write(ll x){    if (x<0) putchar('-'),x=-x;  if (x>=10)   write(x/10);    putchar(x%10+'0');  }
#else
    inline ll read(){    ll x=0; char ch=gc();   for (;!isdigit(ch);ch=gc());    for (;isdigit(ch);ch=gc())  x=x*10-48+ch;   return x;   }
    inline void write(ll x){    if (x>=10)   write(x/10);    putchar(x%10+'0');  }
#endif
    inline char readchar(){ char ch=gc();   for(;isspace(ch);ch=gc());  return ch;  }
    inline ll readstr(char *s){ char ch=gc();   int cur=0;  for(;isspace(ch);ch=gc());      for(;!isspace(ch);ch=gc())  s[cur++]=ch;    s[cur]='\0';    return cur; }
	void Print(long long *a,int s,int t){For(i,s,t)printf("%lld ",a[i]);}
	void Print(int *a,int s,int t){For(i,s,t)printf("%d ",a[i]);}
	void Print(char *a,int s,int t){For(i,s,t)putchar(a[i]);}
	void writeln(ll x){write(x);puts("");}
}using namespace SHENZHEBEI;
void dfs
int main(){
	n=read();
	For(i,1,n)fa[0][i]=read(),rt[0]=fa[i][0]==-1?i:rt[0],g[0][fa[0][i]].push_back(i);
	For(i,1,n)fa[1][i]=read(),rt[1]=fa[i][1]==-1?i:rt[1],g[1][fa[1][i]].push_back(i);
	Dfs(rt[0],0);
}
/*
4---3---2
|	|
|	|
5	1


4---2
|
|
1---4	
|
|
3
每个子树中。。
*/

Compiler output:
a.cc:58:1: error: expected initializer before 'int'
   58 | int main(){
      | ^~~
Language: C++

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

using namespace std;
using namespace __gnu_pbds;
 
#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define fbo find_by_order
#define ook order_of_key
 
typedef long long ll;
typedef pair<int,ll> ii;
typedef vector<int> vi;
typedef long double ld; 
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> pbds;
typedef set<ll>::iterator sit;
typedef map<ll,ll>::iterator mit;

vi adj[100001];
vi adj2[100001];
int dp[100001];
int dp2[100001];
int ans[100001];
int ans2[100001];

void dfs(int u, int p)
{
	dp[u]=1;
	int cur=-1;
	for(int i=0;i<adj[u].size();i++)
	{
		int v=adj[u][i];
		if(v==p) continue;
		dp[u]^=1;
		dfs(v,u);
		if(dp[v]) 
		{
			ans[v]=cur;
			cur*=-1;
		}
	}
}

void dfs2(int u, int p)
{
	dp2[u]=1;
	int cur=-1;
	for(int i=0;i<adj2[u].size();i++)
	{
		int v=adj2[u][i];
		if(v==p) continue;
		//cerr<<v<<' '<<u<<'\n';
		dfs2(v,u);
		dp2[u]^=1;
		if(dp2[v]) 
		{
			ans2[v]=cur;
			cur*=-1;
		}
	}
}

int dfs3(int u, int p)
{
	ll as=ans[u];
	for(int i=0;i<adj2[u].size();i++)
	{
		int v=adj2[u][i];
		if(v==p) continue;
		//cerr<<v<<' '<<u<<'\n';
		as+=dfs3(v,u);
	}
	if(abs(as)!=1) return 238123131;
	else return as;
}
int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	int n; cin>>n;
	int r1=0; int r2=0;
	for(int i=0;i<n;i++)
	{
		int u; cin>>u;
		if(u==-1) 
		{
			r1=i;
		}
		else
		{
			u--;
			adj[u].pb(i);
		}
	}
	for(int i=0;i<n;i++)
	{
		int u; cin>>u;
		if(u==-1) 
		{
			r2=i;
		}
		else
		{
			u--;
			adj2[u].pb(i);
		}
	}
	dfs(r1,-1);
	dfs2(r2,-1);
	for(int i=0;i<n;i++)
	{
		if(dp[i]!=dp2[i])
		{
			cerr<<i<<' '<<dp[i]<<' '<<dp2[i]<<'\n';
			cout<<"IMPOSSIBLE\n";
			return 0;
		}
	}
	cout<<"POSSIBLE\n";
	ans[r1]=dp[r1];
	ans[r2]=dp[r2];
	if(pos)
	{
		for(int i=0;i<n;i++)
		{
			cout<<ans[i];
			if(i+1<n) cout<<' ';
		}
	}
	else
	{
		for(int i=0;i<n;i++)
		{
			cout<<ans2[i];
			if(i+1<n) cout<<' ';
		}
	}
	cout<<'\n';
}


Compiler output:
a.cc: In function 'int main()':
a.cc:125:12: error: 'pos' was not declared in this scope; did you mean 'pow'?
  125 |         if(pos)
      |            ^~~
      |            pow
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
int a,b;
cin>>a>>b;
if((a+b)%3==0||a%3==0||b%3==0)
cout<<"Possible";
else
cout<<"Impossible"
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:19: error: expected ';' before '}' token
   10 | cout<<"Impossible"
      |                   ^
      |                   ;
   11 | }
      | ~
Language: C++

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

#define rep(i, n) rep2(i, 0, n)
#define rep2(i, m, n) for (ll i = m; i < (n); i++)

using ll = long long;
using pii = pair<int, int>;
using Vi = vector<int>;

int main() {
  int a,b;
  cin >>a>>b;
  if(min(a,b)*3=<a+b){
    cout << "Possible" << endl;  
  }
  else{
    cout << "Impossible" << endl;  
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:17: error: expected primary-expression before '<' token
   14 |   if(min(a,b)*3=<a+b){
      |                 ^
Language: C++


#include <cstdio>
#include <iostream>
using namespace std;


int main()
{
    int a,b;
    cin >> a >> b;
    
    if(a%3==0)
    {
        cout << "Possible";
    }
    if(b%3==0)
    {
        cout << "Possible";
    }
    if((a+b)%3==0)
    {
        cout << "Possible";
    }
    elseå
    {
        cout << "Impossible";
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:5: error: 'else\U000000e5' was not declared in this scope
   24 |     elseå
      |     ^~~~~
Language: C++

#include <bits/stdc++.h>
#define arep(a,i,n) for(ll i=(a);i<(n);i++)
#define rep(i,n) for(ll i=0;i<(n);i++)
#define cinf(x,n) for(ll i=0;i<(n);i++)cin>>x[i];
#define coutf(x,n) for(ll i=0;i<(n);i++)cout<<x[i]<<endl;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

using namespace std;

int main(){
	int a,b;
	cin >> a >> b;
	if(a%3!=0&&b%3!=0(a+b)%3!=0)
		cout << "Impossible" << endl;
	else
		cout << "Possible" << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:26: error: expression cannot be used as a function
   15 |         if(a%3!=0&&b%3!=0(a+b)%3!=0)
      |                         ~^~~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int a,b;
  cin>>a>>b;
  
  if(a%s==0||b%3==0||(a+b)%3==0)
    cout<<"Possible";
  else 
    cout<<"Impossible";
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:8: error: 's' was not declared in this scope
    7 |   if(a%s==0||b%3==0||(a+b)%3==0)
      |        ^
Language: C++

#include<bits/stdc++.h>
#include<iostream>
using namespace std;
int main()

{
  int x,y;
  cin>>x>>y
  if(x>y || y>x)
    cout<<"Possible"<<endl;
  else
    cout<<"Impossible"<<endl;


 return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:12: error: expected ';' before 'if'
    8 |   cin>>x>>y
      |            ^
      |            ;
    9 |   if(x>y || y>x)
      |   ~~        
a.cc:11:3: error: 'else' without a previous 'if'
   11 |   else
      |   ^~~~
Language: C++

#include<iostream>
#include<stdlib.h>
#include<math.h>
#include<algorithm>
#include<string.h>
using namespace std;

int main() {
	std::ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	cout.tie(0);

	int n, m; cin >> n >> m;
	int sum = (m + n);
	if ()cout << "Possible" << endl;
	else cout << "Impossible" << endl;

	return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:15:13: error: expected primary-expression before ')' token
   15 |         if ()cout << "Possible" << endl;
      |             ^
Language: C++

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

int main() {
  int a,b;
  cin >> a >> b ;
  count << ( a%3==0 || b%3==0 || (a+b)%3==0 ?
            "Possible" : "Impossible")
    << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:9: error: invalid operands of types '<unresolved overloaded function type>' and 'const char*' to binary 'operator<<'
    7 |   count << ( a%3==0 || b%3==0 || (a+b)%3==0 ?
      |   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    8 |             "Possible" : "Impossible")
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: C++

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

int main() {
  int a,b;
  cin >> a >> b ;
  count << ( a%3==0 || b%3==0 || (a+b)%3==0 ?
            'Possible' : 'Impossible')
    << endl;
}

Compiler output:
a.cc:8:13: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
    8 |             'Possible' : 'Impossible')
      |             ^~~~~~~~~~
a.cc:8:26: warning: multi-character literal with 10 characters exceeds 'int' size of 4 bytes
    8 |             'Possible' : 'Impossible')
      |                          ^~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:7:9: error: invalid operands of types '<unresolved overloaded function type>' and 'int' to binary 'operator<<'
    7 |   count << ( a%3==0 || b%3==0 || (a+b)%3==0 ?
      |   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    8 |             'Possible' : 'Impossible')
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~
Language: Java

public class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int a=scan.nextInt();
		int b=scan.nextInt();
		if((a+b)%3==0) System.out.println("Possible");
		else System.out.println("Impossible");
	}

}


Compiler output:
Main.java:4: error: cannot find symbol
		Scanner scan = new Scanner(System.in);
		^
  symbol:   class Scanner
  location: class Main
Main.java:4: error: cannot find symbol
		Scanner scan = new Scanner(System.in);
		                   ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++


//#include <tourist>
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> p;
const int INF = 1e9;
const ll LINF = ll(1e18);
const int MOD = 1000000007;
const int dx[4] = {0, 1, 0, -1}, dy[4] = {-1, 0, 1, 0};
const int Dx[8] = {0, 1, 1, 1, 0, -1, -1, -1}, Dy[8] = {-1, -1, 0, 1, 1, 1, 0, -1};
#define yes cout << "Yes" << endl
#define YES cout << "YES" << endl
#define no cout << "No" << endl
#define NO cout << "NO" << endl
#define rep(i, n) for (int i = 0; i < n; i++)
#define ALL(v) v.begin(), v.end()
#define debug(v)          \
    cout << #v << ":";    \
    for (auto x : v)      \
    {                     \
        cout << x << ' '; \
    }                     \
    cout << endl;
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;
}
//cout<<fixed<<setprecision(15);有効数字15桁
//-std=c++14
//-std=gnu++17
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; }
int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n, a, b;
    cin >> a >> b;
    if (a % 3 && b % 3 && (a + b) % 3)
        cout << "Impossible
                "<<"\n";
            else cout
             << "Possible
                "<<"\n";
}


Compiler output:
a.cc:57:17: warning: missing terminating " character
   57 |         cout << "Impossible
      |                 ^
a.cc:57:17: error: missing terminating " character
   57 |         cout << "Impossible
      |                 ^~~~~~~~~~~
a.cc:58:21: error: stray '\' in program
   58 |                 "<<"\n";
      |                     ^
a.cc:58:23: warning: missing terminating " character
   58 |                 "<<"\n";
      |                       ^
a.cc:58:23: error: missing terminating " character
   58 |                 "<<"\n";
      |                       ^~
a.cc:60:17: warning: missing terminating " character
   60 |              << "Possible
      |                 ^
a.cc:60:17: error: missing terminating " character
   60 |              << "Possible
      |                 ^~~~~~~~~
a.cc:61:21: error: stray '\' in program
   61 |                 "<<"\n";
      |                     ^
a.cc:61:23: warning: missing terminating " character
   61 |                 "<<"\n";
      |                       ^
a.cc:61:23: error: missing terminating " character
   61 |                 "<<"\n";
      |                       ^~
a.cc: In function 'int main()':
a.cc:58:21: error: expected ';' before 'n'
   58 |                 "<<"\n";
      |                     ^~
      |                     ;
Language: C++


//#include <tourist>
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> p;
const int INF = 1e9;
const ll LINF = ll(1e18);
const int MOD = 1000000007;
const int dx[4] = {0, 1, 0, -1}, dy[4] = {-1, 0, 1, 0};
const int Dx[8] = {0, 1, 1, 1, 0, -1, -1, -1}, Dy[8] = {-1, -1, 0, 1, 1, 1, 0, -1};
#define yes cout << "Yes" << endl
#define YES cout << "YES" << endl
#define no cout << "No" << endl
#define NO cout << "NO" << endl
#define rep(i, n) for (int i = 0; i < n; i++)
#define ALL(v) v.begin(), v.end()
#define debug(v)          \
    cout << #v << ":";    \
    for (auto x : v)      \
    {                     \
        cout << x << ' '; \
    }                     \
    cout << endl;
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;
}
//cout<<fixed<<setprecision(15);有効数字15桁
//-std=c++14
//-std=gnu++17
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; }
int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n, a, b;
    cin >> a >> b;
    if (a % 3 && b % 3 && (a + b) % 3)
        cout << "Impossible
                "<<"\n ";
            else cout
             << "Possible
                "<<"\n ";
}


Compiler output:
a.cc:57:17: warning: missing terminating " character
   57 |         cout << "Impossible
      |                 ^
a.cc:57:17: error: missing terminating " character
   57 |         cout << "Impossible
      |                 ^~~~~~~~~~~
a.cc:58:21: error: stray '\' in program
   58 |                 "<<"\n ";
      |                     ^
a.cc:58:24: warning: missing terminating " character
   58 |                 "<<"\n ";
      |                        ^
a.cc:58:24: error: missing terminating " character
   58 |                 "<<"\n ";
      |                        ^~
a.cc:60:17: warning: missing terminating " character
   60 |              << "Possible
      |                 ^
a.cc:60:17: error: missing terminating " character
   60 |              << "Possible
      |                 ^~~~~~~~~
a.cc:61:21: error: stray '\' in program
   61 |                 "<<"\n ";
      |                     ^
a.cc:61:24: warning: missing terminating " character
   61 |                 "<<"\n ";
      |                        ^
a.cc:61:24: error: missing terminating " character
   61 |                 "<<"\n ";
      |                        ^~
a.cc: In function 'int main()':
a.cc:58:21: error: expected ';' before 'n'
   58 |                 "<<"\n ";
      |                     ^~
      |                     ;
Language: C++


//#include <tourist>
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> p;
const int INF = 1e9;
const ll LINF = ll(1e18);
const int MOD = 1000000007;
const int dx[4] = {0, 1, 0, -1}, dy[4] = {-1, 0, 1, 0};
const int Dx[8] = {0, 1, 1, 1, 0, -1, -1, -1}, Dy[8] = {-1, -1, 0, 1, 1, 1, 0, -1};
#define yes cout << "Yes" << endl
#define YES cout << "YES" << endl
#define no cout << "No" << endl
#define NO cout << "NO" << endl
#define rep(i, n) for (int i = 0; i < n; i++)
#define ALL(v) v.begin(), v.end()
#define debug(v)          \
    cout << #v << ":";    \
    for (auto x : v)      \
    {                     \
        cout << x << ' '; \
    }                     \
    cout << endl;
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;
}
//cout<<fixed<<setprecision(15);有効数字15桁
//-std=c++14
//-std=gnu++17
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; }
int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n, a, b;
    cin >> a >> b;
    if (a % 3 && b % 3 && (a + b) % 3)
        cout << "Impossible
                "<<"\n "
            else cout
             << "Possible
                "<<"\n ";
}


Compiler output:
a.cc:57:17: warning: missing terminating " character
   57 |         cout << "Impossible
      |                 ^
a.cc:57:17: error: missing terminating " character
   57 |         cout << "Impossible
      |                 ^~~~~~~~~~~
a.cc:58:21: error: stray '\' in program
   58 |                 "<<"\n "
      |                     ^
a.cc:58:24: warning: missing terminating " character
   58 |                 "<<"\n "
      |                        ^
a.cc:58:24: error: missing terminating " character
a.cc:60:17: warning: missing terminating " character
   60 |              << "Possible
      |                 ^
a.cc:60:17: error: missing terminating " character
   60 |              << "Possible
      |                 ^~~~~~~~~
a.cc:61:21: error: stray '\' in program
   61 |                 "<<"\n ";
      |                     ^
a.cc:61:24: warning: missing terminating " character
   61 |                 "<<"\n ";
      |                        ^
a.cc:61:24: error: missing terminating " character
   61 |                 "<<"\n ";
      |                        ^~
a.cc: In function 'int main()':
a.cc:58:21: error: expected ';' before 'n'
   58 |                 "<<"\n "
      |                     ^~
      |                     ;
Language: C

#include<stdio.h>

int main(void)
{
     int a,b;
     scanf("%d%d",&a,&b);
     if((a+b)%3=0 || a%3=0 || b%3=0)printf("Possible¥n");
     else printf("Impossible¥n");
     return 0;
     }

Compiler output:
main.c: In function 'main':
main.c:7:34: error: lvalue required as left operand of assignment
    7 |      if((a+b)%3=0 || a%3=0 || b%3=0)printf("Possible¥n");
      |                                  ^
Language: C++

A,B=map(int,input().split(' '))
if (A+B)%3 and A%3 and B%3:
  print('Impossible')
else:
  print('Possible')

Compiler output:
a.cc:3:9: warning: multi-character literal with 10 characters exceeds 'int' size of 4 bytes
    3 |   print('Impossible')
      |         ^~~~~~~~~~~~
a.cc:5:9: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
    5 |   print('Possible')
      |         ^~~~~~~~~~
a.cc:1:1: error: 'A' does not name a type
    1 | A,B=map(int,input().split(' '))
      | ^
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<set>
#include<iomanip>
#define rep(i, a, n) for(int i = a; i < n; i++)
using namespace std;
int main(){
int a, b;
cin >> a >> b;
if(a % 3 == 0){
  cout << "Possible";
}
  esel if(b % 3 == 0){
  cout << "Possible";
}
esel if((a + b) % 3 == 0){
  cout << "Possible";
}
esel{
  cout << "Impossible";
}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:15:3: error: 'esel' was not declared in this scope
   15 |   esel if(b % 3 == 0){
      |   ^~~~
a.cc:18:5: error: expected ';' before 'if'
   18 | esel if((a + b) % 3 == 0){
      |     ^~~
      |     ;
a.cc:21:5: error: expected ';' before '{' token
   21 | esel{
      |     ^
      |     ;
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define rep(i, n) FOR(i, 0, n)
#define rrep(i, n) for (int i = ((int)(n)-1); i >= 0; --i)
#define whole(x) (x).begin(),(x).end()
#define UNIQUE(v) v.erase(unique(v.begin(), v.end()), v.end())
using P = pair<int, int>;
#define debug(var) cerr << "[" << #var << "] " << var << endl
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
const ll mod = 1000000007;
const int dx[] = {-1,0,1,0};
const int dy[] = {0,-1,0,1};


int main(){
    int a, b;
    cin >> a >> b;
    vecotr<int> v = {a, b, a+b};
    string ans = "Impossible";
    rep(i, 3) if (v[i]%3==0) ans = "Possible";
    
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:21:5: error: 'vecotr' was not declared in this scope
   21 |     vecotr<int> v = {a, b, a+b};
      |     ^~~~~~
a.cc:21:12: error: expected primary-expression before 'int'
   21 |     vecotr<int> v = {a, b, a+b};
      |            ^~~
a.cc:23:19: error: 'v' was not declared in this scope
   23 |     rep(i, 3) if (v[i]%3==0) ans = "Possible";
      |                   ^
Language: C++

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

int main(){
  int A,B;
  cin >> A >> B;
  int C = A + B;
  if(A % 3 = 0; || B % 3 = 0 || C % 3 = 0){
    cout << "Possible" << endl;
  }
else{
  cout << "Impossible" << endl;
}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:8: error: lvalue required as left operand of assignment
    8 |   if(A % 3 = 0; || B % 3 = 0 || C % 3 = 0){
      |      ~~^~~
a.cc:8:17: error: expected primary-expression before '||' token
    8 |   if(A % 3 = 0; || B % 3 = 0 || C % 3 = 0){
      |                 ^~
a.cc:8:30: error: lvalue required as left operand of assignment
    8 |   if(A % 3 = 0; || B % 3 = 0 || C % 3 = 0){
      |                            ~~^~~~~~~~
Language: C++

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

int main(){
  int A,B;
  cin >> A >> B;
  int C = A + B;
  if(A % 3 == 0; || B % 3 == 0 || C % 3 == 0){
    cout << "Possible" << endl;
  }
else{
  cout << "Impossible" << endl;
}
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:18: error: expected primary-expression before '||' token
    8 |   if(A % 3 == 0; || B % 3 == 0 || C % 3 == 0){
      |                  ^~
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using vi = vector<int>;
using vvi = vector<vector<int>>;
using vl = vector<ll>;
using vvl = vector<vector<ll>>;
#define MOD 1000000007ULL;
#define rep(i,n) for(int i=0;i<n;i++)

int main() {
	int a,b;
  	cin>>a>>b;
  	if(A%3==0||B%3==0||(A+B)%3==0) cout<<"Possible"<<endl;
  	else cout<<"Impossible"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:12: error: 'A' was not declared in this scope
   14 |         if(A%3==0||B%3==0||(A+B)%3==0) cout<<"Possible"<<endl;
      |            ^
a.cc:14:20: error: 'B' was not declared in this scope
   14 |         if(A%3==0||B%3==0||(A+B)%3==0) cout<<"Possible"<<endl;
      |                    ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define int long long
int findLowerBound(
    vector<pair<int, int>> &arr,
    pair<int, int> &p)
{

    auto low = lower_bound(arr.begin(),
                           arr.end(), p);

    return low - arr.begin();
}
int findUpperBound(
    vector<pair<int, int>> &arr,
    pair<int, int> &p)
{
    auto up = upper_bound(arr.begin(),
                          arr.end(), p);

    return up - arr.begin();
}

int32_t main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    string str;
    int n, m;
    cin >> n >> m;
    if ((n + m) % 3 == 0)
    {
        cout << "Possible"
             << "\n";
    }
    else
    {
        /* code */
        cout << "Impossible"
             << "\n"
    }

    cin >> str;

    return 0;
}


Compiler output:
a.cc: In function 'int32_t main()':
a.cc:41:21: error: expected ';' before '}' token
   41 |              << "\n"
      |                     ^
      |                     ;
   42 |     }
      |     ~
Language: Java

import java.util*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int a = sc.nextInt();
    int b = sc.nextInt();
    System.out.println(a+b >= 3 ? "Possible" : "Impossible");
  }
}

Compiler output:
Main.java:1: error: ';' expected
import java.util*;
                ^
1 error
Language: C

#include<stdio.h>

int mian()
{
 int a,b;

 scanf("%d %d",&a,&b);

 if((a%3==0)||(b%3==0)||((a+b)%3==0))printf("Possible");
 else printf("Impossible");

 return 0;
}


Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status