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

#include <bits\stdc++.h>
#define area(x,y) 2*Sin[x]*Sin[y]*Sin[n-x-y]
#define db long double
#define m (l+r>>1)
#define pi (db) 3.14159265358979323846
#define N 300000
using namespace std;
int L[N],R[N],tmp[N],n;
long long k;
db Sin[N],ans;
int main() {
	cin>>n>>k;
	if (n%3==0&&k>1LL*n*(n-1)*(n-2)/6-n/3) {printf("1.29903810568\n");return 0;}
	for (int i=1;i<=n;i++) Sin[i]=sin(i*pi/n);
	for (int i=1;i<=n/3;i++) L[i]=i,R[i]=(n-i)/2;
	db ls=0,rs=1.39903810568;
	while (true) {
		db s=(ls+rs)/2;
		int p=0,q=0;ans=0;
		for (int i=1;i<=n/3;i++) {
			int l=L[i],r=R[i]+1;
			if (area(i,L[i])>s) break;
			while (r-l>1) if (area(i,m)<s) l=m;else r=m;
			tmp[i]=m;
			if (ans<area(i,m)-1e-7) q=0,ans=area(i,m);
			if (abs(ans-area(i,m)<1e-7)) {q+=n;if (m!=L[i]&&m*2!=n-i) q+=n;};
			p+=n*(m-i+1)*2-n;
			if ((n-i)%2==0&&m==R[i]) p-=n;
		}
		if (p<k) for (int i=1;i<=n;i++) L[i]=max(L[i],tmp[i]),ls=s;
		if (k<=p-q) for (int i=1;i<=n;i++) R[i]=min(R[i],tmp[i]+1),rs=s;
		if (k<=p&&p-q<k) break;
	}
	cout<<setprecision(20);
	cout<<ans;
}

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

#define len(x)  (int((x).size()))
#define append push_back
#define pp make_pair
#define ff(a, b)    for (int a = 0; a < int(b); ++a)
#define kk(n)    ff(k, n)
#define xx(n)    ff(x, n)
#define yy(n)    ff(y, n)
#define ii(n)    ff(i, n)
#define fff(a, b, c) for (int a = int(b); a < int(c); ++a)
#define kkk(a, b) fff(k, a, b)
#define xxx(a, b) fff(x, a, b)
#define yyy(a, b) fff(y, a, b)
#define iii(a, b) fff(i, a, b)
#define bb begin()
#define ee end()
#define uu first
#define vv second
#define all(x)  (x).bb, (x).ee
#define ite(v)   decltype((v).bb)
#define fe(i, v) for(ite(v) i = (v).bb; i != (v).ee; ++i)
#define err(...)    { fprintf(stderr, __VA_ARGS__); fflush(stderr); }
#define zz(array, byte)   memset(array, byte, sizeof(array));

using LL = long long;
using DD = long double;
using pii = pair<int, int>;



const LL  INFLL  = 0x7f7f7f7f7f7f7f7fLL;
const int INFint = 0x7f7f7f7f;  //Works with memset(..).
double M_PI = acos(-1);
 
     

LL nbelow(double area, int N) {
    //Longest chord spans i steps along circumference.
    LL rr = 0;
    iii (1, N / 2 + 1) {
        int start = i;
        int finish = (N - i) / 2;
        if (start > finish)
            continue;
        double base = 2*sin((M_PI*i)/N);
        double height = 2*area/base;
        double x = height - cos((M_PI*i)/N);
        if (x < 1) {
            double angle = acos(x);
            double arc = M_PI - (M_PI*i)/N - angle;
            finish = min(finish, int(arc * N / (2*M_PI)));
        }
        if (finish < start)
            continue;
        //Don't count finish, count start only once.
        if (finish > start) {
            LL total = 2*(finish - start - 1) + 1;
            rr += total * LL(N);
        }
        if (finish == (N - i - finish)) {
            if (finish == i) {
                rr += N / 3;
            } else {
                rr += N;
            }
        } else {
            if (finish == start)
                rr += N;
            else
                rr += 2*N;
        } 
    }

    //printf("For %g we have %d\n", area, int(rr));
    return rr;
}



int main() {
    //ios_base::sync_with_stdio(false);     cin.tie(NULL);
    //cout << '\n';
    cout.precision(16);
    

    LL N, K;
    cin >> N >> K;

    double low = 0;
    double high = 10;
    while (high - low > 1e-12) {
        double mid = 0.5*(low + high);
        if (nbelow(mid, int(N)) >= K)
            high = mid;
        else
            low = mid;
    }

    cout << high << '\n';
    

    return 0;
}



Compiler output:
In file included from /usr/include/c++/14/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:114,
                 from a.cc:1:
a.cc:35:8: error: expected unqualified-id before numeric constant
   35 | double M_PI = acos(-1);
      |        ^~~~
Language: C++

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

#define len(x)  (int((x).size()))
#define append push_back
#define pp make_pair
#define ff(a, b)    for (int a = 0; a < int(b); ++a)
#define kk(n)    ff(k, n)
#define xx(n)    ff(x, n)
#define yy(n)    ff(y, n)
#define ii(n)    ff(i, n)
#define fff(a, b, c) for (int a = int(b); a < int(c); ++a)
#define kkk(a, b) fff(k, a, b)
#define xxx(a, b) fff(x, a, b)
#define yyy(a, b) fff(y, a, b)
#define iii(a, b) fff(i, a, b)
#define bb begin()
#define ee end()
#define uu first
#define vv second
#define all(x)  (x).bb, (x).ee
#define ite(v)   decltype((v).bb)
#define fe(i, v) for(ite(v) i = (v).bb; i != (v).ee; ++i)
#define err(...)    { fprintf(stderr, __VA_ARGS__); fflush(stderr); }
#define zz(array, byte)   memset(array, byte, sizeof(array));

using LL = long long;
using DD = long double;
using pii = pair<int, int>;



const LL  INFLL  = 0x7f7f7f7f7f7f7f7fLL;
const int INFint = 0x7f7f7f7f;  //Works with memset(..).
const double M_PI = acos(-1);
 
     

LL nbelow(double area, int N) {
    //Longest chord spans i steps along circumference.
    LL rr = 0;
    iii (1, N / 2 + 1) {
        int start = i;
        int finish = (N - i) / 2;
        double base = 2*sin((M_PI*i)/N);
        double height = 2*area/base;
        double x = height - cos((M_PI*i)/N);
        if (x < 1) {
            double angle = acos(x);
            double arc = M_PI - (M_PI*i)/N - angle;
            finish = min(finish, int(arc * N / (2*M_PI)));
        }
        if (finish < start)
            continue;
        //Don't count finish, count start only once.
        if (finish > start) {
            LL total = 2*(finish - start - 1) + 1;
            rr += total * LL(N);
        }
        if (finish == (N - i - finish)) {
            if (finish == i) {
                rr += N / 3;
            } else {
                rr += N;
            }
        } else
            rr += 2*N;
    }

    return rr;
}



int main() {
    //ios_base::sync_with_stdio(false);     cin.tie(NULL);
    //cout << '\n';
    cout.precision(16);
    

    LL N, K;
    cin >> N >> K;

    double low = 0;
    double high = 10;
    while (high - low > 1e-12) {
        double mid = 0.5*(low + high);
        if (nbelow(mid, int(N)) >= K)
            high = mid;
        else
            low = mid;
    }

    cout << high << '\n';
    

    return 0;
}



Compiler output:
In file included from /usr/include/c++/14/cmath:47,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:114,
                 from a.cc:1:
a.cc:35:14: error: expected unqualified-id before numeric constant
   35 | const double M_PI = acos(-1);
      |              ^~~~
Language: C++

#include <iostream>
#include <cstdio>
#include <cmath>
#include <complex>
#include <vector>
#include <algorithm>
using namespace std;

typedef complex<double> Point;

int n, k;

Point to_point(int i) {
	double pai = 3.14159265358979;
	return exp(complex<double>(0, 2 * pai * i / n));
}

Point to_vector(int i, int j) {
	return to_point(j) - to_point(i);
}

double cross(Point &u, Point &v) {
	return imag(conj(u) * v);
}

//i < j < k
double area(int i, int j, int k) {	//面積を返す
	double ret = cross(to_vector(i, j), to_vector(i, k));
	return ret / 2;
}

signed main() {
	int i, j, l;
	
	scanf("%d%d", &n, &k);
	if (n > 100) return 0;
	k = k - 1;
	
	static vector<double> vec;
	
	for (i = 0; i < n; i++) {
		for (j = i + 1; j < n; j++) {
			for (l = j + 1; l < n; l++) {
				vec.push_back(area(i, j, l));
			}
		}
	}
	sort(vec.begin(), vec.end());
	
	printf("%.14f\n", vec[k]);
	return 0;
}

Compiler output:
a.cc: In function 'double area(int, int, int)':
a.cc:28:37: error: cannot bind non-const lvalue reference of type 'Point&' {aka 'std::complex<double>&'} to an rvalue of type 'Point' {aka 'std::complex<double>'}
   28 |         double ret = cross(to_vector(i, j), to_vector(i, k));
      |                            ~~~~~~~~~^~~~~~
a.cc:22:21: note:   initializing argument 1 of 'double cross(Point&, Point&)'
   22 | double cross(Point &u, Point &v) {
      |              ~~~~~~~^
Language: C++

#include <iostream>
#include <cstdio>
#include <cmath>
#include <complex>
#include <vector>
#include <algorithm>
using namespace std;

typedef complex<double> Point;

int n, k;

Point to_point(int i) {
	double pai = 3.14159265358979;
	return exp(complex<double>(0, 2 * pai * i / n));
}

Point to_vector(int i, int j) {
	return to_point(j) - to_point(i);
}

double cross(Point &u, Point &v) {
	return imag(conj(u) * v);
}

//i < j < k
double area(int i, int j, int k) {	//面積を返す
	double ret = cross(to_vector(i, j), to_vector(i, k));
	return ret / 2;
}

signed main() {
	int i, j, k;
	
	cin >> n >> k;
	if (n > 100) return 0;
	k = k - 1;
	
	static vector<double> vec;
	
	for (i = 0; i < n; i++) {
		for (j = i + 1; j < n; j++) {
			for (k = j + 1; k < n; k++) {
				vec.push_back(area(i, j, k));
			}
		}
	}
	sort(vec.begin(), vec.end());
	
	printf("%.14f\n", vec[k]);
	return 0;
}

Compiler output:
a.cc: In function 'double area(int, int, int)':
a.cc:28:37: error: cannot bind non-const lvalue reference of type 'Point&' {aka 'std::complex<double>&'} to an rvalue of type 'Point' {aka 'std::complex<double>'}
   28 |         double ret = cross(to_vector(i, j), to_vector(i, k));
      |                            ~~~~~~~~~^~~~~~
a.cc:22:21: note:   initializing argument 1 of 'double cross(Point&, Point&)'
   22 | double cross(Point &u, Point &v) {
      |              ~~~~~~~^
Language: C++

#include<cstdio>
#include<cstring>
typedef long long LL;
const int N=2;
const int M=1e6+50;
const int mod=998244353;
struct mat
{
    LL c[N][N];
    void clear(){memset(c,0,sizeof(c));}
}a,t;
mat operator * (mat a,mat b)
{
    mat c;c.clear();
    for(int k=0;k<N;++k)
    for(int i=0;i<N;++i)
    for(int j=0;j<N;++j)
    if(a.c[i][k]&&b.c[k][j])
    c.c[i][j]=(c.c[i][j]+1ll*a.c[i][k]*b.c[k][j]%mod)%mod;
    return c;
}
int get(long long v)
{
    a.c[0][0]=t.c[0][0]=t.c[0][1]=t.c[1][0]=1;
    while(v)
    {
        if(v&1)a=a*t;
        t=t*t;v>>=1; 
    }
    return a.c[0][1];
}
int n,Ans,x,f[M],inv[M];
LL m;
int main(){
    scanf("%d%lld",&n,&m);
    Ans=get(m+2*(n-1));
    m%=mod;f[1]=g[1]=inv[1]=x=1;
    for(int i=2;i<=n;i++)
    {
        f[i]=(f[i-1]+f[i-2])%mod;
        inv[i]=(mod-1ll*(mod/i)*inv[mod%i]%mod)%mod;
    }
    for(int i=n+1;i<=2*n;i++)
    f[i]=(f[i-1]+f[i-2])%mod; 
    for(int i=1;i<n;i++)
    {
        Ans=(Ans-1ll*x*f[2*n-i*2]%mod+mod)%mod;
        x=1ll*x*m%mod*inv[i]%mod;
        m++;
    }
    printf("%d\n",Ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:37:17: error: 'g' was not declared in this scope
   37 |     m%=mod;f[1]=g[1]=inv[1]=x=1;
      |                 ^
Language: C++

#include<cstdio>
#include<cstring>
typedef long long LL;
const int N=2;
const int M=1e6+50;
const int mod=998244353;
struct mat{
    LL c[N][N];
    void clear(){memset(c,0,sizeof(c));}
}a,t;
mat operator * (mat a,mat b){
    mat c;c.clear();
    for(int k=0;k<N;++k)
    for(int i=0;i<N;++i)
    for(int j=0;j<N;++j)
    if(a.c[i][k]&&b.c[k][j])
    c.c[i][j]=(c.c[i][j]+1ll*a.c[i][k]*b.c[k][j]%mod)%mod;
    return c;
}
int get(long long v){
	a.c[0][0]=t.c[0][0]=t.c[0][1]=t.c[1][0]=1;
    while(v){
        if(v&1)a=a*t;
        t=t*t;v>>=1; 
    }
    return a.c[0][1];
}
int n,Ans,x,f[M],inv[M];
LL m;
int main(){
    scanf("%d%lld",&n,&m);
    Ans=get(m+2*(n-1));
	m%=mod;f[1]=g[1]=inv[1]=x=1;
	for(int i=2;i<=n;i++){
    	f[i]=(f[i-1]+f[i-2])%mod;
		inv[i]=(mod-1ll*(mod/i)*inv[mod%i]%mod)%mod;
	}
	for(int i=n+1;i<=2*n;i++)
	f[i]=(f[i-1]+f[i-2])%mod;
	for(int i=1;i<n;i++){
		Ans=(Ans-1ll*x*f[2*n-i*2]%mod+mod)%mod;
		x=1ll*x*m%mod*inv[i]%mod;
		m++;
	}
	printf("%d\n",Ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:21: error: 'g' was not declared in this scope
   33 |         m%=mod;f[1]=g[1]=inv[1]=x=1;
      |                     ^
Language: C++

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

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

ll N,M;
ll mo=998244353; //2^23*7*17+1
ll D[202020];

ll modpow(ll a, ll n) {
	ll r=1;
	while(n) r=r*((n%2)?a:1)%mo,a=a*a%mo,n>>=1;
	return r;
}

ll comb(int P_,int Q_) {
	if(P_<0 || Q_<0 || Q_>P_) return 0;
	ll ret=1;
	Q_=min(Q_,P_-Q_);
	for(int i=1;i<=Q_;i++) ret=ret*(P_+1-i)%mo*modpow(i,mo-2)%mo;
	return ret;
}

ll fib(ll k,ll a1=1,ll a2=1) {
	ll R[2][2]={{1,0},{0,1}};
	ll A[2][2]={{1,1},{1,0}};
	k--;
	
	while(k) {
		ll S[2][2], T[2][2];
		if(k%2) {
			S[0][0]=(A[0][0]*R[0][0]+A[0][1]*R[1][0])%mo;
			S[0][1]=(A[0][0]*R[0][1]+A[0][1]*R[1][1])%mo;
			S[1][0]=(A[1][0]*R[0][0]+A[1][1]*R[1][0])%mo;
			S[1][1]=(A[1][0]*R[0][1]+A[1][1]*R[1][1])%mo;
			swap(S,R);
		}
		ll T[2][2];
		T[0][0]=(A[0][0]*A[0][0]+A[0][1]*A[1][0])%mo;
		T[0][1]=(A[0][0]*A[0][1]+A[0][1]*A[1][1])%mo;
		T[1][0]=(A[1][0]*A[0][0]+A[1][1]*A[1][0])%mo;
		T[1][1]=(A[1][0]*A[0][1]+A[1][1]*A[1][1])%mo;
		swap(T,A);
		k>>=1;
	}
	return (R[1][0]+R[1][1])%mo;
}

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>M;
	
	M+=2*(N-1);
	ll F=fib(M);
	if(N>3000) return;
	for(i=1;i<N;i++) {
		M=(M+mo-2)%mo;
		F=(F+mo-comb(M+i,i-1))%mo;
	}
	cout<<F<<endl;
	
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n';
	FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	solve(); return 0;
}


Compiler output:
a.cc: In function 'll fib(ll, ll, ll)':
a.cc:47:20: error: redeclaration of 'll T [2][2]'
   47 |                 ll T[2][2];
      |                    ^
a.cc:39:29: note: 'll T [2][2]' previously declared here
   39 |                 ll S[2][2], T[2][2];
      |                             ^
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<ll,ll> ii;
typedef vector<int> vi;
typedef long double ld; 
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> pbds;
typedef set<int>::iterator sit;
typedef map<int,int>::iterator mit;
typedef vector<int>::iterator vit;

const ll MOD = 998244353;

ll dp[3001][3001];
const int DIM = 7;

struct Matrix {
  ll a[DIM][DIM];
  int *operator [] (int r) { return a[r]; };

  Matrix(int x = 0) {
    memset(a, 0, sizeof a);
    if (x)
    {
		for(int i = 0; i < DIM; i++) a[i][i] = x;
	}
  }
} const I(1);

Matrix operator * (Matrix A, Matrix B) {
  const ll mod2 = ll(MOD) * MOD;
  Matrix C;
 for(int i = 0; i < DIM; i++)
 {
	 for(int j = 0; j < DIM; j++)
	 {
		ll w = 0;
		for(int k = 0; k < DIM; k++)
		{
			w += (ll(A[i][k]) * B[k][j])%MOD;
			w%=MOD;
		}
    C[i][j] = w % MOD;
	}
  }
  return C;
}

Matrix ori(0);
Matrix ans(0);

void out(Matrix A)
{
	for(int i = 0; i < 6; i++)
	{
		for(int j = 0; j < 6; j++)
		{
			cerr<<A.a[i][j]<<' ';
		}
		cerr<<'\n';
	}
	cerr<<'\n';
}

void solve(ll b)
{
	vector<int> digits;
	while(b)
	{
		digits.pb(b%2);
		b>>=1;
	}
	digits.pop_back();	
	reverse(digits.begin(),digits.end());
	ans = ori;
	//out(ans);
	for(int i = 0; i < digits.size(); i++)
	{
		ans = (ans*ans);
		if(digits[i]==1)
		{
			ans=(ans*ori);
		}
		//out(ans);
	}
}

int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);
	ll n, m;
	cin>>n>>m;
	if(m==1)
	{
		cout<<1<<'\n';
		return 0;
	}
	if(n>3)
	{
		dp[1][1] = 1; dp[1][2] = 1;
		for(int i = 3; i <= m; i++)
		{
			dp[1][i]=(dp[1][i-1]+dp[1][i-2])%MOD;
		}
		for(int i = 2; i <= n; i++)
		{
			for(int j = 1; j <= m; j++)
			{
				dp[i][j] = (dp[i][j-1]+dp[i-1][j])%MOD;
			}
		}	
		cout<<dp[n][m]<<'\n';
	}
	else
	{
		ori[0][0]=ori[0][1]=ori[1][1]=ori[1][3]=ori[2][1]=ori[3][3]=ori[3][4]=ori[4][3]=ori[5][4]=1;
		ans=ori;
		solve(m);
		//out(ans);
		ll answer = 0;
		if(n==1)
		{
			answer=(ans[5][1]+ans[5][3]+ans[5][4])%MOD;
		}
		if(n==2)
		{
			answer=(ans[2][1]+ans[2][3]+ans[2][4])%MOD;
		}
		if(n==3)
		{
			answer=(ans[0][1]+ans[0][3]+ans[0][4])%MOD;
		}
		cout<<answer<<'\n';
	}
}


Compiler output:
a.cc: In member function 'int* Matrix::operator[](int)':
a.cc:31:40: error: cannot convert 'll*' {aka 'long long int*'} to 'int*' in return
   31 |   int *operator [] (int r) { return a[r]; };
      |                                     ~~~^
      |                                        |
      |                                        ll* {aka long long int*}
Language: C++

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

#define int long long

#define rep(i,n) for(int i=0;i<(n);i++)
#define pb push_back
#define all(v) (v).begin(),(v).end()
#define fi first
#define se second
typedef vector<int>vint;
typedef pair<int,int>pint;
typedef vector<pint>vpint;

template<typename A,typename B>inline void chmin(A &a,B b){if(a>b)a=b;}
template<typename A,typename B>inline void chmax(A &a,B b){if(a<b)a=b;}

#define DBG 0

int N=50;
int K=250;
int A[50][50];

int cnt;

int q(int y1,int x1,int y2,int x2){
    if((y2-y1)*(x2-x1)==0)return 0;

    if(DBG){
        int res=0;
        for(int y=y1;y<y2;y++)for(int x=x1;x<x2;x++)res+=A[y][x];
        return res;
    }

    else{
        cout<<"? "<<y1<<" "<<x1<<" "<<y2-1<<" "<<x2-1<<endl;
        int p;cin>>p;
        return p;
    }
}


vector<int>lis[2555];
int dfs(int y1,int x1,int y2,int x2,int p){
    if(y1==y2)return 0;
    if(x1==x2)return 0;

    if((y2-y1)*(x2-x1)==p){
        for(int y=y1;y<y2;y++)for(int x=x1;x<x2;x++)A[y][x]=1;
        return 0;
    }

    if(p==0)return 0;
    int y3=(y1+y2)/2;
    int x3=(x1+x2)/2;

    int pl=q(y1,x1,y2,x3);
    int pu=q(y1,x1,y3,x2);

    int p11,p12,p21,p22;

    int cnt=2;

    if(pl==0){
        p11=p21=0;
        p12=pu;
        p22=p-pu;
    }
    else if(pl==p){
        p12=p22=0;
        p11=pu;
        p21=p-pu;
    }
    else if(pu==0){
        p11=p12=0;
        p21=pl;
        p22=p-pl;
    }
    else if(pu==p){
        p21=p22=0;
        p11=pl;
        p12=p-pl;
    }
    else{
        p11=q(y1,x1,y3,x3);
        p12=pu-p11;
        p21=pl-p11;
        p22=p-p11-p12-p21;
        cnt++;
    }

    cnt+=dfs(y1,x1,y3,x3,p11);
    cnt+=dfs(y1,x3,y3,x2,p12);
    cnt+=dfs(y3,x1,y2,x3,p21);
    cnt+=dfs(y3,x3,y2,x2,p22);

    lis[(y2-y1)*(x2-x1)].pb(cnt);
    return cnt;
}
const int B=8

signed main(){
    if(DBG){
        vector<pint>v;
        rep(i,N)rep(j,N)v.pb({i,j});
        srand((unsigned)time(NULL));
        random_shuffle(all(v));

        for(int i=0;i<K;i++){
            A[v[i].fi][v[i].se]=1;
        }
        int sum=0;
        for(int i=0;i<N/B;i++){
            for(int j=0;j<N/B;j++){
                int y=(i+1)*B;
                int x=(j+1)*B;
                if(i+1==N/B)y=N;
                if(j+1==N/B)x=N;
                int p=q(i*B,j*B,y,x);
                sum++;
                sum+=dfs(i*B,j*B,y,x,p);
            }
        }
        int cnt=0;
        rep(i,N)rep(j,N)cnt+=A[i][j];
        cout<<cnt<<endl;
        cout<<sum<<endl;

        cout<<dfs(0,0,N,N,K)<<endl;
    }

    else{
        int tmp;
        cin>>tmp;cin>>tmp;cin>>tmp;
        int mod;cin>>mod;

        for(int i=0;i<(N+B-1)/B;i++){
            for(int j=0;j<(N+B-1)/B;j++){
                int p=q(i*B,j*B,min(N,(i+1)*B),min(N,(j+1)*B));
                dfs(i*B,j*B,min(N,(i+1)*B),min(N,(j+1)*B),p);
            }
        }

        int p=1;
        int res=0;
        rep(i,N)rep(j,N){
            res=(res+p*A[i][j])%mod;
            p=p*2%mod;
        }

        cout<<"! "<<res<<endl;
    }
    return 0;
}


Compiler output:
a.cc:102:1: error: expected ',' or ';' before 'signed'
  102 | signed main(){
      | ^~~~~~
Language: C

#include<stdio.h>

int H, W, N, K;
int ans_map[50][50];

void check4s(int h, int w, int num) {
	int p;
	int c = 0;
	
	printf("? %d %d %d %d\n", h, w, h, w);
	fflush(stdout);
	scanf("%d", &p);
	ans_map[h][w] = p;
	c += p;
	if(c == num) return;
	
	printf("? %d %d %d %d\n", h, w+1, h, w+1);
	fflush(stdout);
	scanf("%d", &p);
	ans_map[h][w+1] = p;
	c += p;
	if(c == num) return;
	
	printf("? %d %d %d %d\n", h+1, w, h+1, w);
	fflush(stdout);
	scanf("%d", &p);
	ans_map[h+1][w] = p;
	c += p;
	if(c == num) return;
	
	ans_map[h+1][w+1] = 1;
}

void check4h(int h, int w, int num) {
	int i;
	int p;
	int c = 0;
	
	for(i=0;i<3;i++) {
		printf("? %d %d %d %d\n", h, w+i, h, w+i);
		fflush(stdout);
		scanf("%d", &p);
		ans_map[h][w+i] = p;
		c += p;
		if(c == num) return;
	}
	
	ans_map[h][w+3] = 1;
}

void check4v(int h, int w, int num) {
	int i;
	int p;
	int c = 0;
	
	for(i=0;i<3;i++) {
		printf("? %d %d %d %d\n", h+i, w, h+i, w);
		fflush(stdout);
		scanf("%d", &p);
		ans_map[h+i][w] = p;
		c += p;
		if(c == num) return;
	}
	
	ans_map[h+3][w] = 1;
}

void check25(int h, int w, int num) {
	int i, j;
	int p;
	int c = 0;
	
	for(i=0;i<2;i++) {
		for(j=0;j<2;j++) {
			printf("? %d %d %d %d\n", h+i*2, w+j*2, h+i*2+1, w+j*2+1);
			fflush(stdout);
			scanf("%d", &p);
			if(p > 0) {
				c += p;
				check4s(h+i*2, w+j*2, p);
				if(c == num) return;
			}
		}
	}
	
	printf("? %d %d %d %d\n", h+4, w, h+4, w+3);
	fflush(stdout);
	scanf("%d", &p);
	if(p > 0) {
		c += p;
		check4h(h+4, w, p);
		if(c == num) return;
	}
	
	printf("? %d %d %d %d\n", h, w+4, h+3, w+4);
	fflush(stdout);
	scanf("%d", &p);
	if(p > 0) {
		c += p;
		check4v(h, w+4, p);
		if(c == num) return;
	}
	
	ans_map[h+4][w+4] = 1;
}

int main() {
	int i, j;
	int p;
	int c = 0;
	long ans = 0;
	
	scanf("%d %d %d %d", &H, &W, &N, &K);
	/*
	for(i=0;i<10;i++) {
		for(j=0;j<10;j++) {
			if(c == N) break;
			printf("? %d %d %d %d\n", i*5, j*5, i*5+4, j*5+4);
			fflush(stdout);
			scanf("%d", &p);
			if(p > 0) {
				c += p;
				check25(i*5, j*5, p);
			}
		}
	}*/
	for(i=0;i<H;i++) {
		for(j=0;j<W;j++) {
			printf("? %d %d %d %d\n", i, j, i, j);
			scanf("%d", &p);
			ans_map[i][j] = p;
		}
	}
	
	for(i=0;i<H;i++) {
		for(j=0;j<W;j++) {
			if(ans_map[i][j]) ans += pow;
			pow *= 2;
			ans %= K;
			pow %= K;
		}
	}
	
	printf("! %ld\n", ans);
	
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:137:50: error: 'pow' undeclared (first use in this function)
  137 |                         if(ans_map[i][j]) ans += pow;
      |                                                  ^~~
main.c:137:50: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<vector>
using namespace std;
int main(void){
	int h, w, n, k;
	int ans = 0;
	int a[2501];
	a[0] = 1;
	int x;
	int n=0;
	scanf("%d %d %d %d", &h, &w, &n, &k);
	for (int i = 1; i < 2501; i++){
		a[i] = a[i - 1] * 2;
		a[i] = a[i] % k;
	}

	for (int i = 0; i < 50; i++){
		for (int j = 0; j < 50; j++){
			printf("?%d %d %d %d", i, j, i, j);
			scanf("%d", &x);
			if (x == 1){
				ans = ans + a[(50 * i) + j];
				ans = ans%k;
				n++;
				if (n == 250){
					printf("!%d\n", ans);
					return 0;
				}
			}
		}
	}
	printf("!%d\n", ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:13: error: redeclaration of 'int n'
   12 |         int n=0;
      |             ^
a.cc:7:19: note: 'int n' previously declared here
    7 |         int h, w, n, k;
      |                   ^
Language: C++

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

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    
    short h,w,ans = 0;
    cin >> h >> w;
    char ai;
    rep(i,h) {
        cin >> ai;
        rep(j,w) if (ai[j] == '#') ans ++;
    }
    if (ans == h+w-1) cout << "Possible\n";
    else cout << "Impossible\n";
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:24: error: invalid types 'char[int]' for array subscript
   15 |         rep(j,w) if (ai[j] == '#') ans ++;
      |                        ^
Language: C++

#include <iostream>
#include<vector>
using namespace std;
int main(void){
   int h,w;
   cin >> h >> w;
   vector<string> s(h);
   for(int i = 0;i < n;i++){
         cin >> s[i];
   }
   int stone = 0;
   for(int i = 0;i < h;i++){
         for(int j = 0;j < w;j++){
               if(s[i][j] == '#')stone++;
         }
   }
   cout << ((h + w - 1 == stone) ? "Yes" : "No") << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:22: error: 'n' was not declared in this scope
    8 |    for(int i = 0;i < n;i++){
      |                      ^
Language: C++

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

int h, w;
vector<string> a(8);
int nextX[] = { 0, 1};
int nextY[] = {1, 0};
vector<vector<int>> arrived(8, vector<int>(8, 0));

bool range_check(int y, int x) {
  if (y < 0 || x < 0 || y >= h || x >= w) {
    return false;
  }
  return true;
}

bool dfs(int y, int x) {
  // cout << y << " " << x << endl;
  if (!range_check(y, x)) {
    return false;
  }
  if (arrived[y][x]) {
    return false;
  }
  arrived[y][x] = 1;
  if (y == h - 1 && x == w - 1) {
    return true;
  }
  bool flg = false;
  for (int i = 0; i < 2; i++) {
    int ny = y + nextY[i], nx = x + nextX[i];
    if (range_check(ny, nx)) {
      if (a[ny][nx] == '#') {
        if (arrived[ny][nx] == 0) {
          flg = dfs(ny, nx);
        }
      }
    }
  }
  return flg;
}
int main() {
  cin >> h >> w;
  for (int i = 0; i < h; i++) {
    cin >> a[i];
  }
  if(dfs(0,0)){
    for (int i = 0;i<h;i++){
      for (int j = 0; j < w;j++){
        if(s[i][j]=='#'){
          if(arrived[i][j]==0){
            cout << "Impossible" << endl;
            return 0;
          }
        }
      }
    }
    cout << "Possible" << endl;
  }else{
    cout << "Impossible" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:50:12: error: 's' was not declared in this scope
   50 |         if(s[i][j]=='#'){
      |            ^
Language: C++

#include <bits/stdc++.h>
typedef long long ll;
#define rep(i, n) for (ll i = 0; i < (ll)n; ++i)
const int MOD = 1000000007;
using namespace std;

void solve(void)
{
    int h, w;
    cin >> h >> w;
    vector<string> a(h);
    rep(i, h) cin >> a[i];
    vector<vector<int>> f(h, vector<int>(w, -1));
    int sy = 0, sx = 0;
    f[sy][sx] = 0;
    queue<pair<int, int>> q;
    q.push({sy, sx});
    while (!q.empty())
    {
        auto s = q.front();
        q.pop();
        int y = s.first, x = s.second;
        if (x + 1 >= w)
            continue;
        if (a[y][x + 1] == '#' && f[y][x + 1] == -1)
            f[y][x + 1] = f[y][x] + 1, q.push({y, x + 1});
        if (y + 1 >= h)
            continue;
        if (a[y + 1][x] == '#' && f[y + 1][x] == -1)
            f[y + 1][x] = f[y][x] + 1, q.push({y + 1, x});
    }
    map<int, int> mp;
    rep(i, h) rep(j, w) if (s[i][j] == '.') mp[f[i][j]]++;
    if (f[h - 1][w - 1] == -1)
        cout << "Impossible" << endl;
    else
    {
        bool flag = true;
        for (auto i : mp)
        {
            if (i.first == -1)
                continue;
            if (i.second > 1)
                flag = false;
        }
        if (flag)
            cout << "Possible" << endl;
        else
            cout << "Impossible" << endl;
    }
}
int main(void)
{
    solve();
}

Compiler output:
a.cc: In function 'void solve()':
a.cc:33:29: error: 's' was not declared in this scope
   33 |     rep(i, h) rep(j, w) if (s[i][j] == '.') mp[f[i][j]]++;
      |                             ^
Language: C++

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

int main() {
    ll h,w,tmp;
    cin>>h>>w;
    vector<vector<char>> a(h,vector<char(w));
    bool flag = true;
    for(int i=0; i<h; i++) {
        for(int j=0; j<w; j++) {
            cin>>a[i][j];
        }
    }
    for(int i=0; i<h; i++) {
        for(int j=0; j<w; j++) {
            if(a[i][j] == '#') {
                if(tmp > j) flag = false;
                else tmp = j;
            }
        }
    }
    if(flag) cout<<"Possible"<<endl;
    else cout<<"Impossible"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:43: error: the value of 'w' is not usable in a constant expression
    8 |     vector<vector<char>> a(h,vector<char(w));
      |                                           ^
a.cc:6:10: note: 'll w' is not const
    6 |     ll h,w,tmp;
      |          ^
a.cc:8:43: error: type/value mismatch at argument 1 in template parameter list for 'template<class _Tp, class _Alloc> class std::vector'
    8 |     vector<vector<char>> a(h,vector<char(w));
      |                                           ^
a.cc:8:43: note:   expected a type, got '(char)w'
a.cc:8:43: error: template argument 2 is invalid
Language: C++

#include<iostream>
using namespace std;
int main(){
  int h,w;cin>>h>>w;
  char c[h][w];
  for(int i=0;i<h;i++)cin>>c[i][j];
  cout<<"Possible"<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:33: error: 'j' was not declared in this scope
    6 |   for(int i=0;i<h;i++)cin>>c[i][j];
      |                                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;

int H,W;
char field[9][9];
int dx[2] = {0,1};
int dy[2] = {1,0};

bool DFS(int x,int y) {
  if (x == H - 1 && y == W - 1) {
    return true;
  } else {
    bool res = false;
    for (int i = 0; i < 2; i++) {
      int fx = x + dx[i];
      int fy = y + dy[i];
      if (field[fx][fy] == '#' && fx <= H - 1 && fy <= W - 1) {
        if (DFS(fx,fy)) {
          field[fx][fy] = '.'
          res = true;
        }
      } 
    }
    return res;
  }
}

int main() {
  cin >> H >> W;
  for (int i = 0; i < H; i++) {
    for (int j = 0; j < W; j++) {
      cin >> field[i][j];
    }
  }
  bool ans = true;
  if (!DFS(0,0)) {
    ans = false;
  }
  for (int i = 0; i < H; i++) {
    for (int j = 0; j < W; j++) {
      if (field[i][j] == '#') {
        ans = false;
      }
    }
  }
  if (ans) {
    cout << "Possible" << endl;
  } else {
    cout << "Impossible" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'bool DFS(int, int)':
a.cc:22:30: error: expected ';' before 'res'
   22 |           field[fx][fy] = '.'
      |                              ^
      |                              ;
   23 |           res = true;
      |           ~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;

int H,W;
char field[9][9];
int dx[2] = {0,1};
int dy[2] = {1,0};

bool DFS(int x,int y) {
  if (x == H - 1 && y == W - 1) {
    return true;
  } else {
    bool res = false;
    for (int i = 0; i < 2; i++) {
      int fx = x + dx[i];
      int fy = y + dy[i];
      if (field[fx][fy] == '#' && fx <= H - 1 && fy <= W - 1) {
        if (DFS(fx,fy)) {
          field[fx][fy] = '.'
          res = true;
        }
      } 
    }
    return res;
  }
}

int main() {
  cin >> H >> W;
  for (int i = 0; i < H; i++) {
    for (int j = 0; j < W; j++) {
      cin >> field[i][j];
    }
  }
  bool ans = true;
  if (!DFS(0,0)) {
    ans = false;
  }
  for (int i = 0; i < H; i++) {
    for (int j - 0; j < W; j++) {
      if (field[i][j] == '#') {
        ans = false;
      }
    }
  }
  if (ans) {
    cout << "Possible" << endl;
  } else {
    cout << "Impossible" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'bool DFS(int, int)':
a.cc:22:30: error: expected ';' before 'res'
   22 |           field[fx][fy] = '.'
      |                              ^
      |                              ;
   23 |           res = true;
      |           ~~~                 
a.cc: In function 'int main()':
a.cc:43:15: error: expected ';' before '-' token
   43 |     for (int j - 0; j < W; j++) {
      |               ^~
      |               ;
a.cc:43:26: error: expected ')' before ';' token
   43 |     for (int j - 0; j < W; j++) {
      |         ~                ^
      |                          )
a.cc:43:28: error: 'j' was not declared in this scope
   43 |     for (int j - 0; j < W; j++) {
      |                            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;

int H,W;
char field[9][9];
int dx[2] = {0,1};
int dy[2] = {1,0};

bool DFS(int x,int y) {
  if (x == H - 1 && y == W - 1) {
    return true;
  } else {
    bool res = false;
    for (int i = 0; i < 2; i++) {
      int fx = x + dx[i];
      int fy = y + dy[i];
      if (field[fx][fy] == '.') {
        if (DFS(fx,fy)) {
          res = true;
        }
      } 
    }
    return res;
  }
}

int main() {
  cin >> H >> W;
  for (int i = 0; i < H; i++) {
    for (int j = 0; j < W; j++) {
      cin >> A[i][j];
    }
  }
  if (DFS(0,0)) {
    cout << "Possible" << endl;
  } else {
    cout << "Impossible" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:34:14: error: 'A' was not declared in this scope
   34 |       cin >> A[i][j];
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
typedef pair<int, int> P;
ll Mod = 1000000007;

int H,W;
char field[9][9];
int dx[2] = {0,1};
int dy[2] = {1,0};

bool DFS(int x,int y) {
  if (x == H - 1 && y == W - 1) {
    return true;
  } else {
    bool res = false;
    for (int i = 0; i < 2; i++) {
      int fx = x + dx[i];
      int fy = y + dy[i];
      if (field[fx][fy] == '.') {
        if (DFS(fx,fy)) {
          res = true;
        }
      } 
    }
    return res;
  }
}

int main() {
  cin >> H >> W;
  for (int i = 0; i < H; i++) {
    for (int j - 0; j < W; j++) {
      cin >> A[i][j];
    }
  }
  if (DFS(0,0)) {
    cout << "Possible" << endl;
  } else {
    cout << "Impossible" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:15: error: expected ';' before '-' token
   33 |     for (int j - 0; j < W; j++) {
      |               ^~
      |               ;
a.cc:33:26: error: expected ')' before ';' token
   33 |     for (int j - 0; j < W; j++) {
      |         ~                ^
      |                          )
a.cc:33:28: error: 'j' was not declared in this scope
   33 |     for (int j - 0; j < W; j++) {
      |                            ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
int counter1,counter2;
counter1=0;
counter2=0;
int b;
int c=0;
int k=0;
int H,W; cin>>H>>W;
int counter=W+H+10;
int count=-1;
char a[H][W];
for(int i=0;i<H;i++){
for(int j=0;j<W;j++){
cin>>a[i][j];}}
for(int i=0;i<H;i++){
for(int j=0;j<W;j++){
if(a[i][j]=='#'){
counter1++;
counter2=0;
b=1;
}
else {counter2++;
if(b==0){
c++;}}}
if(W-(counter2+c)==1){
counter=counter2;
count=c;
counter1=0;
counter2=0;
b=0;
c=0;
continue;}
else if(counter=<counter2){
goto aaa;}
else if(count>=c){
goto aaa;}
else{
counter=counter2;
count=c;
counter1=0;
counter2=0;
b=0;
c=0;
}}
if(1>0){
cout<<"Possible"<<endl;}
else{
aaa:
cout<<"Impossible"<<endl;}}


Compiler output:
a.cc: In function 'int main()':
a.cc:35:17: error: expected primary-expression before '<' token
   35 | else if(counter=<counter2){
      |                 ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
int counter1,counter2;
counter1=0;
counter2=0;
int answer=0;
int i=0;
int H,W; cin>>H>>W;
int counter=W+H+10;
int count=-1;
char a[H][W];
for(int i=0;i<W;i++){
for(int j=0;j<H;j++){
cin>>a[i][j];}}
for(int i=0;i<W;i++){
for(int j=0;j<H;j++){
if(a[j]=='#'){
counter1++;
counter2=0;}
else {counter2++;}}
if(counter<counter2){
i++;}
if(count>counter1){
i++;}
counter=counter2;
count=counter1;
counter1=0;
counter2=0;}
if(i>0){
cout<<"Impossible"<<endl;}
else
cout<<"possible"<<endl;}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:8: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   18 | if(a[j]=='#'){
      |    ~~~~^~~~~
Language: C++

H, W = map(int, input().split())
cnt = 0
for i in range(H):
    A = input()
    cnt += A.count('#')
if (H + W - 1 == cnt): print('Possible')
else: print('Impossible')

Compiler output:
a.cc:6:30: warning: multi-character literal with 8 characters exceeds 'int' size of 4 bytes
    6 | if (H + W - 1 == cnt): print('Possible')
      |                              ^~~~~~~~~~
a.cc:7:13: warning: multi-character literal with 10 characters exceeds 'int' size of 4 bytes
    7 | else: print('Impossible')
      |             ^~~~~~~~~~~~
a.cc:1:1: error: 'H' does not name a type
    1 | H, W = map(int, input().split())
      | ^
Language: C++

#include <iostream>
using namespace std;
int H, W;
void dfs(int x, int y, string *A) {
  if (x < W && y < H) {
    if (A[x + 1][y] == '#' && A[x][y + 1] == '#')
      return;
    else if (A[x + 1][y] == '#')
      dfs(x + 1, y, A);
    else if (A[x][y + 1] == '#')
      dfs(x, y + 1, A);
  }

  return;
}

int main() {
  cin >> H >> W;
  string A[H + 1];
  for (int i = 0; i < H; i++) cin >> A[i];
  dfs(0, 0, A);

  string ans;
  if (seen[H - 2][W - 1] || seen[H - 1][W - 2])
    ans = "Possible";
  else
    ans = "Impossible";
  cout << ans << endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:7: error: 'seen' was not declared in this scope
   24 |   if (seen[H - 2][W - 1] || seen[H - 1][W - 2])
      |       ^~~~
Language: C++

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <queue>

using namespace std;

#define rep(i,n) for(int i = 0; i < (n); ++i)
 
const int INF = 1 << 30;
const int INF_NEG = INF * -1;

struct sPoint{
    int x, y, breadth;
};

int H, W;
vector<string> A;
int breadth[20][20];

// #define GBN_DEBUG

int bfs(int startX, int startY)
{
    sPoint start = {startX, startY, 0};
    queue<sPoint> qPoint;
    qPoint.push(start);
    
    while(!qPoint.empty()){
        sPoint c = qPoint.front(); // current point
        qPoint.pop();

    
        if (c.x == W - 1 && c.y == H - 1) // ゴールなら
            return c.breadth; // 現在地の幅を返す
        
        if (c.y + 1 < H && A[c.y + 1][c.x] == '#'){ // 下を探索
            A[c.y + 1][c.x] = 'x';
            breadth[c.y + 1][c.x] = c.breadth + 1;
            sPoint next = {c.x, c.y + 1, c.breadth + 1};
            qPoint.push(next);
        }
        if (c.x + 1 < W && A[c.y][c.x + 1] == '#'){ // 右を探索
            A[c.y][c.x + 1] = 'x';
            breadth[c.y][c.x + 1] = c.breadth + 1;
            sPoint next = {c.x + 1, c.y, c.breadth + 1};
            qPoint.push(next);
        }
    }

    return 0;
}

int main()
{
    cin >> H >> W;
    A.resize(H + 9);
    rep(i, 20) rep(j, 20) breadth[i][j] = -1;
    rep(i, H) cin >> A[i];
    int ret = bfs(0, 0);

    if (!ret){ // ゴールに到達できなかった場合
        puts("Impossible"); return 0;
    }

#ifdef GBN_DEBUG
    cout << ret << endl << endl;
    if (ret){
        rep(i, H) cout << A[i] << endl;
    }
#endif

    // bfs() で通れた場所に 'x' 印
    // 以下で最短経路の道を 'o' に変更
    int x = W - 1, y = H - 1;
    int b = ret;
    while(b >= 0){
        A[y][x] = 'o';
        if (breadth[y - 1][x] == b - 1) --y; // 上か左のどちらかに幅が１つ小さい場所があるはず
        else --x;
        --b;

        if (y < 0) y = 0;
        if (x < 0) x = 0;
    }
#ifdef GBN_DEBUG
    rep(i, H) cout << A[i] << endl;
#endif

    bool ans = true;
    rep(i, H){
        if (!ans) break;
        int first_o = 0;
        rep(j, W) if (A[j][i] == 'o') {first_o = j; break;}
        for (j, W){
            if (A[j][i] == 'x' && j < first_o){ // 最初の x が 最初の o より左なら
                ans = false;
                break;
            }
        }
    }

    if (ans) puts("Possible");
    else puts("Impossible");
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:96:14: error: 'j' was not declared in this scope
   96 |         for (j, W){
      |              ^
a.cc:102:5: error: expected primary-expression before '}' token
  102 |     }
      |     ^
a.cc:101:10: error: expected ';' before '}' token
  101 |         }
      |          ^
      |          ;
  102 |     }
      |     ~     
a.cc:102:5: error: expected primary-expression before '}' token
  102 |     }
      |     ^
a.cc:101:10: error: expected ')' before '}' token
  101 |         }
      |          ^
      |          )
  102 |     }
      |     ~     
a.cc:96:13: note: to match this '('
   96 |         for (j, W){
      |             ^
a.cc:102:5: error: expected primary-expression before '}' token
  102 |     }
      |     ^
Language: C++

#include <bits/stdc++.h>
 
using namespace std;
 
#define lli long long int
#define REP(i,s,n) for(int i=s;i<n;i++)
#define MOD 1000000007
#define NUM 2520
#define DEBUG 0
#define mp(a,b) make_pair(a,b)
#define SORT(V) sort(V.begin(),V.end())
#define PI (3.141592653589794)
#define INF (1LL<<50)

signed main(){

	lli h,w;
	cin>>h>>w;

	lli data[10][10]={0}
	REP(i,0,h)REP(j,0,w){
		char tmp;
		cin>>tmp;
		data[i][j]=(tmp=='#');
	}

	lli sx=0,sy=0;

	if(data[sy][sx]==0){
		cout<<"Impossible"<<endl;
		return 0;
	}

	while(1){
		data[sy][sx]=0;
		if(data[sy][sx+1]==1)sx++;
		else{
			if(data[sy+1][sx]==1)sy++;
			else{
				break;
			}
		}
	}
	if(sy!=(h-1) && sx!=(w-1)){
		cout<<"Impossible"<<endl;
		return 0;
	}
	REP(i,0,h)REP(j,0,w){
		if(data[i][j]){
			cout<<"Impossible"<<endl;
			return 0;
		}
	}
	cout<<"Possible"<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:20: error: expected ',' or ';' before 'for'
    6 | #define REP(i,s,n) for(int i=s;i<n;i++)
      |                    ^~~
a.cc:21:9: note: in expansion of macro 'REP'
   21 |         REP(i,0,h)REP(j,0,w){
      |         ^~~
a.cc:21:13: error: 'i' was not declared in this scope
   21 |         REP(i,0,h)REP(j,0,w){
      |             ^
a.cc:6:32: note: in definition of macro 'REP'
    6 | #define REP(i,s,n) for(int i=s;i<n;i++)
      |                                ^
a.cc:21:23: error: 'j' was not declared in this scope
   21 |         REP(i,0,h)REP(j,0,w){
      |                       ^
a.cc:6:32: note: in definition of macro 'REP'
    6 | #define REP(i,s,n) for(int i=s;i<n;i++)
      |                                ^
Language: C++

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

int main() {
  int h,w;
  cin >> h >> w;
  vector<string> vec(h);
  for(int i=0;i<h;i++)
    cin >> vec[i];
  bool a=true;
  for(int i=0;i<h+w;i++){
    int k=0;
    for(int j=max(0,i-h);j<min(w,i);j++){
      if(vec.at(j).at(i-j)=="#"){
        k++;
        if(k==2){
          bool a=false;
          break;
        }
      }
    }
  if(a==true)
        cout << "Possible" << endl;
        else
        cout << "Impossible" << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:14:27: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   14 |       if(vec.at(j).at(i-j)=="#"){
      |          ~~~~~~~~~~~~~~~~~^~~~~
a.cc:26:2: error: expected '}' at end of input
   26 | }
      |  ^
a.cc:4:12: note: to match this '{'
    4 | int main() {
      |            ^
Language: C++

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

int main(){
    int h,w;
    cin >> h >> w;
    char a[h][w];
    for(int i=0;i<h;i++){
        for(int j=0;j<w;j++){
            cin >> a[i][j];
        }
    }
    string ans="Possible"
    for(int i=0;i<h-1;i++){
        for(int j=1;j<w;j++){
            if(a[i][j]=='#'&&a[i+1][j-1]=='#'){
                ans="Impossible";
            }
        }
    }
    cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:5: error: expected ',' or ';' before 'for'
   14 |     for(int i=0;i<h-1;i++){
      |     ^~~
a.cc:14:17: error: 'i' was not declared in this scope
   14 |     for(int i=0;i<h-1;i++){
      |                 ^
Language: C++

#include<bits/stdc++.h>

#define rep(i,N) for(int i=0;i<N;i++)
#define rep2(i,N) for(int i=1;i<=N;i++)
using namespace std;
long long  INF=1e18;
long long mod=1e9+7;
char maze[10][10];



int main(){

    int h,w;
    cin>>h>>w;
    
    int cnt=0;
    rep(i,h)rep(k,w){cin>>maze[i][k];
    if(maze[i][k]=='#')cnt++;
    }
    
    queue<int>q;
    int dx[2]={0,1};
    int dy[2]={1,0};

    q.push(0);
    q.push(0);
    bool ansans=(cnt ==h+w-1);

    while(!q.empty()){
    
        int nowx=q.front();q.pop();
        int nowy=q.front();q.pop();

        if(nowx==w-1 && nowy==h-1)break;

        int cnt2=0;

        rep(i,2){
            int nx=nowx+dx[i];
            int ny=nowy+dy[i];

            if(nx>=w||ny>=h)continue;

            if(maze[ny][nx]=='#'){
            cnt2++;
            q.push(nx);
            q.push(ny);
            }
        }

        if(cnt2!=1){
        ans=false;
        break;
        }
    }

    
    
    
    if(ans){
        cout<<"Possible"<<endl;
    }
    else{
        cout<<"Impossible"<<endl;
    }

    return 0;

}
/*
2 2
.#
.#

4 5
#....
##...
.#...
.####

4 5
##..#
.##..
..#..
..###
*/


Compiler output:
a.cc: In function 'int main()':
a.cc:53:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   53 |         ans=false;
      |         ^~~
      |         abs
a.cc:61:8: error: 'ans' was not declared in this scope; did you mean 'abs'?
   61 |     if(ans){
      |        ^~~
      |        abs
Language: C++

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

#define dump(x) cout << (x) << '\n'
#define Int int64_t
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()

Int INF = 1e18;
int inf = 1e9;
Int mod = 1e9+7;

int main() {
    Int h, w;
    cin >> h >> w;
    char f[10][10] = {};
    for (Int i = 0; i < h; i++) {
        for (Int j = 0; j < w; j++) {
            cin >> f[i][j];
        }
    }
    queue<pair<Int, Int>> q;
    q.push({0, 0);
    while (not q.empty()) {
        pair<Int, Int> p = q.front();
        q.pop();
        Int dx[] = {1, 0};
        Int dy[] = {0, 1};
        for (Int i = 0; i < 2; i++) {
            Int ny = dy[i] + p.fi;
            Int nx = dx[i] + p.se;
            if (ny < 0 or ny == h or nx < 0 or ny == w) continue;
            if (f[ny][nx == '.']) continue;
            f[p.fi][p.se] = '.';
            q.push({ny, nx});
            break;
        }
    }
    bool check = true;
    for (Int i = 0; i < h; i++) {
        for (Int j = 0; j < w; j++) {
            if (f[i][j] == '#') check = false;
        }
    }
    dump(not check ? "Impossible" : "Possible");
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:17: error: expected '}' before ')' token
   24 |     q.push({0, 0);
      |            ~    ^
Language: C++

#include "pch.h"
#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <queue>
#include <map>
#include <set>
#include <stack>
#include<algorithm>
#include<sstream>
#include<iomanip>
#include<deque>
#include<list>


using namespace std;

typedef long long ll;

typedef pair<int, int> pii;

const ll MOD_CONST = 1000000007;
const ll BIG_NUM = 1000000000000000000;
const int BIG_INT = 1000000000;



int main() {
	int h, w;
	cin >> h >> w;
	vector<string> a(h+2);
	a[0] = string(w + 2, ',');
	for (int i = 1;i <=h;i++) {
		string s;
		cin >> s;
		a[i] = ".";
		a[i] += s;
		a[i] += '.';
	}
	a[h + 1] = string(w + 2, ',');

	bool canConsist = true;
	for (int i = 1; i <=h;i++) {
		for (int j = 1; j <=w;j++) {
			if (i == h && j == w) {
				break;
			}
			if (a[i][j] == '#') {
				
				if (a[i + 1][j] != '#' && a[i][j + 1] != '#') {
					canConsist = false;
					break;
				}
				
				int cnt = 0;
				if (a[i][j + 1] == '#') {
					cnt++;
				}
				
				if (a[i][j - 1] == '#') {
					cnt++;
				}
				if (a[i + 1][j] == '#') {
					cnt++;
				}
				if (a[i - 1][j] == '#') {
					cnt++;
				}

				if (cnt > 2) {
					canConsist = false;
					break;
				}

			}
			
		}

		if (!canConsist) {
			break;
		}
		
	}


	cout << (canConsist ? "Possible" : "Impossible") << endl;
}



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

#include <bits/stdc++.h>
using namespace std;
int main(){
  int H,W;
  cin >> H >> W;
  int C = 0;
  char c;
  for (int i = 0; i < H * W; i++){
    cin >> c;
    if (c == '#') C++;
  }
  cout << (C = H + W - 1 ? "Possible" : "Impossible");
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:26: error: invalid conversion from 'const char*' to 'int' [-fpermissive]
   12 |   cout << (C = H + W - 1 ? "Possible" : "Impossible");
      |                ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
      |                          |
      |                          const char*