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

#include<iostream>
#include<vector>
using namespace std;
#define MAXY 1e6+1
#define MAXX 1e6+1
#define MOD 1e9+7

int X,Y;
vector<vector<int> > dp(MAXY,vector<int>(MAXX,0));

int main(){
  cin>>X>>Y;
  dp[0][0]=1;
  for(int i=0;i<Y;i++){
    for(int j=0;j<X&&j<=2*i;j++){
      if(i+1<Y&&j+2<X){
        dp[i+1][j+2]+=dp[i][j];
        dp[i+1][j+2]%=MOD;
      }
      if(i+2<Y&&j+1<X){
        dp[i+2][j+1]+=dp[i][j];
        dp[i+2][j+1]%=MOD;
      }
    }
  }
  cout<<dp[Y][X]<<endl;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:21: error: invalid operands of types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'double' to binary 'operator%'
   18 |         dp[i+1][j+2]%=MOD;
a.cc:18:21: note:   in evaluation of 'operator%=(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}, double)'
a.cc:22:21: error: invalid operands of types '__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type' {aka 'int'} and 'double' to binary 'operator%'
   22 |         dp[i+2][j+1]%=MOD;
a.cc:22:21: note:   in evaluation of 'operator%=(__gnu_cxx::__alloc_traits<std::allocator<int>, int>::value_type {aka int}, double)'
Language: C++

#include<bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define Rep(i,s,n) for(int i=s;i<n;i++)
#define fi first
#define se second
#define all(c) c.begin(),c.end()
typedef long long int ll;
typedef pair<int, int> P;
typedef long double ld;
void Ans(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}

const int mod = 1000000007;
struct mint {
  ll x; // typedef long long ll;
  mint(ll x=0):x((x%mod+mod)%mod){}
  mint operator-() const { return mint(-x);}
  mint& operator+=(const mint a) {
    if ((x += a.x) >= mod) x -= mod;
    return *this;
  }
  mint& operator-=(const mint a) {
    if ((x += mod-a.x) >= mod) x -= mod;
    return *this;
  }
  mint& operator*=(const mint a) {
    (x *= a.x) %= mod;
    return *this;
  }
  mint operator+(const mint a) const {
    mint res(*this);
    return res+=a;
  }
  mint operator-(const mint a) const {
    mint res(*this);
    return res-=a;
  }
  mint operator*(const mint a) const {
    mint res(*this);
    return res*=a;
  }
  mint pow(ll t) const {
    if (!t) return 1;
    mint a = pow(t>>1);
    a *= a;
    if (t&1) a *= *this;
    return a;
  }

  // for prime mod
  mint inv() const {
    return pow(mod-2);
  }
  mint& operator/=(const mint a) {
    return (*this) *= a.inv();
  }
  mint operator/(const mint a) const {
    mint res(*this);
    return res/=a;
  }
};
// combination mod prime
// https://www.youtube.com/watch?v=8uowVvQ_-Mo&feature=youtu.be&t=1619
struct combination {
  vector<mint> fact, ifact;
  combination(int n):fact(n+1),ifact(n+1) {
    assert(n < mod);
    fact[0] = 1;
    for (int i = 1; i <= n; ++i) fact[i] = fact[i-1]*i;
    ifact[n] = fact[n].inv();
    for (int i = n; i >= 1; --i) ifact[i-1] = ifact[i]*i;
  }
  mint operator()(int n, int k) {
    if (k < 0 || k > n) return 0;
    return fact[n]*ifact[k]*ifact[n-k];
  }
};

 
const int MOD = 1000000007;
using mint = Fp<MOD>;

int main(){
  int x,y;
  cin>>x>>y;
  if((x+y)%3!=0){
    cout<<0<<endl;
    return 0;
  }
  int a=x-(x+y)/3;
  int b=y-(x+y)/3;
  
  combination c(a+b+10);
  
  mint ans=c(a+b,a);
  
  cout<<ans.x<<endl;
}
  

Compiler output:
a.cc:81:14: error: 'Fp' does not name a type
   81 | using mint = Fp<MOD>;
      |              ^~
Language: C++

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

//2項係数ライブラリの読み込み
const int MAX = 510000;
const int MOD = 1000000007;

long long fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
long long COM(int n, int k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}


int main() {
	
	COMinit();//二項係数前処理
	 
	 
	int x,y;
	cin>>x>>y;
	
	
	int a=0,b=0;//操作をa,bとしてそれぞれ何回行うか？
	int ans=0;
	
	if(x==y){
		if(x%3!=0)break;
		a=x/3;
		b=y/3;
	}
	
	if(y>x){
		if((x-(y-x))%3!=0)break;
		a=(x-(y-x))/3+(y-x);
		b=(x-(y-x))/3;
	}
	
	if(x>y){
		if((y-(x-y))%3!=0)break;
		a=(y-(x-y))/3;
		b=(y-(x-y))/3+(x-y);
	}
	
	if(a==0&&b==0)cout<<0<<endl;
	else{
		cout<<COM(a+b,a)<<endl;
	}
	
	
}


Compiler output:
a.cc: In function 'int main()':
a.cc:45:27: error: break statement not within loop or switch
   45 |                 if(x%3!=0)break;
      |                           ^~~~~
a.cc:51:35: error: break statement not within loop or switch
   51 |                 if((x-(y-x))%3!=0)break;
      |                                   ^~~~~
a.cc:57:35: error: break statement not within loop or switch
   57 |                 if((y-(x-y))%3!=0)break;
      |                                   ^~~~~
Language: C++

    using namespace std;
     
    #define ll long long
    #define endl '\n'
    #define pb push_back
    #define loop(i, a, b) for (int i = a; i < b; i++)
     
    const ll mod = 1e9+7;
     
    ll expo_mod(ll x, ll n) //Exponenciação rápida com módulo
    {
        if (n == 1)
            return x%mod;
        ll t = expo_mod(x, n/2); //O resultado já é em módulo
        ll resul = ((t%mod) * (t%mod))%mod;
        if (n%2 == 1) //Se n é ímpar
            resul = ((resul%mod)*x%mod)%mod;
        return resul;
    }
     
    ll f(ll x){
      ll res = 1;
      for(int i = 2; i<=x; ++i) res = ((res%mod)*(i%mod))%mod;
      return res;
    }
     
    ll modulo(ll x)
    {
        ll r = x%mod;
        if (r < 0)
            r += mod;
        return r;
    }
     
    int main ()
    {
     
        ll x, y; cin >> x >> y;
     
        if ((x+y)%3 != 0)
        { //Não há solução
            cout << 0 << endl;
            return 0;
        }
     
     
        ll n = (x+y)/3;
     
        ll a = (2 * y - x)/3;
        ll b = (2 * x - y)/3;
     
        ll result = modulo( f(n) * expo_mod(f(n - a), mod - 2) * expo_mod(f(a), mod - 2));
     
        cout << result << endl;
     
        return 0;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:38:18: error: 'cin' was not declared in this scope
   38 |         ll x, y; cin >> x >> y;
      |                  ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 |     using namespace std;
a.cc:42:13: error: 'cout' was not declared in this scope
   42 |             cout << 0 << endl;
      |             ^~~~
a.cc:42:13: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:54:9: error: 'cout' was not declared in this scope
   54 |         cout << result << endl;
      |         ^~~~
a.cc:54:9: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: C++

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

const int MAX = 510000;
const int MOD = 1000000007;

ll fac[MAX], finv[MAX], inv[MAX];

void COMinit() {
  fac[0] = fac[1] = 1;
  finv[0] = finv[1] = 1;
  inv[1] = 1;
  for(int i = 2; i < MAX; i++) {
    fac[i] = fac[i - 1] * i % MOD;
    inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
    finv[i] = finv[i - 1] * inv[i] % MOD;
  }
}

ll COM(int n, int k) {
  if(n < k) return 0;
  if(n < 0 || k < 0) return 0;
  return fac[n] * (finv[k] * fiv[n - k] % MOD) % MOD;
}
int main() {
  int X, Y;
  cin >> X >> Y;
  vector<pair<int, int>> p;
  COMinit();

  ll a = (2 * Y - X) / 3;
  ll b = (2 * X - Y) / 3;
  ll answer = 0;
  
  answer += COM(a + b, a);

  cout << answer % 1000000007;

  
  return 0;
}

Compiler output:
a.cc: In function 'll COM(int, int)':
a.cc:24:30: error: 'fiv' was not declared in this scope; did you mean 'finv'?
   24 |   return fac[n] * (finv[k] * fiv[n - k] % MOD) % MOD;
      |                              ^~~
      |                              finv
Language: C++

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

const int MAX = 510000;
const int MOD = 1000000007;

ll fac[MAX], finv[MAX], inv[MAX];

void COMinit() {
  fac[0] = fac[1] = 1;
  finv[0] = finv[1] = 1;
  inv[1] = 1;
  for(int i = 2; i < MAX; i++) {
    fac[i] = fac[i - 1] * i % MOD;
    inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
    finv[i] = finv[i - 1] * inv[i] % MOD;
  }
}

ll COM(int n, int k) {
  if(n < k) return 0;
  if(n < 0 || k < 0) return 0;
  return fac[n] * (finv[k] * fnv[n - k] % MOD) % MOD;
}
int main() {
  int X, Y;
  cin >> X >> Y;
  vector<pair<int, int>> p;
  COMinit();

  ll a = (2 * Y - X) / 3;
  ll b = (2 * X - Y) / 3;
  ll answer = 0;
  
  answer += COM(a + b, a);

  cout << answer % 1000000007;

  
  return 0;
}

Compiler output:
a.cc: In function 'll COM(int, int)':
a.cc:24:30: error: 'fnv' was not declared in this scope; did you mean 'inv'?
   24 |   return fac[n] * (finv[k] * fnv[n - k] % MOD) % MOD;
      |                              ^~~
      |                              inv
Language: C++

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

const int MAX = 510000;
const int MOD = 1000000007;

ll fac[MAX], finv[MAX], inv[MAX];

void COMinit() {
  fac[0] = fac[1] = 1;
  finv[0] = finv[1] = 1;
  inv[1] = 1;
  for(int i = 2; i < MAX; i++) {
    fac[i] = fac[i - 1] * i % MOD;
    inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
    finv[i] = finv[i - 1] * inv[i] % MOD;
  }
}

ll COM(int n, int k) {
  if(n < k) return 0;
  if(n < 0 || k < 0) return 0;
  return fac[n] * (finv[i] * finv[n - k] % MOD) % MOD;
}
int main() {
  int X, Y;
  cin >> X >> Y;
  vector<pair<int, int>> p;
  COMinit();

  ll a = (2 * Y - X) / 3;
  ll b = (2 * X - Y) / 3;
  ll answer = 0;
  
  answer += COM(a + b, a);

  cout << answer % 1000000007;

  
  return 0;
}

Compiler output:
a.cc: In function 'll COM(int, int)':
a.cc:24:25: error: 'i' was not declared in this scope
   24 |   return fac[n] * (finv[i] * finv[n - k] % MOD) % MOD;
      |                         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
ll modpow(ll n, ll mod) {
  ll ans = 1;
  ll a = 1;
  while(n > 0) {
    if(n & 1) {
      ans *= a % mod;
      a = a * a % mod;
      n >> 1;
    }
  }

  return ans;
}
ll C(int s, int t) {
  ll d = 1;
  for(int i = s - t; i <= s; i++) {
    d *= i % 1000000007;
  }

  d = (d * modpow(i, 1000000005)) % 1000000007;
  return d;
}


int main() {
  int X, Y;
  cin >> X >> Y;
  vector<pair<int, int>> p;
  for(int a = 0; a <= X; a++) {
    if(Y - 2 * a == (X - a) / 2 && b >= 0) {
      p.emplace(make_pair(a, Y - 2 * a)); 
    }
  }
  ll answer = 0;
  for(int i = 0; i < p.size(); i++) {
    answer += modpow(p[i].first + p[i].second, p[i].first);
  }

  cout << answer % 1000000007;
  
  
  return 0;
}

Compiler output:
a.cc: In function 'll C(int, int)':
a.cc:23:19: error: 'i' was not declared in this scope
   23 |   d = (d * modpow(i, 1000000005)) % 1000000007;
      |                   ^
a.cc: In function 'int main()':
a.cc:33:36: error: 'b' was not declared in this scope
   33 |     if(Y - 2 * a == (X - a) / 2 && b >= 0) {
      |                                    ^
a.cc:34:16: error: no matching function for call to 'std::vector<std::pair<int, int> >::emplace(std::pair<int, int>)'
   34 |       p.emplace(make_pair(a, Y - 2 * a));
      |       ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/vector:66,
                 from /usr/include/c++/14/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:53,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_vector.h:1348:9: note: candidate: 'template<class ... _Args> std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::emplace(const_iterator, _Args&& ...) [with _Args = {_Args ...}; _Tp = std::pair<int, int>; _Alloc = std::allocator<std::pair<int, int> >]'
 1348 |         emplace(const_iterator __position, _Args&&... __args)
      |         ^~~~~~~
/usr/include/c++/14/bits/stl_vector.h:1348:9: note:   template argument deduction/substitution failed:
a.cc:34:26: note:   cannot convert 'std::make_pair<int&, int>(a, (Y - (2 * a)))' (type 'std::pair<int, int>') to type 'std::vector<std::pair<int, int> >::const_iterator'
   34 |       p.emplace(make_pair(a, Y - 2 * a));
      |                 ~~~~~~~~~^~~~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
#define all(x) (x).begin(),(x).end()
#define rep(i,n) for(ll i=0;i<(ll)(n);i++)
using namespace std;
typedef long long ll;
ll gcd(ll a,ll b){return b!=0?gcd(b,a%b):a;}
ll lcm(ll a,ll b){return a*b/gcd(a,b);}

const ll mod=1e9+7;

ll modpow(ll a,ll n){
    if(n==1) return a;
    if(n%2) return a*modpow(a*a%mod,(n-1)/2)%mod;
    else return modpow(a*a%mod,n/2);
}

ll modfact(ll na,ll nz){
    if(na==nz) return nz;
    else return na*fact(na-1,nz)%mod;
}

int main(){
    ll x,y;
    cin>>x>>y;
    ll cntx=0,cnty=0;
    while(x>0&&y>0){
        if(x/y<2){
            cnty++;
            x--;
            y-=2;
        }
        if(x/y==2){
            cntx+=y;
            x=y=0;
        }
    }
    if(x==0&&y==0){
        ll ans;
        cout<<modfact(x+y,x+1)*modpow(modfact(y,1),mod-2)%mod<<endl;
    }else cout<<0<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'll modfact(ll, ll)':
a.cc:19:20: error: 'fact' was not declared in this scope
   19 |     else return na*fact(na-1,nz)%mod;
      |                    ^~~~
Language: C++

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

int main() {
  int X, Y;
  cin >> X >> Y;
  vector<pair<int, int>> g;

  pair<int, int> p = make_pair(0, 0);

  g.emplace_back(p);
  que.emplace(p);
  queue<p> que;
  ll sum = 0;
  while(que.empty()) {
    p = que.front();
    que.pop();

    if(p.first == X && p.second == Y) { sum++; continue; }
    pair<int, int> next;
    if(p.first + 1 <= X && p.second + 2 <= Y) {
    next = make_pair(p.first + 1, p.second + 2);
    que.emplace(next);
    }

    if(p.first + 2 <= X && p.second + 1 <= Y) {
    next = make_pair(p.first + 2, p.second + 1);
    que.emplace(next);
    }


  }
  
  cout << sum % 1000000007;
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:3: error: 'que' was not declared in this scope
   13 |   que.emplace(p);
      |   ^~~
a.cc:14:10: error: type/value mismatch at argument 1 in template parameter list for 'template<class _Tp, class _Sequence> class std::queue'
   14 |   queue<p> que;
      |          ^
a.cc:14:10: note:   expected a type, got 'p'
a.cc:14:10: error: template argument 2 is invalid
Language: Java

import java.util.*;
public class Main {
	
    public static long gcd(long x,long y){
        if(x < y) return gcd(y, x);
        if(y == 0) return x;
        return gcd(y, x % y);
    }
    public static long lcm(long x,long y){                                                              
        return x*(y/gcd(x,y));                                                                                                                                                                                                                
    }
    public static long commod(long x,long y,long mod){
        if(x<=1 || y==0 || y==x) return 1; 
        return (commod(x-1,y-1) + commod(x-1,y))%mod;
    }
    public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		long x = sc.nextLong();
		long y = sc.nextLong();
        long ans = 0;
        if((x+y)%3==0 && y>=x/2 && y<=2*x){long n = (x+y)/3; 
                                           long k = x-n;
                                           long mod = 1000000007;
                                           ans = commod(n,k,mod);
                                          }
		System.out.println(ans);
	}
}


Compiler output:
Main.java:14: error: method commod in class Main cannot be applied to given types;
        return (commod(x-1,y-1) + commod(x-1,y))%mod;
                ^
  required: long,long,long
  found:    long,long
  reason: actual and formal argument lists differ in length
Main.java:14: error: method commod in class Main cannot be applied to given types;
        return (commod(x-1,y-1) + commod(x-1,y))%mod;
                                  ^
  required: long,long,long
  found:    long,long
  reason: actual and formal argument lists differ in length
2 errors
Language: Java

import java.util.*;
public class Main {
	
    public static long gcd(long x,long y){
        if(x < y) return gcd(y, x);
        if(y == 0) return x;
        return gcd(y, x % y);
    }
    public static long lcm(long x,long y){                                                              
        return x*(y/gcd(x,y));                                                                                                                                                                                                                
    }
    public static long commod(long x,long y){
        if(x<=1 || y==0 || y==x) return 1; 
        return (commod(x-1,y-1) + commod(x-1,y))%1000000007;
    }
    public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		long x = sc.nextLong();
		long y = sc.nextLong();
        long ans = 0;
        if((x+y)%3==0 && y>=x/2 && y<=2*x){long n = (x+y)/3; 
                                           long k = x-n;
                                           ans = com%mod(n,k);
                                          }
		System.out.println(ans);
	}
}


Compiler output:
Main.java:23: error: cannot find symbol
                                           ans = com%mod(n,k);
                                                 ^
  symbol:   variable com
  location: class Main
Main.java:23: error: cannot find symbol
                                           ans = com%mod(n,k);
                                                     ^
  symbol:   method mod(long,long)
  location: class Main
2 errors
Language: Java

import java.util.*;
public class Main {
	
    public static long gcd(long x,long y){
        if(x < y) return gcd(y, x);
        if(y == 0) return x;
        return gcd(y, x % y);
    }
    public static long lcm(long x,long y){                                                              
        return x*(y/gcd(x,y));                                                                                                                                                                                                                
    }
    public static long commod(long x,long y,long mod){
        if(x<=1 || y==0 || y==x) return 1; 
        return (com(x-1,y-1) + com(x-1,y))%mod;
    }
    public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		long x = sc.nextLong();
		long y = sc.nextLong();
        long ans = 0;
        if((x+y)%3==0 && y>=x/2 && y<=2*x){long n = (x+y)/3; 
                                           long k = x-n;
                                           long mod = 100000007;
                                           ans = com(n,k,mod);
                                          }
		System.out.println(ans);
	}
}


Compiler output:
Main.java:14: error: cannot find symbol
        return (com(x-1,y-1) + com(x-1,y))%mod;
                ^
  symbol:   method com(long,long)
  location: class Main
Main.java:14: error: cannot find symbol
        return (com(x-1,y-1) + com(x-1,y))%mod;
                               ^
  symbol:   method com(long,long)
  location: class Main
Main.java:24: error: cannot find symbol
                                           ans = com(n,k,mod);
                                                 ^
  symbol:   method com(long,long,long)
  location: class Main
3 errors
Language: Java

import java.util.*;
public class Main {
	
    public static long gcd(long x,long y){
        if(x < y) return gcd(y, x);
        if(y == 0) return x;
        return gcd(y, x % y);
    }
    public static long lcm(long x,long y){                                                              
        return x*(y/gcd(x,y));                                                                                                                                                                                                                
    }
    public static long com%mod(long x,long y){
        if(x<=1 || y==0 || y==x) return 1; 
        return (com(x-1,y-1) + com(x-1,y))%1000000007;
    }
    public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		long x = sc.nextLong();
		long y = sc.nextLong();
        long ans = 0;
        if((x+y)%3==0 && y>=x/2 && y<=2*x){long n = (x+y)/3; 
                                           long k = x-n;
                                           ans = com%mod(n,k);
                                          }
		System.out.println(ans);
	}
}


Compiler output:
Main.java:12: error: ';' expected
    public static long com%mod(long x,long y){
                          ^
Main.java:12: error: invalid method declaration; return type required
    public static long com%mod(long x,long y){
                           ^
2 errors
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp>

// increment
#define rep_n(_1, _2, _3, NAME, ...) NAME
#define rep_2(i, n) for (int(i) = 0; (i) < (int)(n); ++(i))
#define rep_3(i, initial, n) for (int(i) = (int)(initial); (i) < (int)(n); ++(i))
#define repeat(...) rep_n(__VA_ARGS__, rep_3, rep_2, rep_1)(__VA_ARGS__)
// decrement
#define rep_r_n(_1, _2, _3, NAME, ...) NAME
#define rep_r_2(i, n) for (int(i) = (int)(n); (i) > 0; (i)--)
#define rep_r_3(i, initial, n) for (int(i) = (int)(initial); (i) > (int)(n); (i)--)
#define repeat_r(...) rep_r_n(__VA_ARGS__, rep_r_3, rep_r_2)(__VA_ARGS__)
// define type definition
using namespace std;
typedef long long ll;
using mpint = boost::multiprecision::cpp_int; // 多倍長整数（任意精度）
typedef pair<int, int> P;

// define construct variable
const double EPS = numeric_limits<double>::epsilon();
// 10^9 + 7
const ll BIG_MOD = ll(1e9)+7;
const string ALPHABET = "abcdefghijklmnopqrstuvwxyz";

// define methods
// 最大公約数
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
// 最小公倍数
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
// char -> int
int ctoi(char c) { return (int)(c - '0'); }
// 素因数分解
vector< pair<ll, ll> > prime_factorize(ll n) {
  vector< pair<ll, ll> > p;
  for (ll i = 2; i * i <= n; i++) {
    if ((n % i) != 0) continue;
    p.push_back(make_pair(i, 0));
    while ((n % i) == 0) {
      n /= i;
      p[i].second += 1;
    }
    p.push_back(make_pair(n, 0));
  }

  if (n != 1) p.push_back(make_pair(n, 1));
  return p;
}
// 組み合わせの整合性を保つ（後ほど解析する）
ll modinv(ll a) {
	ll b = BIG_MOD, u = 1, v = 0;
	while (b) {
		ll t = a / b;
		a -= t * b;
		swap(a, b);
		u -= t * v;
		swap(u, v);
	}
	u %= BIG_MOD;
	if (u < 0) { u += BIG_MOD; }
	return u;
}
// 順列
ll permutation(ll n, ll m) {
	ll result = 1;
	for (ll i = n; i > n - m; i--) {
		result = (result * i) % BIG_MOD;
	}
	return result;
}
// 組み合わせ
ll combination(ll n, ll m) {
	ll p = permutation(n, m);
	ll div = 1;
	for (ll i = 2; i <= m; i++) {
		div = (div * i) % BIG_MOD;
	}
	return (p * modinv(div, BIG_MOD)) % BIG_MOD;
}

int main() {
	int X, Y;
	cin >> X >> Y;

	ll n = (X + Y) / 3;
	ll m = (2 * X - Y) / 3;

	if (X != n + m || Y != 2 * n - m || 0 > n || 0 > m || m > n) {
		cout << 0 << endl;
		return 0;
	}

	cout << (combination(n, m)) << endl;
  return 0;
}


Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_int.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_int.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
#include <boost/multiprecision/cpp_int.hpp>

// increment
#define rep_n(_1, _2, _3, NAME, ...) NAME
#define rep_2(i, n) for (int(i) = 0; (i) < (int)(n); ++(i))
#define rep_3(i, initial, n) for (int(i) = (int)(initial); (i) < (int)(n); ++(i))
#define repeat(...) rep_n(__VA_ARGS__, rep_3, rep_2, rep_1)(__VA_ARGS__)
// decrement
#define rep_r_n(_1, _2, _3, NAME, ...) NAME
#define rep_r_2(i, n) for (int(i) = (int)(n); (i) > 0; (i)--)
#define rep_r_3(i, initial, n) for (int(i) = (int)(initial); (i) > (int)(n); (i)--)
#define repeat_r(...) rep_r_n(__VA_ARGS__, rep_r_3, rep_r_2)(__VA_ARGS__)
// define type definition
using namespace std;
typedef long long ll;
using mpint = boost::multiprecision::cpp_int; // 多倍長整数（任意精度）
typedef pair<int, int> P;

// define construct variable
const double EPS = numeric_limits<double>::epsilon();
// 10^9 + 7
const ll BIG_MOD = ll(1e9)+7;
const string ALPHABET = "abcdefghijklmnopqrstuvwxyz";

// define methods
// 最大公約数
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
// 最小公倍数
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
// char -> int
int ctoi(char c) { return (int)(c - '0'); }
// 素因数分解
vector< pair<ll, ll> > prime_factorize(ll n) {
  vector< pair<ll, ll> > p;
  for (ll i = 2; i * i <= n; i++) {
    if ((n % i) != 0) continue;
    p.push_back(make_pair(i, 0));
    while ((n % i) == 0) {
      n /= i;
      p[i].second += 1;
    }
    p.push_back(make_pair(n, 0));
  }

  if (n != 1) p.push_back(make_pair(n, 1));
  return p;
}
// 組み合わせの整合性を保つ（後ほど解析する）
ll modinv(ll a) {
	ll b = BIG_MOD, u = 1, v = 0;
	while (b) {
		ll t = a / b;
		a -= t * b;
		swap(a, b);
		u -= t * v;
		swap(u, v);
	}
	u %= BIG_MOD;
	if (u < 0) { u += BIG_MOD; }
	return u;
}
// 順列
ll permutation(ll n, ll m) {
	ll result = 1;
	for (ll i = n; i > n - m; i--) {
		result = (result * i) % BIG_MOD;
	}
	return result;
}
// 組み合わせ
ll combination(ll n, ll m) {
	ll p = permutation(n, m);
	ll div = 1;
	for (ll i = 2; i <= m; i++) {
		div = (div * i) % BIG_MOD;
	}
	return (p * modinv(div)) % BIG_MOD;
}

int main() {
	int X, Y;
	cin >> X >> Y;

	// n + 2m = X
	// 2n + m = Y を解く
	ll n = (X + Y) / 3;
	ll m = (2 * X - Y) / 3;

	if ((X+Y) % 3 > 0 || 0 > n || 0 > m || m > n {
		cout << 0 << endl;
		return 0;
	}

	ll result = 0;

	// _(n+m)C_n を解く
	ll a = n+m, b = n;
	cout << (combination(n+m, n)) << endl;
  return 0;
}


Compiler output:
a.cc:2:10: fatal error: boost/multiprecision/cpp_int.hpp: No such file or directory
    2 | #include <boost/multiprecision/cpp_int.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include <bits/stdc++.h>
using namespace std;
int64_t mod=1000000007;
int64_t k(int64_t c){
  if(c==0) return 1;
  else return c*k(c-1)%mod;
}
int64_t g(int64_t d,int64_t md){
  int e=d
  for(int i=0; i<md-2; i++){
    e=e*d%mod;
  }
  return e;
}

int main(){
  int64_t x,y;
  cin >> x >> y;
  int64_t step=(x+y)/3;
  int64_t a=x-step;
  int64_t b=y-step;
  if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)*g(k(b),mod)*g(k(a),mod)%mod << endl;
  else cout << 0 << endl;
}
  


Compiler output:
a.cc: In function 'int64_t g(int64_t, int64_t)':
a.cc:10:3: error: expected ',' or ';' before 'for'
   10 |   for(int i=0; i<md-2; i++){
      |   ^~~
a.cc:10:16: error: 'i' was not declared in this scope
   10 |   for(int i=0; i<md-2; i++){
      |                ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int64_t mod=1000000007;
int64_t k(int64_t c){
  if(c==0) return 1;
  else return c*k(c-1)%mod;
}
int64_t g(int64_t d,int64_t md){
  if(md==1) return d;
  else return d*(g(d,md-1))%mod;
}

int main(){
  int64_t x,y;
  cin >> x >> y;
  int64_t step=(x+y)/3;
  int64_t a=x-step;
  int64_t b=y-step;
  if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)*g(k(b))*g(k(a))%mod << endl;
  else cout << 0 << endl;
}
  


Compiler output:
a.cc: In function 'int main()':
a.cc:19:46: error: too few arguments to function 'int64_t g(int64_t, int64_t)'
   19 |   if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)*g(k(b))*g(k(a))%mod << endl;
      |                                             ~^~~~~~
a.cc:8:9: note: declared here
    8 | int64_t g(int64_t d,int64_t md){
      |         ^
a.cc:19:54: error: too few arguments to function 'int64_t g(int64_t, int64_t)'
   19 |   if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)*g(k(b))*g(k(a))%mod << endl;
      |                                                     ~^~~~~~
a.cc:8:9: note: declared here
    8 | int64_t g(int64_t d,int64_t md){
      |         ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
int64_t mod=1000000007;
int64_t k(int64_t c){
  if(c==0) return 1;
  else return c*k(c-1)%MOD;
}

int main(){
  int64_t x,y;
  cin >> x >> y;
  int64_t step=(x+y)/3;
  int64_t a=x-step;
  int64_t b=y-step;
  if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)/(k(b)*k(a)) << endl;
  else cout << 0 << endl;
}
  
  


Compiler output:
a.cc: In function 'int64_t k(int64_t)':
a.cc:6:24: error: 'MOD' was not declared in this scope
    6 |   else return c*k(c-1)%MOD;
      |                        ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int64_t mod=1000000007;
int64_t k(int64_t c){
  if(c=0) return 1;
  else return a*k(c-1)%MOD;
}

int main(){
  int64_t x,y;
  cin >> x >> y;
  int64_t step=(x+y)/3;
  int64_t a=x-step;
  int64_t b=y-step;
  if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)/(k(b)*k(a)) << endl;
  else cout << 0 << endl;
}
  
  


Compiler output:
a.cc: In function 'int64_t k(int64_t)':
a.cc:6:15: error: 'a' was not declared in this scope
    6 |   else return a*k(c-1)%MOD;
      |               ^
a.cc:6:24: error: 'MOD' was not declared in this scope
    6 |   else return a*k(c-1)%MOD;
      |                        ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int64_t mod=1000000007;
int64_t k(int64_t c){
  if(a=0) return 1;
  else return a*k(c-1)%MOD;
}

int main(){
  int64_t x,y;
  cin >> x >> y;
  int64_t step=(x+y)/3;
  int64_t a=x-step;
  int64_t b=y-step;
  if((x+y)%3==0&&a>=0&&b>=0)cout << k(step)/(k(b)*k(a)) << endl;
  else cout << 0 << endl;
}
  
  

Compiler output:
a.cc: In function 'int64_t k(int64_t)':
a.cc:5:6: error: 'a' was not declared in this scope
    5 |   if(a=0) return 1;
      |      ^
a.cc:6:24: error: 'MOD' was not declared in this scope
    6 |   else return a*k(c-1)%MOD;
      |                        ^~~
Language: C++

# coding:utf-8

import sys
import math
import time
#import numpy as np
import collections
from collections import deque
from collections import Counter
import queue
import copy
import bisect
import heapq
import itertools

def comb(n, k, mod):
    ret = 1
    for i in range(1, k + 1):
        ret = ret * (n - i + 1) % mod
        ret = ret * pow(i, mod - 2, mod) % mod
    return ret

#sys.setrecursionlimit(10**7)
#N, Q = map(int, input().split())
#G = [list(input()) for i in range(H)]
#INF = V * 10001
#A = [int(i) for i in input().split()]
#AB = [list(map(int, input().split())) for _ in range(K)]

X, Y = map(int, input().split())
mod = 10**9+7
ans = 0

if(X<Y):
  X, Y = Y, X

XY = X-Y

if((X - 2*XY)%3 == 0 and (Y-XY)%3 == 0):
  XX = XY+(X- 2*XY)//3
  YY = (X-2*XY)//3
  #print(XX,YY)
  if(YY==0):
    print(1)
  else:
    ans = comb(XX+YY, XX, mod)
    print(ans%mod)
else:
  print(0)




Compiler output:
a.cc:1:3: error: invalid preprocessing directive #coding
    1 | # coding:utf-8
      |   ^~~~~~
a.cc:6:2: warning: #import is a deprecated GCC extension [-Wdeprecated]
    6 | #import numpy as np
      |  ^~~~~~
a.cc:6:9: error: #import expects "FILENAME" or <FILENAME>
    6 | #import numpy as np
      |         ^~~~~
a.cc:23:2: error: invalid preprocessing directive #sys
   23 | #sys.setrecursionlimit(10**7)
      |  ^~~
a.cc:24:2: error: invalid preprocessing directive #N
   24 | #N, Q = map(int, input().split())
      |  ^
a.cc:25:2: error: invalid preprocessing directive #G
   25 | #G = [list(input()) for i in range(H)]
      |  ^
a.cc:26:2: error: invalid preprocessing directive #INF
   26 | #INF = V * 10001
      |  ^~~
a.cc:27:2: error: invalid preprocessing directive #A
   27 | #A = [int(i) for i in input().split()]
      |  ^
a.cc:28:2: error: invalid preprocessing directive #AB
   28 | #AB = [list(map(int, input().split())) for _ in range(K)]
      |  ^~
a.cc:42:4: error: invalid preprocessing directive #print
   42 |   #print(XX,YY)
      |    ^~~~~
a.cc:3:1: error: 'import' does not name a type
    3 | import sys
      | ^~~~~~
a.cc:3:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long LL;
const int maxx = 1e6 + 7;
const int Mod = 1e9 + 7;
LL x, y;
LL fac[maxx];

LL qwe(LL a, LL n) { //快速幂
    LL res = 1LL;
    while(n) {
        if(n & 1) res = res * a % Mod;
        a = a * a % Mod;
        n >>= 1LL;
    }
    return res % Mod;
}

LL inv(LL x) { //逆元
	return qwe(x, Mod - 2) % Mod;
}

LL C(LL n, LL m) { //组合数
	return 1LL * fac[n] * inv(fac[n - m]) * inv(fac[m]) % Mod; 
}

int main() {
	fac[0] = 1;
    for(int i = 1; i < N; i++) fac[i] = 1LL * fac[i - 1] * i % Mod;
	cin >> x >> y;
	LL a = x - (x + y) / 3;
	LL b = y - (x + y) / 3;
	if((x + y) % 3) cout << 0 << endl;
	else cout << C(a + b, a) << endl;
	return 0;
}

/*
设"右1下2"进行了a次, "下1右2"转移b次
题意转化为: 有a个1与b个0进行组合, 可以制造出多少不同的串
=> ans = C(a + b, a) = C(a + b, b)
*/

Compiler output:
a.cc: In function 'int main()':
a.cc:29:24: error: 'N' was not declared in this scope
   29 |     for(int i = 1; i < N; i++) fac[i] = 1LL * fac[i - 1] * i % Mod;
      |                        ^
Language: Java

import java.util.*;
import java.awt.Point;

public class Main {
	static int mod = 1000000007;
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		long x = sc.nextLong();
		long y = sc.nextLong();
		if((x+y)%3 != 0) {
			System.out.println(0);
			return;
		}
		long n = (x+y)/3;
		x = x-n;
		y = y-n;
		if(x<0 || y<0) {
			System.out.println(0);
			return;
		}
		System.out.println(modCombination(x+y, x, mod));

		}
	}
	public static long modCombination(long n, long r, long mod) {
		long top = 1;
		long bottom = 1;
		for (int i = 1; i <= r; i++) {
			top *= n;
			top %= mod;
			n--;
			bottom *= i;
			bottom %= mod;
		}
		bottom = modPow(bottom, mod-2, mod);
		return (top * bottom) % mod;
	}
	public static long modPow(long base, long exp, long mod) {
		if (exp == 0)
			return 1;
		if (exp == 1)
			return base % mod;
		if (exp % 2 == 1)
			return (base * modPow(base, exp - 1, mod) % mod);
		long tmp = modPow(base, exp / 2, mod);
		return (tmp * tmp) % mod;
	}
}


Compiler output:
Main.java:25: error: unnamed classes are a preview feature and are disabled by default.
	public static long modCombination(long n, long r, long mod) {
	              ^
  (use --enable-preview to enable unnamed classes)
Main.java:48: error: class, interface, enum, or record expected
}
^
2 errors
Language: C++

#include <bits/stsdc++.h>

using namespace std;
#define maxn 1000001

int v[maxn][maxn]={-1};

int count(int i,int j){
  if(i<0 || j<0)return 0;
  if(i==0 && j==0)return 1;
  if(v[i][j]!=-1)return v[i][j];
   int a = count(i-1,j-2)%(1000000007);
   int b = count(i-2,j-2)%(1000000007);
   return v[i][j]=(a+b)%(1000000007);
  
}

int main(){
  int x,y;
  cin >> x >> y;
  count(x,y);
  cout << v[x][y];
}

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

#include <iostream>
#include <string>
using namespace std;
typedef long long ll;
int T[2000005]={0};
const int MAX = 2000005;
const ll MOD = 1000000007;

ll fac[MAX], finv[MAX], inv[MAX];
ll A[MAX] = { 0 };
ll B[MAX] = { 0 };
// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++) {
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD % i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
ll COM(int n, int k) {
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}

int main(){
  COMinit();
  int x;int y;
  cin>>x>>y;
  int s=2*x-y;int t=2*y-x;
  if((s%3!=0||t%3!=0||s<0||t<0)cout<<0<<endl;
  else cout<<COM(s/3+t/3,s/3)<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:36:32: error: expected ';' before 'cout'
   36 |   if((s%3!=0||t%3!=0||s<0||t<0)cout<<0<<endl;
      |                                ^~~~
      |                                ;
a.cc:37:3: error: expected primary-expression before 'else'
   37 |   else cout<<COM(s/3+t/3,s/3)<<endl;
      |   ^~~~
a.cc:36:46: error: expected ')' before 'else'
   36 |   if((s%3!=0||t%3!=0||s<0||t<0)cout<<0<<endl;
      |     ~                                        ^
      |                                              )
   37 |   else cout<<COM(s/3+t/3,s/3)<<endl;
      |   ~~~~
Language: C++

#include <iostream>
#include <vector>
#include <cmath>
#include <iomanip>
#include <algorithm>
using namespace std;
#define rep(i,n) for(int i=0; i<(n); i++)

int main() {
	long long x,y,p=1000000007;
	long long ans=0,ue=1,st=1;
	cin>>x>>y;
    if((x+y)%3==0&&2*x>=y&&2*y>=x){
        int k=min((2*x-y)/3,(2*y-x)/3);
        int n=(x+y)/3;
        for(int i=n;i>n-k;i--){
            ue*=i;
            ue%=p;
        }
        for(int j=1;j<=k;j++){
            st*=j;
            st%=p;
        }
        vector<long long>bp(40);
        bp[1]=st;
        for(int a=2;a<40;a++){
            bp[a]=(bp[a-1]*bp[a-1])%p;
        }
        long long b=p-2;
        int cnt=1;
        while(b){
            if(b%2){
                ue*=bp[cnt];
                ue%=p;
            }
            b/=2;
            cnt++;
        }
    }
    cout<<ue;
	return 0;
}
#include <iostream>
#include <vector>
#include <cmath>
#include <iomanip>
#include <algorithm>
using namespace std;
#define rep(i,n) for(int i=0; i<(n); i++)

int main() {
	long long x,y,p=1000000007;
	long long ans=0,ue=1,st=1;
	cin>>x>>y;
    if((x+y)%3==0&&2*x>=y&&2*y>=x){
        int k=min((2*x-y)/3,(2*y-x)/3);
        int n=(x+y)/3;
        for(int i=n;i>n-k;i--){
            ue*=i;
            ue%=p;
        }
        for(int j=1;j<=k;j++){
            st*=j;
            st%=p;
        }
        vector<long long>bp(40);
        bp[1]=st;
        for(int a=2;a<40;a++){
            bp[a]=(bp[a-1]*bp[a-1])%p;
        }
        long long b=p-2;
        int cnt=1;
        while(b){
            if(b%2){
                ue*=bp[cnt];
                ue%=p;
            }
            b/=2;
            cnt++;
        }
        ans=ue;
    }
    cout<<ans;
	return 0;
}

Compiler output:
a.cc:51:5: error: redefinition of 'int main()'
   51 | int main() {
      |     ^~~~
a.cc:9:5: note: 'int main()' previously defined here
    9 | int main() {
      |     ^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(i, n) for(ll i = 0; i < (ll)(n); i++)
#define rep2(i, a, n) for(ll i = a; i < (ll)(n); i++)
#define memi cout << endl
#define kono(n) cout << fixed << setprecision(n)
#define all(c) (c).begin(), (c).end()
#define pb push_back
#define hina cout << ' '
#define in(n) cin >> n
#define in2(n, m) cin >> n >> m
#define in3(n, m, l) cin >> n >> m >> l
#define out(n) cout << n
const ll mei = (ll)1e9 + 7;

int main(){
  ll a, b, x, y, k;
  in2(x, y);
  if((x + y) % 3 != 0){
    out(0);
    memi;
    return 0;
  }
  a = (2 * x - y) / 3;
  b = (2 * y - x) / 3;
  if(a < 0 || b < 0){
    out(0);
    memi;
    return 0;
  }
  x = y = 1;
  rep2(i, a + 1, a + b + 1)
    x = x * i % mei;
  rep2(i, b + 1)
    y = y * i % mei;
  vector<ll> c(50, y); d(50, 2);
  rep(i, 49)
    c[i + 1] = c[i] * c[i] % mei;
  rep(i, 48)
    d[i + 2] = d[i + 1] * d[i + 1];
  d[0] = 1;
  k = mei - 2;
  a = 49;
  while(k > 0){
    if(k >= d[a]){
      x = x * c[a] % mei;
      k -= d[a];
      a--;
    }
    else
      a--;
  }
  out(x);
  memi;
}

Compiler output:
a.cc:35:16: error: macro "rep2" requires 3 arguments, but only 2 given
   35 |   rep2(i, b + 1)
      |                ^
a.cc:5:9: note: macro "rep2" defined here
    5 | #define rep2(i, a, n) for(ll i = a; i < (ll)(n); i++)
      |         ^~~~
a.cc: In function 'int main()':
a.cc:35:3: error: 'rep2' was not declared in this scope
   35 |   rep2(i, b + 1)
      |   ^~~~
a.cc:37:24: error: 'd' was not declared in this scope
   37 |   vector<ll> c(50, y); d(50, 2);
      |                        ^
Language: C++

 #include <iostream>
#include <cstdio>
#include <algorithm>
#include <cmath>
#include <vector>
#include <list>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <cctype>
#include <cassert>
#include <climits>
#include <string>
#include <bitset>
#include <cfloat>
#include <unordered_set>
#include <iomanip>
using namespace std;
typedef long double ld;
typedef long long int ll;
typedef unsigned long long int ull;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<char> vc;
typedef vector<bool> vb;
typedef vector<double> vd;
typedef vector<string> vs;
typedef vector<ll> vll;
typedef vector<pair<int,int> > vpii;
typedef vector<vector<int> > vvi;
typedef vector<vector<char> > vvc;
typedef vector<vector<string> > vvs;
typedef vector<vector<ll> > vvll;
#define rep(i,n) for(int i = 0; i < (n); ++i)
#define rrep(i,n) for(int i = 1; i <= (n); ++i)
#define irep(it, stl) for(auto it = stl.begin(); it != stl.end(); it++)
#define drep(i,n) for(int i = (n) - 1; i >= 0; --i)
#define fin(ans) cout << (ans) << endl
#define mp(p,q) make_pair(p, q)
#define pb(n) push_back(n)
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define Sort(a) sort(a.begin(), a.end())
#define Rort(a) sort(a.rbegin(), a.rend())
#define MATHPI acos(-1)
int dx8[8] = {1, 0, -1, 0, 1, -1, -1, 1};
int dy8[8] = {0, 1, 0, -1, 1, 1, -1, -1};
int dx4[4] = {1, 0, -1, 0};
int dy4[4] = {0, 1, 0, -1};
template <class T> inline bool chmax(T& a,T b){if(a<b){a=b;return 1;} return 0;}
template <class T> inline bool chmin(T& a,T b){if(a>b){a=b;return 1;} return 0;}
struct io{io(){ios::sync_with_stdio(false);cin.tie(0);}};
const int INF = INT_MAX;
const ll LLINF = 1LL<<60;
const ll MOD = 1000000007;
const double EPS = 1e-9;

//ポイント、駒の動きはパスカルの三角形、これを利用するか、単に連立方程式を立ててコンビネーションか、個人的には連立方程式のほうが好み
const ll MAX = 10000000;
long long fac[MAX], finv[MAX], inv[MAX];
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}
long long COM(int n, int k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
int main(void) {

    COMinit();
    int x,y;
    cin >> x >> y;
    //a+2b=X,2a+b=Yの連立方程式をaを全探索することによって解く
    rep(a,x+1){
        int b = x - a;
        b /=2;
        if(2*a+b == y){
            fin(COM(a+b,a));
            return;
        }
    }

    fin(0);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:88:13: error: return-statement with no value, in function returning 'int' [-fpermissive]
   88 |             return;
      |             ^~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int MAX = 510000000;
const int MOD = 1000000007;

long long fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
long long COM(long long n, long long k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
int main() {
long x,y;
cin >> x >> y;
if((x+y)%3==0){
long long aa,bb;
aa=(2*y-x)/3;
bb=(2*x-y)/3;
COMinit();

if(aa>=0 && bb>=0){

 cout << COM(aa+bb,aa) << endl;
 return 0;
}}
else cout << "0" <<endl;

}

Compiler output:
/tmp/ccRYiNXs.o: in function `COMinit()':
a.cc:(.text+0x20): relocation truncated to fit: R_X86_64_PC32 against symbol `finv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x2b): relocation truncated to fit: R_X86_64_PC32 against symbol `finv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x32): relocation truncated to fit: R_X86_64_PC32 against symbol `finv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x39): relocation truncated to fit: R_X86_64_PC32 against symbol `inv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0xd4): relocation truncated to fit: R_X86_64_PC32 against symbol `inv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x135): relocation truncated to fit: R_X86_64_PC32 against symbol `inv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x150): relocation truncated to fit: R_X86_64_PC32 against symbol `finv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x168): relocation truncated to fit: R_X86_64_PC32 against symbol `inv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x1b7): relocation truncated to fit: R_X86_64_PC32 against symbol `finv' defined in .bss section in /tmp/ccRYiNXs.o
/tmp/ccRYiNXs.o: in function `COM(long long, long long)':
a.cc:(.text+0x232): relocation truncated to fit: R_X86_64_PC32 against symbol `finv' defined in .bss section in /tmp/ccRYiNXs.o
a.cc:(.text+0x24d): additional relocation overflows omitted from the output
collect2: error: ld returned 1 exit status
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int MAX = 510000;
const int MOD = 1000000007;

long long fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
long long COM(long long n, long long k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
int main() {
long x,y;
cin >> x >> y;
if((x+y)%3==0){
long long aa,bb;
aa=(2*y-x)/3;
bb=(2*x-y)/3;
COMinit();

if(a>=0 && b>=0){

 cout << COM(aa+bb,aa) << endl;
 return 0;
}}
else cout << "0" <<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:35:4: error: 'a' was not declared in this scope; did you mean 'aa'?
   35 | if(a>=0 && b>=0){
      |    ^
      |    aa
a.cc:35:12: error: 'b' was not declared in this scope; did you mean 'bb'?
   35 | if(a>=0 && b>=0){
      |            ^
      |            bb
Language: C++

#include <bits/stdc++.h>
using namespace std;
const int MAX = 510000;
const int MOD = 1000000007;

long long fac[MAX], finv[MAX], inv[MAX];

// テーブルを作る前処理
void COMinit() {
    fac[0] = fac[1] = 1;
    finv[0] = finv[1] = 1;
    inv[1] = 1;
    for (int i = 2; i < MAX; i++){
        fac[i] = fac[i - 1] * i % MOD;
        inv[i] = MOD - inv[MOD%i] * (MOD / i) % MOD;
        finv[i] = finv[i - 1] * inv[i] % MOD;
    }
}

// 二項係数計算
long long COM(long long n, long long k){
    if (n < k) return 0;
    if (n < 0 || k < 0) return 0;
    return fac[n] * (finv[k] * finv[n - k] % MOD) % MOD;
}
int main() {
long x,y;
cin >> x >> y;
if((x+y)%3==0)){
long long aa,bb;
aa=(2*y-x)/3;
bb=(2*x-y)/3;
COMinit();

if(a>=0 && b>=0){

 cout << COM(aa+bb,aa) << endl;
 return 0;
}}
else cout << "0" <<endl;

}

Compiler output:
a.cc: In function 'int main()':
a.cc:29:15: error: expected primary-expression before ')' token
   29 | if((x+y)%3==0)){
      |               ^