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

#include<bits/stdc++.h>
using namespace std;
using ll = long long;
ll n;
ll m;
const ll mod = 1e9+7;
const ll maxn = 500005;
ll inv[maxn+3];
ll fac[maxn]+3;
ll qpow(ll x,ll n)
{
    ll res =1;
    while(n>0)
    {
        if(n&1) res=res*x%mod;
        x=x*x%mod;
        n>>=1;
    }
    return res;
}
inline ll A(ll n,ll m){
    return fac[n]*inv[n-m]%mod;
}
inline ll C(ll n,ll m){
	return A(n,m)*inv[m]%mod;
}

int main(){
	//freopen("in.txt","r",stdin);
	cin>>n>>m;
	fac[0] = 1;
	fac[1] = 1;
	for(ll i=2;i<maxn;i++){
		fac[i] = i * fac[i-1];
		fac[i] %= mod;
	}
	inv[0]=1;inv[1]=1;      //inv[0]=1 !!! 
    for(ll i=2;i<=maxn;i++){
        inv[i]=(mod-mod/i)*inv[mod%i]%mod;
    }
    for(ll i=2;i<=maxn;i++){
        inv[i]=(inv[i]*inv[i-1])%mod;
    }
    ll ans =0;
    for(ll i=0;i<=n;i++){
    	ll tmp = C(n,i) * A(m-i,n-i);
    	tmp %= mod;
    	if(i%2==0){
    		ans += tmp;
		}else ans -= tmp;
		ans %= mod;
	}
	ans *= A(m,n);
	ans += mod;
	ans %= mod;
	cout<<ans<<endl;
	//cout<<tmp<<endl;
	return 0;
}

Compiler output:
a.cc:9:13: error: expected initializer before '+' token
    9 | ll fac[maxn]+3;
      |             ^
a.cc: In function 'll A(ll, ll)':
a.cc:22:12: error: 'fac' was not declared in this scope
   22 |     return fac[n]*inv[n-m]%mod;
      |            ^~~
a.cc: In function 'int main()':
a.cc:31:9: error: 'fac' was not declared in this scope
   31 |         fac[0] = 1;
      |         ^~~
Language: Java


import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int m = sc.nextInt();
    long[] kai = new long[5000001];
    kai[0] = 1;
    long MOD = (long)Math.pow(10, 9) + 7;
    for(long i = 1; i < 5000001; i++) {
      kai[(int)i] = (i * kai[(int)(i - 1)]) % MOD;
    }
    long ans = 0;
    for(int k = 0; k <= n; k++) {
      long t1 = kai[n];
      t1 = (t1 * func(kai[n - k], MOD - 2)) % MOD;
      t1 = (t1 * func(kai[k], MOD - 2)) % MOD;
      long t2 = kai[m];
      t2 = (t2 * func(kai[m - k], MOD - 2)) % MOD;
      long t3 = kai[m - k];
      t3 = (t3 * func(kai[m - n], MOD - 2)) % MOD;
      t3 = (t3 * t3) % MOD;
      long t = (t1 * t2) % MOD;
      t = (t * t3) % MOD;
      if((k % 2) == 0) {
        ans = (ans + t) % MOD;
      } else {
        ans = (ans - t + MOD) % MOD;
      }
    }
    System.out.println(ans);
  }

  public static long func(long a, long x) {
    if(x == 0) return 1;
    if((x % 2) == 0) {
      long t = func(a, x / 2);
      return (t * t) % MOD;
    } else {
      return (a * func(a, x - 1)) % MOD;
    }
  }
}

Compiler output:
Main.java:40: error: cannot find symbol
      return (t * t) % MOD;
                       ^
  symbol:   variable MOD
  location: class Main
Main.java:42: error: cannot find symbol
      return (a * func(a, x - 1)) % MOD;
                                    ^
  symbol:   variable MOD
  location: class Main
2 errors
Language: C++

#inclde<iostream>
int m=1e9+7;
int main(){int N,M;std::cin>>N>>M;long d[N+1],a=M-N+1;d[0]=1,d[1]=M-N;for(int i=2;i<=N;i++){d[i]=((M-N+i-1)*d[i-1]+(i-1)*d[i-2])%m;a=a*(M-i+2)%m;}std::cout<<a*d[N]%m;}


Compiler output:
a.cc:1:2: error: invalid preprocessing directive #inclde; did you mean #include?
    1 | #inclde<iostream>
      |  ^~~~~~
      |  include
a.cc: In function 'int main()':
a.cc:3:25: error: 'cin' is not a member of 'std'
    3 | int main(){int N,M;std::cin>>N>>M;long d[N+1],a=M-N+1;d[0]=1,d[1]=M-N;for(int i=2;i<=N;i++){d[i]=((M-N+i-1)*d[i-1]+(i-1)*d[i-2])%m;a=a*(M-i+2)%m;}std::cout<<a*d[N]%m;}
      |                         ^~~
a.cc:1:1: note: 'std::cin' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
  +++ |+#include <iostream>
    1 | #inclde<iostream>
a.cc:3:152: error: 'cout' is not a member of 'std'
    3 | int main(){int N,M;std::cin>>N>>M;long d[N+1],a=M-N+1;d[0]=1,d[1]=M-N;for(int i=2;i<=N;i++){d[i]=((M-N+i-1)*d[i-1]+(i-1)*d[i-2])%m;a=a*(M-i+2)%m;}std::cout<<a*d[N]%m;}
      |                                                                                                                                                        ^~~~
a.cc:3:152: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
Language: Java


import java.io.PrintStream;
import java.lang.reflect.Array;
import java.util.*;

public class Atcoder172 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        PrintStream printStream = new PrintStream(System.out);
        new ProblemE().solve(scanner, printStream);
    }

    static class Utils {
        public static int[] readIntArray(Scanner scanner, int n) {
            int[] res = new int[n];
            for (int i = 0; i < n; i++) {
                res[i] = scanner.nextInt();
            }
            return res;
        }

        public static void println(PrintStream printStream, List<Integer> a) {
            for (int x : a) {
                printStream.print(x + " ");
            }
            printStream.println();
        }

        public static void println(PrintStream printStream, int[] a) {
            for (int x : a) {
                printStream.print(x + " ");
            }
            printStream.println();
        }
    }

    static class ProblemE {

        long qpow(long a, long b, long mod) {
            long res = 1;
            while (b != 0) {
                if (b % 2 == 1) {
                    res = res * a % mod;
                }
                a = a * a % mod;
                b >>= 1;
            }
            return res;
        }

        long mul(long mod, long... arr) {
            long res = 1;
            for (long x : arr) {
                res = res * x % mod;
            }
            return res;
        }

        void solve(Scanner scanner, PrintStream printStream) {
            final long mod = (long) (1e9 + 7);
            int n = scanner.nextInt();
            int m = scanner.nextInt();
            long[] fac = new long[(m + 10)];

            fac[0] = 1;
            for (int i = 1; i <= m; i++) {
                fac[i] = fac[i - 1] * i % mod;
            }

            long[] d = new long[(m + 10)];
            d[0] = 1;
            d[1] = 0;
            d[2] = 1;
            for (int i = 3; i <= m; i++) {
                d[i] = (i - 1) * (d[i - 1] + d[i - 2]) % mod;
            }


            long[] inv = new long[m + 1];
            inv[m] = qpow(fac[m], mod - 2, mod);
            for (int i = m - 1; i >= 0; i--) {
                inv[i] = inv[i + 1] * (i + 1) % mod;
            }

            long ans = 0;
            for (int i = 0; i <= m - n; i++) {
                ans += mul(mod, d[m - i], inv[m - n - i], inv[i]);
                ans %= mod;
            }
            printStream.println(ans * fac[m] % mod * inv[m - n] % mod);
        }
    }
}


Compiler output:
Main.java:6: error: class Atcoder172 is public, should be declared in a file named Atcoder172.java
public class Atcoder172 {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
#include <cstdlib>
#include <cmath>
#include <algorithm>
using namespace std;
using ll = long long;
using P = pair<int,int>;
using Graph= vector<vector<int>>; 
#define rep(i,n) for (ll i=0; i < (n); ++i)
#define rep2(i,n,m) for(ll i=n;i<=m;i++)
#define rep3(i,n,m) for(ll i=n;i>=m;i--)
#define pb push_back
#define eb emplace_back
#define ppb pop_back
#define mpa make_pair
const ll INF=1e18 ;
inline void chmax(ll& a,ll b){a=max(a,b);}
inline void chmin(ll& a,ll b){a=min(a,b);}

int main(){
  ll n ; cin>>n ;
  vector<ll> A(n) ;rep(i,n) cin>>A[i] ;
  ll sum=0 ;
  rep2(i,2,n-1){
    sum = sum^A[i] ;
  }
  
  ll wa= A[0]+A[1] ;
  
  ll sa = (wa-sum)/2 ;
    //cout<<sa<<endl ;
  if((wa-sum)%2!=0 || sa>A[0]||sa<0) cout<<-1 <<endl ;
 else{
   if(A[1]<sa){
      cout<<sa-A[1]<<endl ;
      return 0 ;
   }
   cout<<sa^A[1]-A[1]<<endl ;
  }
  
 
     return 0;
  }
  

Compiler output:
a.cc: In function 'int main()':
a.cc:38:22: error: invalid operands of types '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} and '<unresolved overloaded function type>' to binary 'operator<<'
   38 |    cout<<sa^A[1]-A[1]<<endl ;
Language: C++

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

const int mod = 1000000007;
const int mod = 998244353;
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 { return mint(*this) += a;}
  mint operator-(const mint a) const { return mint(*this) -= a;}
  mint operator*(const mint a) const { return mint(*this) *= 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 { return mint(*this) /= a;}
};
istream& operator>>(istream& is, const mint& a) { return is >> a.x;}
ostream& operator<<(ostream& os, const mint& a) { return os << a.x;}

int main() {
  int n, m;
  cin >> n >> m;

  mint ans = 1;
  for(int i=m;i>=n;i--) {
    ans *= m;
  }
  ans *= ans;
  ans /= 2;

  cout << ans << endl;
  return 0;
}


Compiler output:
a.cc:8:11: error: redefinition of 'const int mod'
    8 | const int mod = 998244353;
      |           ^~~
a.cc:7:11: note: 'const int mod' previously defined here
    7 | const int mod = 1000000007;
      |           ^~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0; i<n; i++)
#define REP(i,m,n) for(ll i=(ll)(m);i<(ll)(n);i++)
long long mo = 1e9 + 7;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> Pii;
typedef pair<ll,ll> Pll;
template<class T, class S> void cmin(T &a, const S &b) { if (a > b)a = b; }
template<class T, class S> void cmax(T &a, const S &b) { if (a < b)a = b; }
template<class A>void PR(A a,ll n){rep(i,n){if(i)cout<<' ';cout<<a[i];}cout << "\n";}
ld PI=3.14159265358979323846;

const int mod = 1000000007;
class mint {
    long long x;
public:
    mint(long long 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;
    }
 
    friend ostream& operator<<(ostream& os, const mint& m){
        os << m.x;
        return os;
    }
};

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];
  }
} comb(600010);

int main(){
    ll N,M;
    cin >> N >> M;
    mint sum = 1;
    ll cur = M;
    rep(i,N){
        sum *= cur;
        cur--;
    }
    mint sum2 = sum/M;
    mint ans = sum*sum;
    mint cur2 = M-N+1;
    //mint tmp = 0;
    rep(i,N){
        ans = comb(N,N-i)*sum;
        //cout << "a; " <<ans << endl;
        sum /= cur2;
        cur2 += 1;
    }
    cur2 = M;
    rep(i,N-1){
        ans -= comb(N,i)*sum;
        sum*=cur2;
        cur2--;
    }
//    cout << sum << endl;
//    cout << sum2 << endl;
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:110:13: error: no 'operator--(int)' declared for postfix '--' [-fpermissive]
  110 |         cur2--;
      |         ~~~~^~
Language: C++

#include<algorithm>
#include<iostream>
#include<cstring>
#include<iomanip>
#include<sstream>
#include<cstdio>
#include<string>
#include<vector>
#include<bitset>
#include<queue>
#include<cmath>
#include<stack>
#include<set>
#include<map>
#define rep(i,x,n) for(int i=x;i<=n;i++)
#define per(i,n,x) for(int i=n;i>=x;i--)
#define sz(a) int(a.size())
#define rson mid+1,r,p<<1|1
#define pii pair<int,int>
#define lson l,mid,p<<1
#define ll long long
#define pb push_back
#define mp make_pair
#define se second
#define fi first
using namespace std;
const double eps=1e-8;
const int mod=1e9+7;
const int N=5e5+10;
const int inf=1e9;
int n,m;
ll f[N],inv[N];
ll ksm(ll a,ll b){
	ll ret=1;
	while(b){
		if(b&1) ret=ret*a%mod;
		a=a*a%mod;
		b>>=1;
	}
	return ret;
}
ll cal(int x){
	return f[m]*inv[m-x]%mod;
}
ll cal1(int y,int x){
	return f[m-y]*inv[m-x-y]%mod*f[m-y]%mod*inv[m-x-y]%mod;
}
ll C(ll n,ll m){
	return f[n]*inv[n-m]%mod*inv[m]%mod;
}
int main(){
	//ios::sync_with_stdio(false);
	//freopen("in","r",stdin);
	f[0]=1;
	rep(i,1,N-1) f[i]=f[i-1]*i%mod;
	inv[N-1]=ksm(f[N-1],mod-2);
	for(int i=N-2;i>=0;--i) inv[i]=inv[i+1]*(i+1)%mod;
	cin>>n>>m;
	if(m<n){
		cout<<0<<endl;
		return 0;
	}
	int o=1;
	ll ans=0;
	rep(i,0,n){
		if(o) ans=(ans+1ll*C(n,i)*f[m-n-i]%mod*inv[m-n]%mod)%mod;
		else ans=(ans-1ll*C(n,i)*f[m-n-i]%mod*inv[m-n]%mod)%mod;
	}
	ans=(ans*f[m]%mod*inv[m-n]%mod);
	ans=(ans%mod+mod)%mod;
	cout<<ans<<endl;
	//cout<<f[m]*inv[m-n]%mod*f[m-1]%mod*inv[max(0,m-n-1)]%mod<<endl;
	return 0;
}
2*2*
/*36
3*2*2
3*2
2 1
m m-1 m-2
m-1 m-1 m-3
1 2
3 1

2*3*3

1 2


*/

Compiler output:
a.cc:75:1: error: expected unqualified-id before numeric constant
   75 | 2*2*
      | ^
Language: C++

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

ll modpower(ll a, ll r, ll mod){ //a^r
    ll x = 1;
    a %= mod;
    while (r > 0) {
        if (r & 1) x = x * a % mod;
        r >>= 1;
        a = a * a % mod;
    }
    return x;
}

ll modinv(ll a, ll mod){
    return modpower(a, mod-2, mod);
}

vector<ll> fact;
vector<ll> invfact;

void set_fact(ll n, ll mod){
    fact.resize(n+1, 1);
    invfact.resize(n+1, 1);
    for (ll i = 2; i <= n; i++) {
        fact[i] = fact[i-1] * i % mod;
    }
    invfact[n] = modinv(fact[n], mod);
    for (ll i = n-1; i >= 2; i--) {
        invfact[i] = invfact[i+1] * (i+1) % mod;
    }
    return;
}

ll comb(ll n, ll k, ll mod) {
    if (k > n || k < 0) return 0;
    if (k == n || k == 0) return 1;
    return fact[n] * invfact[n-k] % mod * invfact[k] % mod;
}

int main(){
    ll N, M;
    cin >> N >> M;
    ll mod = 1e9+7;
    set_fact(N+M+10);
    if (M < N) {
        cout << 0 << endl;
        return 0;
    }
    vector<ll> dp(N+2, 0);
    ll base = fact[M] * invfact[M-N] % mod;
    dp[N] = M-N;
    dp[N+1] = 1;
    for (ll i = N-1; i >= 1; i--) {
        dp[i] = (M-N)*dp[i+1] + (N-i) * dp[i+1] + (N-i)*dp[i+2];
        dp[i] %= mod;
    }
    cout << base * dp[1] % mod << endl;
    
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:46:13: error: too few arguments to function 'void set_fact(long long int, long long int)'
   46 |     set_fact(N+M+10);
      |     ~~~~~~~~^~~~~~~~
a.cc:23:6: note: declared here
   23 | void set_fact(ll n, ll mod){
      |      ^~~~~~~~
Language: Java

import java.util.ArrayList;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Scanner;

public class Main {
  public static void main(String[] args) {

    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int m = sc.nextInt();

    long result = 1;
    for(int i = 0; i < n; i++){
      result = result * (m - i);
      result = result % 1000000007;
    }

          result = result * (m - i - 1);
      result = result % 1000000007;
    
    for(int i=0; i<n-1; i++){
      result = result * (m - i - 1);
      result = result % 1000000007;
    }

    System.out.println(result);

  }
}

Compiler output:
Main.java:19: error: cannot find symbol
          result = result * (m - i - 1);
                                 ^
  symbol:   variable i
  location: class Main
1 error
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include <cstdlib>
#include<cctype>
#include <algorithm>    
using namespace std;
typedef long long ll;
#define REP(i,n) for(ll i=0;i<(ll)(n);i++)
#define REPD(i,n) for(ll i=n-1;i>=0;i--)
#define FOR(i,a,b) for(ll i=a;i<=(ll)(b);i++)
#define FORD(i,a,b) for(ll i=a;i>=(ll)(b);i--)
#define VCOUT(num) for(auto& num:vec)
#define GET_ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
#define LLINF 1000000000000000000//10^18
#define INF 1000000000000 //10^12
#define MOD 1000000007 //10^9+7:合同式の法
#define MAXR 100000
#define MAX 100
#define MX 10

//int main(int argc, char const* argv[]){

int main(){ 
    vector<int>vec;
     vector<char>cvec;
      vector<string>svec;
    
   long int a,b,x[MAXR],y[MAXR],z,count=0;
   string str1,str2;
   char c;
 
   cin>>a;
   cin>>b;
   REP(i,a){
       x[i]=i;
       y[i]=i;
      if(x[i]!=y[i]){
          REP(j,a){
              if(x[j]!=x[i]){
                REP(u,a)y[u]!=y[i]count++;
          }
      }
   }
   }
   
    
  //std::sort(vec.begin(),vec.end());
  //for(auto& num:vec)cout<<num<<endl;
  //auto answer=;
  cout<<count<<endl;
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:41:35: error: expected ';' before 'count'
   41 |                 REP(u,a)y[u]!=y[i]count++;
      |                                   ^~~~~
      |                                   ;
Language: C++

///spaesk

#include <iostream>
#include <iomanip>
#include <cassert>
#include <cmath>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#include <complex>
#include <map>
#include<unordered_map>
#include <set>
#include <queue>
#include <stack>
#include <vector>
#include<bitset>
#include<deque>
#include<string>
#include<list>
#include<iterator>
#include<sstream>
#include <algorithm>
#include <numeric>
#include <math.h>

#define pi acos(-1)
#define int long long int
#define ld long double
#define ar array
#define ff first
#define ss second
#define lower(a) transform(a.begin(),a.end(),a.begin(),::tolower);

using namespace std;

typedef vector<vector<int> > matrix ;

const int N = 3e5 + 500;
const long long mod = 1e9 + 7;
const long long cmod = 998244353 ;
const long long inf = 1LL << 61;
const int M = 1e6 + 500;
const int ths = 1LL << 40;
const int NN = 5e3 + 6;

const int maxN = 1003;

///
///

int n, m;
vector<vector<int>> cache;

int dp(int a, int b) {

    if(a < 0 or b < 0)
        return 0;

    if(a + b == m - n) {
        return 1;

    if(a + b < m - n)
        return 0;

    int &ans = cache[a][b];
    if(ans != -1)
        return ans ;

    ans = min(a, n - 1) * dp(a - 1, b) + b * dp(a, b - 1);
    ans %= mod;

    return ans ;

}

void solve()
{

    cin>>n>>m;
    cache.clear();
    cache.resize(n + 2, vector<int> (m - n + 2, -1));
    for (int i = 0; i <= n; i ++) {
        for(int j = 0; j <= m - n + 1; j ++)
            cache[i][j] = -1;
    }
    int ans = dp(n, m - n);
    for(int i = m; i > m - n; i --) {
        ans = (ans * i) % mod;
    }
    cout<<ans;
    cout<<"\n";
    return ;
}

/*
*/

int32_t main()
{
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);

    int t = 1;
//    cin>>t;
    while(t --)
    {
        solve();
    }
    return 0;
}


Compiler output:
a.cc: In function 'long long int dp(long long int, long long int)':
a.cc:78:1: error: a function-definition is not allowed here before '{' token
   78 | {
      | ^
a.cc:99:13: warning: empty parentheses were disambiguated as a function declaration [-Wvexing-parse]
   99 | int32_t main()
      |             ^~
a.cc:99:13: note: remove parentheses to default-initialize a variable
   99 | int32_t main()
      |             ^~
      |             --
a.cc:99:13: note: or replace parentheses with braces to value-initialize a variable
a.cc:100:1: error: a function-definition is not allowed here before '{' token
  100 | {
      | ^
a.cc:110:2: error: expected '}' at end of input
  110 | }
      |  ^
a.cc:55:22: note: to match this '{'
   55 | int dp(int a, int b) {
      |                      ^
a.cc:110:2: warning: control reaches end of non-void function [-Wreturn-type]
  110 | }
      |  ^
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <set>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <algorithm>
#include <iomanip>
#include <math.h>
#include <string.h>
#include <cstdio>
#include <tuple>
#include <numeric>
#include <time.h>
#include <chrono>
#define FOR(i,a,b) for(ll i=a;i<b;i++)
#define REP(i,a,b) for(ll i=a;i>b;i--)
#define CST(x) cout<<fixed<<setprecision(x)//小数点以下の桁数指定
#define ct(a) cout<<a<<endl
#define rep(i,n) for(int i=0;i<(n);i++)
#define repl(i,l,r) for(int i=(1);i<(r);i++)
#define per(i, n) for(int i = ((n)-1); i >= 0; i--)
static const double pi = 3.141592653589793;
using namespace std;
typedef long long ll;
const ll MOD = 998244353;
const ll INF = 1e9 + 7;
const ll mod = 1e9 + 7;

ll N, M;
ll kakuran[500001];

vector<ll> k(500001);//kの階乗
vector<ll> f(500001);//kの逆元
// nCk = k[n]*f[n-k]*f[k]

ll mod_pow(ll x, ll n) {
	if (n == 0) return 1;
	ll res = mod_pow(x*x % mod, n / 2);
	if (n & 1) res = res * x % mod;
	return res;
}

void comb_init(void) {
	ll cur = 1;
	k[0] = f[0] = 1;
	FOR(i, 1, 500001) {
		cur = (cur * i) % mod;
		k[i] = cur;
		f[i] = mod_pow(cur, mod - 2);
	}
}

ll combination(ll n, ll s) {
	ll ret = (((k[n] * f[n - s]) % mod) * f[s]) % mod;
	return ret;
}


int main() {


	cin.tie(0);
	cout.tie(0);
	ios::sync_with_stdio(false);
	comb_init();

	kakuran[1] = 1; kakuran[2] = 2;

	FOR(i, 3, 500001) {
		kakuran[i] = (i - 1)*(kakuran[i - 1] + kakuran[i - 2])%mod;
	}
	cin >> N >> M;
	ll kumi = combination(M, N);
	kumi = kumi * kumi%mod;
	kumi = kumi * kakuran[N] % mod;
	cout << kumi*%mod << endl;

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:79:22: error: expected primary-expression before '%' token
   79 |         cout << kumi*%mod << endl;
      |                      ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
long int f(long int n){
  long int d=(pow(10,9)+7)
  return n%d;
}
long int a(int m,int n){
  long int v=m;
  for(int i=1;i<=n;i++){
    v*=f((m-1)*(m-1));
    v=f(v);
  }
  return v;
}
int main(){
  int n,m;
  cin>>n>>m;
  cout<<a(m,n)<<endl;
}


Compiler output:
a.cc: In function 'long int f(long int)':
a.cc:5:3: error: expected ',' or ';' before 'return'
    5 |   return n%d;
      |   ^~~~~~
a.cc:6:1: warning: no return statement in function returning non-void [-Wreturn-type]
    6 | }
      | ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
long int f(long int n){
  return n%(pow(10,9)+7);
}
long int a(int m,int n){
  long int v=m;
  for(int i=1;i<=n;i++){
    v*=f((m-1)*(m-1));
    v=f(v);
  }
  return v;
}
int main(){
  int n,m;
  cin>>n>>m;
  cout<<a(m,n)<<endl;
}


Compiler output:
a.cc: In function 'long int f(long int)':
a.cc:4:11: error: invalid operands of types 'long int' and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
    4 |   return n%(pow(10,9)+7);
      |          ~^~~~~~~~~~~~~~
      |          |           |
      |          long int    __gnu_cxx::__promote<double>::__type {aka double}
Language: C++

#include<bits/stdc++.h>
using namespace std;
long int f(long int n){
  return n%(pow(10,9)+7);
}
long int a(int m,int n){
  long int v=m;
  for(int i=1,i<=n;i++){
    v*=f((m-1)*(m-1));
    v=f(v);
  }
  return v;
}
int main(){
  int n,m;
  cin>>n>>m;
  cout<<a(m,n)<<endl;
}

Compiler output:
a.cc: In function 'long int f(long int)':
a.cc:4:11: error: invalid operands of types 'long int' and '__gnu_cxx::__promote<double>::__type' {aka 'double'} to binary 'operator%'
    4 |   return n%(pow(10,9)+7);
      |          ~^~~~~~~~~~~~~~
      |          |           |
      |          long int    __gnu_cxx::__promote<double>::__type {aka double}
a.cc: In function 'long int a(int, int)':
a.cc:8:16: error: expected ';' before '<=' token
    8 |   for(int i=1,i<=n;i++){
      |                ^~
      |                ;
a.cc:8:16: error: expected primary-expression before '<=' token
    8 |   for(int i=1,i<=n;i++){
      |                ^~
Language: Java

import java.math.BigInteger;
import java.util.Scanner;
public class Main {
    static public void main(String[]args){
        Scanner sc = new Scanner(System.in);
        long x1 = 0, y1 = 0, x2 = sc.nextLong() + 1, y2 = sc.nextLong() + 1;
        BigInteger ans = f(x2, y2);
        ans = ans.subtract(f(x1 - 1, y2));
        ans = ans.subtract(f(x2, y1 - 1));
        ans = ans.add(f(x1 - 1, y1 - 1));
        Long = ans.longValue();
        Long mo = 1000000007;
        while (ans >= mo)
              ans -= mo;
        System.out.println(ans);
    }
    static BigInteger f(long x, long y){
        long p = 1;
        for(int i = 0; i < 60; i ++)
            p *= 2L;
        BigInteger P = new BigInteger(p + "");
        BigInteger ans = new BigInteger("0");
        while(x > 0 && y > 0){
            if(y < x){
                long buf = x;
                x = y;
                y = buf;
            }
            if(y < p){
                P  = P.divide(new BigInteger("2"));
                p /= 2L;
                continue;
            }
            if(x < p) {
                BigInteger now = new BigInteger("" + x);
                now = now.multiply(P);
                long XX = y+y-p-1;
                now = now.multiply(new BigInteger(XX + ""));
                now = now.divide(new BigInteger("2"));
                ans = ans.add(now);
            }
            else{
                long g = x + y - p;
                BigInteger now = new BigInteger("" + g);
                now = now.multiply(P);
                long p3 = 3L * p - 1L;
                now = now.multiply(new BigInteger("" + p3));
                now = now.divide(new BigInteger("2"));
                BigInteger cur = P;
                cur = cur.multiply(P);
                cur = cur.multiply(P);
                now = now.subtract(cur);
                ans = ans.add(now);
                x -= p;
            }
            y -= p;
        }
        return ans;
    }
}

Compiler output:
Main.java:11: error: cannot find symbol
        Long = ans.longValue();
        ^
  symbol:   variable Long
  location: class Main
Main.java:12: error: incompatible types: int cannot be converted to Long
        Long mo = 1000000007;
                  ^
Main.java:13: error: bad operand types for binary operator '>='
        while (ans >= mo)
                   ^
  first type:  BigInteger
  second type: Long
Main.java:14: error: bad operand types for binary operator '-'
              ans -= mo;
                  ^
  first type:  BigInteger
  second type: Long
4 errors
Language: C++

#include <bits/stdc++.h>
#include "../lib/math/comb.hpp"

using namespace std;

#define SZ(x) (int)(x.size())
#define REP(i, n) for(int i=0;i<(n);++i)
#define FOR(i, a, b) for(int i=(a);i<(b);++i)
#define RREP(i, n) for(int i=(int)(n);i>=0;--i)
#define RFOR(i, a, b) for(int i=(int)(a);i>=(int)(b);--i)
#define ALL(a) (a).begin(),(a).end()
#define DUMP(x) cerr<<#x<<" = "<<(x)<<endl
#define DEBUG(x) cerr<<#x<<" = "<<(x)<<" (L"<<__LINE__<<")"<< endl;

using ll = long long;
using vi = vector<int>;
using vvi = vector<vi>;
using vll = vector<ll>;
using vvll = vector<vll>;
using P = pair<int, int>;

const double eps = 1e-8;
const ll MOD = 1000000007;
const int INF = INT_MAX / 2;
const ll LINF = LLONG_MAX / 2;

template <typename T1, typename T2>
bool chmax(T1 &a, const T2 &b) {
  if(a < b) {a = b; return true;}
  return false;
}

template <typename T1, typename T2>
bool chmin(T1 &a, const T2 &b) {
  if(a > b) {a = b; return true;}
  return false;
}

template<typename T1, typename T2>
ostream& operator<<(ostream &os, const pair<T1, T2> p) {
  os << p.first << ":" << p.second;
  return os;
}

template<class T>
ostream &operator<<(ostream &os, const vector<T> &v) {
  REP(i, SZ(v)) {
    if(i) os << " ";
    os << v[i];
  }
  return os;
}

vll perf;

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  cout << fixed << setprecision(10);

  int ma = 1000000;
  Combination<MOD> comb(ma);

  perf.resize(ma);
  perf[2] = 1;
  FOR(i, 3, ma) {
    perf[i] = (i-1) * ((perf[i-1] + perf[i-2]) % MOD) % MOD;
  }


  ll n, m; cin >> n >> m;
  ll ans = comb.P(m, n);
  ll su = 0;
  ll sig = 1;
  REP(i, n+1) {
    ll tmp = comb.C(n, i);
    tmp *= (sig + MOD) % MOD;
    tmp %= MOD;
    sig = -sig;
    tmp *= comb.C(m-i, n-i);
    tmp %= MOD;
    tmp *= comb.getfact(n-i);
    tmp %= MOD;
    su += tmp;
    su %= MOD;
  }
  ans *= su;
  ans %= MOD;

  cout << ans << endl;
}








Compiler output:
a.cc:2:10: fatal error: ../lib/math/comb.hpp: No such file or directory
    2 | #include "../lib/math/comb.hpp"
      |          ^~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<iostream>
#include<cmath>
#include<algorithm>
#include<string>
#include<vector>
#include<stack>
#include<queue>
#include<set>
#include<map>
#include<iomanip>
#include<bitset>
using namespace std;
typedef long long ll;
typedef pair<ll,ll> P;
typedef pair<ll,P> P1;
typedef pair<P,P> P2;
#define pu push
#define pb push_back
#define mp make_pair
#define eps 1e-7
#define INF 1000000000
#define fi first
#define sc second
#define rep(i,x) for(ll i=0;i<x;i++)
#define repn(i,x) for(ll i=1;i<=x;i++)
#define SORT(x) sort(x.begin(),x.end())
#define ERASE(x) x.erase(unique(x.begin(),x.end()),x.end())
#define POSL(x,v) (lower_bound(x.begin(),x.end(),v)-x.begin())
#define POSU(x,v) (upper_bound(x.begin(),x.end(),v)-x.begin())

const int MAX = 510000;

// a^n MOD を計算する
long long modpow(long long a, long long n) {
    long long res = 1;
    while (n > 0) {
        if (n & 1) res = res * a;
        a = a * a;
        n >>= 1;
    }
    return res;
}

int main(){
  ll N; cin >> N;
  vector<ll> a(N); rep(i,N) cin >> a[i];

  ll s = 0, x = 0;
  s = a[0] + a[1];
  for(ll i = 2; i < N; i++){
    x ^= a[i];
  }

  ll d = s - x;
  if(d < 0 or d % 2 == 1) cout << -1 << endl;
  else{
    d /= 2;
    // 関係ないところで消さなきゃいけない
    if((d & x) != 0) cout << -1 << endl;
    else{
      bitset<50> bs(x);
      // maxの値はxの中からa[0] - dの値
      cout << ans << endl;
      for(ll i = 49 ; i >= 0; i--){
        if(bs.test(i) and ans > modpow(2, i)){
          ans -= modpow(2, i);
        }
      }
      if(ans == a[0] or ans < 0) cout << -1 << endl;
      else cout << ans << endl;
    }
  }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:63:15: error: 'ans' was not declared in this scope; did you mean 'abs'?
   63 |       cout << ans << endl;
      |               ^~~
      |               abs
Language: C++

import sys
n = eval(input())
s = input()
l = s.split()
x = eval(l[0])
y = eval(l[1])
a = x ^ y
for i in l:
    tmp = eval(i)
    a = a ^ tmp
if x + y < a or x + y - a & 1:
    print(-1)
    sys.exit(0)
t = x + y - a >> 1
if t & a or t > x:
    print(-1)
    sys.exit(0)
for i in range(62, -1, -1):
    if a >> i & 1 and t | 1 << i <= x:
        t |= 1 << i
if t:
    print(x - t)
else:
    print(-1)



Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import sys
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
Language: C++

#include "bits/stdc++.h"
using namespace std;
#define int long long
#define REP(i, n) for (int i = 0; i < (int)n; ++i)
#define RREP(i, n) for (int i = (int)n - 1; i >= 0; --i)
#define FOR(i, s, n) for (int i = s; i < (int)n; ++i)
#define RFOR(i, s, n) for (int i = (int)n - 1; i >= s; --i)
#define ALL(a) a.begin(), a.end()
#define IN(a, x, b) (a <= x && x < b)
template<class T>istream&operator >>(istream&is,vector<T>&vec){for(T&x:vec)is>>x;return is;}
template<class T>inline void out(T t){cout << t << "\n";}
template<class T,class... Ts>inline void out(T t,Ts... ts){cout << t << " ";out(ts...);}
template<class T>inline bool CHMIN(T&a,T b){if(a > b){a = b;return true;}return false;}
template<class T>inline bool CHMAX(T&a,T b){if(a < b){a = b;return true;}return false;}
constexpr int INF = 1e18;

void fin() {
	out(-1);
	exit(EXIT_SUCCESS);
}

signed main(){
	int N;
	cin >> N;
	vector<int>a(N);
	cin >> a;
	int S = a[0] + a[1];
	int X = accumulate(a.begin() + 2, a.end(), 0ll, [](int a, int b){return a ^ b;});
	if(S - X < 0) fin();
	int D = (S - X) / 2;
	if(D > a[0]) fin();
	int ans = D;
	int husoku = D - a[1];
	if(husoku > 0) {
		a[0] -= husoku;
		a[1] += husoku;
	} else husoku = 0;
	RREP(i, 55) {
		if(D & (1ll << i)) continue;
		if(!(X & (1ll << i))) continue;
		int tmp = ans ^ (1ll << i);
		if(tmp <= a[0]) ans = tmp;
	
	out(D, ans, husoku);
	if(ans == 0) fin();
	out(a[0] + husoku - ans);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:47:2: error: expected '}' at end of input
   47 | }
      |  ^
a.cc:22:14: note: to match this '{'
   22 | signed main(){
      |              ^
Language: C

// Unfair NIM  Longqiang 2020-07-27
#include <iostream>
using namespace std;

typedef long long LL;

LL n, arr[305];

int main(){
	cin>>n;
	for(int i=1; i<=n; i++) cin>>arr[i];
	
	int x = 0;
	for(int i=3; i<=n; i++) x ^= arr[i];
	
	//存在这样的等式： arr[1]+arr[2] = arr[1]^arr[2] + 2*arr[1]&arr[2]
	//可以这样认为：两个数相加，可以分解为两部分，一部分是不带进位的相加（异或），另一部分是负责进位
	LL sum = arr[1] + arr[2];
	LL first_part = x;
	LL second_part = sum - x;
	
	if(second_part%2){ //如果第二部分是奇数，那就不可能存在方案
		cout<<"-1";
		return 0;
	}
	
	//设最后 第一堆数量为a，第二堆为b, 则必须满足如下几个条件：
	//1. a&b的结果必须是second_part/2
	//2. a^b = first_part
	//3. 0<a<=a[1]
	// a=b=second_part/2 能满足前两个条件，我们要寻找出所有可能值中最大的a,
	// 将first_part中数位上为1的这些数值按贪心策略相应地分配到a或b中，即可得出答案
	LL a_and_b = second_part/2;
	LL a = a_and_b;
	LL b = a_and_b;
	
	for(int i=60; i>=0; i--){ //从最高位开始取
		if(first_part & (1ll<<i)){
			if(a_and_b & (1ll<<i)) { //这两者的同一个数位上不应该同时为1,否则不存在方案
				cout<<"-1";
				return 0;
			}
			if(a + (1ll<<i) <= arr[1]) a += (1ll<<i); //贪心策略,应让a尽可能大
			else b+=(1ll<<i);
		}
	}

	cout<<arr[1] - a;

	
	return 0;
}

Compiler output:
main.c:2:10: fatal error: iostream: No such file or directory
    2 | #include <iostream>
      |          ^~~~~~~~~~
compilation terminated.
Language: C

// Unfair NIM  Longqiang 2020-07-27
#include <bits/stdc++.h>
using namespace std;

typedef long long LL;

LL n, arr[305];

int main(){
	cin>>n;
	for(int i=1; i<=n; i++) cin>>arr[i];
	
	int x = 0;
	for(int i=3; i<=n; i++) x ^= arr[i];
	
	//存在这样的等式： arr[1]+arr[2] = arr[1]^arr[2] + 2*arr[1]&arr[2]
	//可以这样认为：两个数相加，可以分解为两部分，一部分是不带进位的相加（异或），另一部分是负责进位
	LL sum = arr[1] + arr[2];
	LL first_part = x;
	LL second_part = sum - x;
	
	if(second_part%2){ //如果第二部分是奇数，那就不可能存在方案
		cout<<"-1";
		return 0;
	}
	
	//设最后 第一堆数量为a，第二堆为b, 则必须满足如下几个条件：
	//1. a&b的结果必须是second_part/2
	//2. a^b = first_part
	//3. 0<a<=a[1]
	// a=b=second_part/2 能满足前两个条件，我们要寻找出所有可能值中最大的a,
	// 将first_part中数位上为1的这些数值按贪心策略相应地分配到a或b中，即可得出答案
	LL a_and_b = second_part/2;
	LL a = a_and_b;
	LL b = a_and_b;
	
	for(int i=60; i>=0; i--){ //从最高位开始取
		if(first_part & (1ll<<i)){
			if(a_and_b & (1ll<<i)) { //这两者的同一个数位上不应该同时为1,否则不存在方案
				cout<<"-1";
				return 0;
			}
			if(a + (1ll<<i) <= arr[1]) a += (1ll<<i); //贪心策略,应让a尽可能大
			else b+=(1ll<<i);
		}
	}

	cout<<arr[1] - a;

	
	return 0;
}

Compiler output:
main.c:2:10: fatal error: bits/stdc++.h: No such file or directory
    2 | #include <bits/stdc++.h>
      |          ^~~~~~~~~~~~~~~
compilation terminated.
Language: C

#define _CRT_SECURE_NO_WARNINGS 1
#include <vector>
#include <map>
#include <set>
#include <bitset>
#include <algorithm>
#include <numeric>
#include <sstream>
#include <iostream>
#include <cmath>
#include<cstring>
#include <cstdio>
#include <stack>
#include<iomanip>
#include<queue>
#include<functional>
#include<iterator>
#include<new>
#include<cstdlib>
using namespace std;
#define INF 2000000000
#define scll(x) scanf("%lld",&x);
#define sci(x)  scanf("%d",&x);
#define scc(x)  scanf("%c", &c);
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<long long, long long> pll;

int main()
{
	long long n;
	long long a, b, c = 0;
	cin >> n;
	cin >> a >> b;
	for (int i = 0; i < n - 2; i++) {
		long long x;
		cin >> x;
		c ^= x;
	}

	long long sum = a + b;
	long long xor = c;
	long long and = (sum - xor) / 2;
	if ((sum - xor) % 2 != 0) {
		cout << -1 << endl;
		return 0;
	}

	long long newA = and;
	long long newB = and;
	long long y = 1LL << 60;

	while (y > 0) {
		if ((newA ^ (y & xor)) <= a && (y & xor) > 0) {
			newA ^= (y & xor);
		}
		y >>= 1;
	}

	if (newA > a || newA == 0) {
		cout << -1 << endl;
	}
	else {
		cout << a - newA << endl;
	}




	return 0;
}

Compiler output:
main.c:2:10: fatal error: vector: No such file or directory
    2 | #include <vector>
      |          ^~~~~~~~
compilation terminated.
Language: C++

#define _CRT_SECURE_NO_WARNINGS 1
#include <vector>
#include <map>
#include <set>
#include <bitset>
#include <algorithm>
#include <numeric>
#include <sstream>
#include <iostream>
#include <cmath>
#include<cstring>
#include <cstdio>
#include <stack>
#include<iomanip>
#include<queue>
#include<functional>
#include<iterator>
#include<new>
#include<cstdlib>
using namespace std;
#define INF 2000000000
#define scll(x) scanf("%lld",&x);
#define sci(x)  scanf("%d",&x);
#define scc(x)  scanf("%c", &c);
typedef long long ll;
typedef pair<int, int> pi;
typedef pair<long long, long long> pll;

int main()
{
	long long n;
	long long a, b, c = 0;
	cin >> n;
	cin >> a >> b;
	for (int i = 0; i < n - 2; i++) {
		long long x;
		cin >> x;
		c ^= x;
	}

	long long sum = a + b;
	long long xor = c;
	long long and = (sum - xor) / 2;
	if ((sum - xor) % 2 != 0) {
		cout << -1 << endl;
		return 0;
	}

	long long newA = and;
	long long newB = and;
	long long y = 1LL << 60;

	while (y > 0) {
		if ((newA ^ (y & xor)) <= a && (y & xor) > 0) {
			newA ^= (y & xor);
		}
		y >>= 1;
	}

	if (newA > a || newA == 0) {
		cout << -1 << endl;
	}
	else {
		cout << a - newA << endl;
	}




	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:42:19: error: expected unqualified-id before 'xor' token
   42 |         long long xor = c;
      |                   ^~~
a.cc:43:23: error: expected unqualified-id before '=' token
   43 |         long long and = (sum - xor) / 2;
      |                       ^
a.cc:44:20: error: expected primary-expression before 'xor' token
   44 |         if ((sum - xor) % 2 != 0) {
      |                    ^~~
a.cc:44:23: error: expected primary-expression before ')' token
   44 |         if ((sum - xor) % 2 != 0) {
      |                       ^
a.cc:49:29: error: expected identifier before ';' token
   49 |         long long newA = and;
      |                             ^
a.cc:50:29: error: expected identifier before ';' token
   50 |         long long newB = and;
      |                             ^
a.cc:54:34: error: expected primary-expression before 'xor' token
   54 |                 if ((newA ^ (y & xor)) <= a && (y & xor) > 0) {
      |                                  ^~~
a.cc:54:37: error: expected primary-expression before ')' token
   54 |                 if ((newA ^ (y & xor)) <= a && (y & xor) > 0) {
      |                                     ^
a.cc:54:53: error: expected primary-expression before 'xor' token
   54 |                 if ((newA ^ (y & xor)) <= a && (y & xor) > 0) {
      |                                                     ^~~
a.cc:54:56: error: expected primary-expression before ')' token
   54 |                 if ((newA ^ (y & xor)) <= a && (y & xor) > 0) {
      |                                                        ^
a.cc:55:38: error: expected primary-expression before 'xor' token
   55 |                         newA ^= (y & xor);
      |                                      ^~~
a.cc:55:41: error: expected primary-expression before ')' token
   55 |                         newA ^= (y & xor);
      |                                         ^
Language: C++

ll a[305];
ll m, s;

int main() {
    int n;
    scanf("%d", &n);
    for (int i = 0; i < n; i++) scanf("%lld", a + i);
    m = a[2];
    for (int i = 3; i < n; i++) m ^= a[i];
    s = a[0] + a[1];
    ll rem = s - m;
    if ((rem % 2) || (rem < 0)) {
        puts("-1");
        return 0;
    }
    rem /= 2;
    ll b = rem;
    int f = 1;
    for (ll i = 50; i >= 0; i--) {
        ll p = 1ll << i;
        if ((m & p) && (rem & p)) f = 0;
        if ((m & p) && ((b + p) <= a[0])) b += p;
    }
    b = a[0] - b;
    if ((b >= a[0]) || (b < 0)) f = 0;
    if (f) printf("%lld", b);
    else puts("-1");
}

Compiler output:
a.cc:1:1: error: 'll' does not name a type
    1 | ll a[305];
      | ^~
a.cc:2:1: error: 'll' does not name a type
    2 | ll m, s;
      | ^~
a.cc: In function 'int main()':
a.cc:6:5: error: 'scanf' was not declared in this scope
    6 |     scanf("%d", &n);
      |     ^~~~~
a.cc:7:47: error: 'a' was not declared in this scope
    7 |     for (int i = 0; i < n; i++) scanf("%lld", a + i);
      |                                               ^
a.cc:8:5: error: 'm' was not declared in this scope
    8 |     m = a[2];
      |     ^
a.cc:8:9: error: 'a' was not declared in this scope
    8 |     m = a[2];
      |         ^
a.cc:10:5: error: 's' was not declared in this scope
   10 |     s = a[0] + a[1];
      |     ^
a.cc:11:5: error: 'll' was not declared in this scope
   11 |     ll rem = s - m;
      |     ^~
a.cc:12:10: error: 'rem' was not declared in this scope
   12 |     if ((rem % 2) || (rem < 0)) {
      |          ^~~
a.cc:13:9: error: 'puts' was not declared in this scope
   13 |         puts("-1");
      |         ^~~~
a.cc:16:5: error: 'rem' was not declared in this scope
   16 |     rem /= 2;
      |     ^~~
a.cc:17:7: error: expected ';' before 'b'
   17 |     ll b = rem;
      |       ^~
      |       ;
a.cc:19:12: error: expected ';' before 'i'
   19 |     for (ll i = 50; i >= 0; i--) {
      |            ^~
      |            ;
a.cc:19:21: error: 'i' was not declared in this scope
   19 |     for (ll i = 50; i >= 0; i--) {
      |                     ^
a.cc:20:11: error: expected ';' before 'p'
   20 |         ll p = 1ll << i;
      |           ^~
      |           ;
a.cc:21:18: error: 'p' was not declared in this scope
   21 |         if ((m & p) && (rem & p)) f = 0;
      |                  ^
a.cc:22:18: error: 'p' was not declared in this scope
   22 |         if ((m & p) && ((b + p) <= a[0])) b += p;
      |                  ^
a.cc:22:26: error: 'b' was not declared in this scope
   22 |         if ((m & p) && ((b + p) <= a[0])) b += p;
      |                          ^
a.cc:24:5: error: 'b' was not declared in this scope
   24 |     b = a[0] - b;
      |     ^
a.cc:26:12: error: 'printf' was not declared in this scope
   26 |     if (f) printf("%lld", b);
      |            ^~~~~~
a.cc:1:1: note: 'printf' is defined in header '<cstdio>'; this is probably fixable by adding '#include <cstdio>'
  +++ |+#include <cstdio>
    1 | ll a[305];
a.cc:27:10: error: 'puts' was not declared in this scope
   27 |     else puts("-1");
      |          ^~~~
Language: C++

#include <bits/stdc++.h>

#define forn(i, n) for (int i = 0; i < int(n); ++i)
#define for1(i, n) for (int i = 1; i <= int(n); ++i)
#define F first
#define S second
#define all(x) (x).begin(),(x).end()
#define sz(x) int(x.size())
#define pb push_back

using namespace std;
using ll=long long;
using pii= pair<int, int>;
mt19937 gen(chrono::steady_clock::now().time_since_epoch().count());
template<typename... T> void rd(T&... args) {((cin>>args), ...);}
template<typename... T> void wr(T... args) {((cout<<args<<" "), ...);cout<<endl;}

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin>>n;
    vector<ll> a(n);
    for(auto& it:a) cin>>it;
    ll XOR =0;
    for(int i=2;i<n;i++) XOR^=a[i];
    ll sum=a[0]+a[1];
    if((sum-XOR)&1) return cout<<-1,0;
    ll dif=(sum-XOR)/2;
    ll fi=0;
    vector<int> possible;
    for(int i=62;i>=0;i--){
        int x=XOR>>i&1,d=dif>>i&1;
        if(x==0&&d) fi^=(1LL<<i);
        else if(x&&d==0){
            possible.pb(i);
        }else if(x&&d){
            return cout<<-1,0;
        }
    }
    for(auto bit:possible){
        if((fi^(1LL<<bit))<=a[0]){
            fi^=(1LL<<bit);
        }
    }
    if(fi==0||fi>a[i]) cout<<-1;
    else cout<<a[0]-fi;
    return 0;
}



Compiler output:
a.cc: In function 'int main()':
a.cc:46:20: error: 'i' was not declared in this scope; did you mean 'fi'?
   46 |     if(fi==0||fi>a[i]) cout<<-1;
      |                    ^
      |                    fi
Language: C++

#include<iostream>
using namespace std;

int main(){
    int n,i,j,k;
    cin>>n;
    ll A,B,C=0;
    cin>>A>>B;
    for(i=3;i<=n;i++){
        long long t;
        cin>>t;
        C^=t;
    }
    ll D=A+B-C>>1;
    if(A+B-C & 1 || D<0 || D>A || D&C){
        cout<<"-1\n";
        return 0;
    }
    ll a=D;
    for(i=60;i>=0;i--){
        if(C>>i & 1 && D>>i&1^1&&(a|1ll<<i)<=A){
            a|=1ll<<i;
        }
    }
    if(a==0){
        cout<<"-1\n";
        return 0;
    }
    cout<<A-a<<endl;
 
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:5: error: 'll' was not declared in this scope
    7 |     ll A,B,C=0;
      |     ^~
a.cc:8:10: error: 'A' was not declared in this scope
    8 |     cin>>A>>B;
      |          ^
a.cc:8:13: error: 'B' was not declared in this scope
    8 |     cin>>A>>B;
      |             ^
a.cc:12:9: error: 'C' was not declared in this scope
   12 |         C^=t;
      |         ^
a.cc:14:7: error: expected ';' before 'D'
   14 |     ll D=A+B-C>>1;
      |       ^~
      |       ;
a.cc:15:12: error: 'C' was not declared in this scope
   15 |     if(A+B-C & 1 || D<0 || D>A || D&C){
      |            ^
a.cc:15:21: error: 'D' was not declared in this scope
   15 |     if(A+B-C & 1 || D<0 || D>A || D&C){
      |                     ^
a.cc:19:7: error: expected ';' before 'a'
   19 |     ll a=D;
      |       ^~
      |       ;
a.cc:21:12: error: 'C' was not declared in this scope
   21 |         if(C>>i & 1 && D>>i&1^1&&(a|1ll<<i)<=A){
      |            ^
a.cc:21:24: error: 'D' was not declared in this scope
   21 |         if(C>>i & 1 && D>>i&1^1&&(a|1ll<<i)<=A){
      |                        ^
a.cc:21:35: error: 'a' was not declared in this scope
   21 |         if(C>>i & 1 && D>>i&1^1&&(a|1ll<<i)<=A){
      |                                   ^
a.cc:25:8: error: 'a' was not declared in this scope
   25 |     if(a==0){
      |        ^
a.cc:29:13: error: 'a' was not declared in this scope
   29 |     cout<<A-a<<endl;
      |             ^