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

import java.io.*;
import java.util.*;
import java.lang.Math;

public class Main {

    static class FastScanner {
        BufferedReader br;
        StringTokenizer st;

        public FastScanner() {
            try {
                br = new BufferedReader(new InputStreamReader(System.in));
                st = new StringTokenizer(br.readLine());
            } catch (Exception e){e.printStackTrace();}
        }

        public String next() {
            if (st.hasMoreTokens()) return st.nextToken();
            try {st = new StringTokenizer(br.readLine());}
            catch (Exception e) {e.printStackTrace();}
            return st.nextToken();
        }

        public int nextInt() {return Integer.parseInt(next());}

        public long nextLong() {return Long.parseLong(next());}

        public double nextDouble() {return Double.parseDouble(next());}

        public String nextLine() {
            String line = "";
            if(st.hasMoreTokens()) line = st.nextToken();
            else try {return br.readLine();}catch(IOException e){e.printStackTrace();}
            while(st.hasMoreTokens()) line += " "+st.nextToken();
            return line;
        }
    }

    public static void main(String[] args) {
        FastScanner sc = new FastScanner();
        PrintWriter pw = new PrintWriter(System.out);

        long n = sc.nextLong() + sc.nextLong();
        if(n % 2 == 1) {
            pw.println("IMPOSSIBLE");
        }
        else pw.println(n / 2);

        pw.close();
    }
}


Compiler output:
a.cc:1:1: error: 'import' does not name a type
    1 | import java.io.*;
      | ^~~~~~
a.cc:1:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:2:1: error: 'import' does not name a type
    2 | import java.util.*;
      | ^~~~~~
a.cc:2:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:3:1: error: 'import' does not name a type
    3 | import java.lang.Math;
      | ^~~~~~
a.cc:3:1: note: C++20 'import' only available with '-fmodules-ts'
a.cc:5:1: error: expected unqualified-id before 'public'
    5 | public class Main {
      | ^~~~~~
Language: C++

#include<bits/stdc++.h>
using nameswpace std;
main()
{

    long long int a,b;
     cin>>a>>b;
    if(a==0 || b==0)
        cout<<"IMPOSSIBLE"<<endl;
     else
    cout<<(a+b)/2<<endl;



}


Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'nameswpace'
    2 | using nameswpace std;
      |       ^~~~~~~~~~
a.cc:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:7:6: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |      cin>>a>>b;
      |      ^~~
      |      std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:9:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |         cout<<"IMPOSSIBLE"<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:29: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    9 |         cout<<"IMPOSSIBLE"<<endl;
      |                             ^~~~
      |                             std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:11:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |     cout<<(a+b)/2<<endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:11:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |     cout<<(a+b)/2<<endl;
      |                    ^~~~
      |                    std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using nameswpace std;
main()
{
    
    long long int a,b;
     cin>>a>>b;
    if(a==0 || b==0)
        cout<<"IMPOSIABLE"<<endl;
     else 
    cout<<(a+b)/2<<endl;   
    
    
    
}


Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'nameswpace'
    2 | using nameswpace std;
      |       ^~~~~~~~~~
a.cc:3:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    3 | main()
      | ^~~~
a.cc: In function 'int main()':
a.cc:7:6: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |      cin>>a>>b;
      |      ^~~
      |      std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:9:9: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |         cout<<"IMPOSIABLE"<<endl;
      |         ^~~~
      |         std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:29: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    9 |         cout<<"IMPOSIABLE"<<endl;
      |                             ^~~~
      |                             std::endl
In file included from /usr/include/c++/14/istream:41,
                 from /usr/include/c++/14/sstream:40,
                 from /usr/include/c++/14/complex:45,
                 from /usr/include/c++/14/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:127:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:11:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   11 |     cout<<(a+b)/2<<endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:11:20: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   11 |     cout<<(a+b)/2<<endl;
      |                    ^~~~
      |                    std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: C++

static const ull MOD = 1000000007LL;

int n;
char s[100005];
uint64_t dp[100005][13];

uint64_t solve () {
	int i, j, ki;
	uint64_t res = 0;

	scanf("%s", s);
	n = strlen(s);

	dp[0][0] = 1;
	for (i = 0; i < n; i++) {
		int c;
		if (s[i] == '?') c = -1;
		else c = s[i] - '0';

		for (j = 0; j < 10; j++) {
			if (c != -1 && c != j) continue;
			for (ki = 0; ki < 13; ki++) {
				dp[i + 1][(ki * 10 + j) % 13] += dp[i][ki];
			}
		}
		for (j = 0; j < 13; j++) dp[i + 1][j] %= MOD;
	}
	res = dp[n][5];

	printf("%llu\n", res);
	return 0;
}


Compiler output:
a.cc:1:14: error: 'ull' does not name a type
    1 | static const ull MOD = 1000000007LL;
      |              ^~~
a.cc:5:1: error: 'uint64_t' does not name a type
    5 | uint64_t dp[100005][13];
      | ^~~~~~~~
a.cc:1:1: note: 'uint64_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
  +++ |+#include <cstdint>
    1 | static const ull MOD = 1000000007LL;
a.cc:7:1: error: 'uint64_t' does not name a type
    7 | uint64_t solve () {
      | ^~~~~~~~
a.cc:7:1: note: 'uint64_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
Language: C++

#include <iostream>
#include<cmath>
using namespace std;
int main(){
   int A,B;
   cin >>A>>B;
   int K=(A+B)/2;
   if(abs(A-K)==abs(B-K)){
      cout <<K<<endl;
   } 
   else {
      cout << "IMPOSSIBLE" << endl;
   }

Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: expected '}' at end of input
   13 |    }
      |     ^
a.cc:4:11: note: to match this '{'
    4 | int main(){
      |           ^
Language: C++

#include <bits/stdc++.h>
#define REP(i, n) for(int i = 0, i##_l = (n); i < i##_l; i++)
int dp[100001][13];
int main() {
    string s;cin >> s;dp[0][0] = 1;REP(i, s.size())REP(j, 13) REP(k, 10)if(s[i] == '?' || s[i] - '0' == k)(dp[i + 1][(j * 10 + k) % 13] += dp[i][j]) %= 1000000007;cout << dp[s.size()][5];return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:5: error: 'string' was not declared in this scope
    5 |     string s;cin >> s;dp[0][0] = 1;REP(i, s.size())REP(j, 13) REP(k, 10)if(s[i] == '?' || s[i] - '0' == k)(dp[i + 1][(j * 10 + k) % 13] += dp[i][j]) %= 1000000007;cout << dp[s.size()][5];return 0;
      |     ^~~~~~
a.cc:5:5: note: suggested alternatives:
In file included from /usr/include/c++/14/string:41,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:5:14: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    5 |     string s;cin >> s;dp[0][0] = 1;REP(i, s.size())REP(j, 13) REP(k, 10)if(s[i] == '?' || s[i] - '0' == k)(dp[i + 1][(j * 10 + k) % 13] += dp[i][j]) %= 1000000007;cout << dp[s.size()][5];return 0;
      |              ^~~
      |              std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:5:21: error: 's' was not declared in this scope
    5 |     string s;cin >> s;dp[0][0] = 1;REP(i, s.size())REP(j, 13) REP(k, 10)if(s[i] == '?' || s[i] - '0' == k)(dp[i + 1][(j * 10 + k) % 13] += dp[i][j]) %= 1000000007;cout << dp[s.size()][5];return 0;
      |                     ^
a.cc:5:164: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    5 |     string s;cin >> s;dp[0][0] = 1;REP(i, s.size())REP(j, 13) REP(k, 10)if(s[i] == '?' || s[i] - '0' == k)(dp[i + 1][(j * 10 + k) % 13] += dp[i][j]) %= 1000000007;cout << dp[s.size()][5];return 0;
      |                                                                                                                                                                    ^~~~
      |                                                                                                                                                                    std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C++

#include<iostream>
using namespace std;
int main(){
  int A,B;
  cin>>A>>B;
  if((A+B)%2==0){
    cout<<(A+B)/2;
  }else{
    cour<<"IMPOSSIBLE";
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:5: error: 'cour' was not declared in this scope
    9 |     cour<<"IMPOSSIBLE";
      |     ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
  long long a,b;
  cin>>a>>b;
  if((a+b)%2==0)
    cout<<(a+b)/2<<endl;
  else
    cout<<IMPOSSIBLE<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:11: error: 'IMPOSSIBLE' was not declared in this scope
   10 |     cout<<IMPOSSIBLE<<endl;
      |           ^~~~~~~~~~
Language: C++

static const unsigned long long MOD = 1000000007LL;

int n;
char s[100005];
uint64_t dp[100005][13];

uint64_t solve () {
    int i, j, ki;
    uint64_t res = 0;

    scanf("%s", s);
    n = strlen(s);

    dp[0][0] = 1;
    for (i = 0; i < n; i++) {
        int c;
        if (s[i] == '?') c = -1;
        else c = s[i] = '0';

        for(j = 0; j < 10; j++) {
            if (c != -1 && c != j) continue;
            for (ki = 0; ki < 13; ki++) {
                dp[i + 1][(ki * 10 + j) % 13] += dp[i][ki];
            }
        }
        for (j = 0; j < 13; j++) dp[i + 1][j] %= MOD;
    }
    res = dp[n][5];

    printf("%llu\n", res);
    return 0;
}


Compiler output:
a.cc:5:1: error: 'uint64_t' does not name a type
    5 | uint64_t dp[100005][13];
      | ^~~~~~~~
a.cc:1:1: note: 'uint64_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
  +++ |+#include <cstdint>
    1 | static const unsigned long long MOD = 1000000007LL;
a.cc:7:1: error: 'uint64_t' does not name a type
    7 | uint64_t solve () {
      | ^~~~~~~~
a.cc:7:1: note: 'uint64_t' is defined in header '<cstdint>'; this is probably fixable by adding '#include <cstdint>'
Language: C++

#include <bits/stdc++.h>
int main(){
 int a,b;
  cin>>a>>b;
  if((a+b)%2==0){
    cout<<(a+b)/2;
  }
  else{
    cout<<"IMPOSSIBLE";
  }
      
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    4 |   cin>>a>>b;
      |   ^~~
      |   std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:6:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    6 |     cout<<(a+b)/2;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:9:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    9 |     cout<<"IMPOSSIBLE";
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
Language: C

// template
#include <bits/stdc++.h>
using namespace std;
typedef long long int ll;
typedef pair<long long, long long> LP;
#define INF 999999999
#define MOD 1000000007
#define REP(i, n) for(ll i = 0, i##_len = (n); i < i##_len; ++i)
#define REP_AB(i, a, b) for (ll i = ll(a); i <= ll(b); ++i)
#define ALL(v) v.begin(), v.end()
#define SORT(v) sort(ALL(v))
#define UNIQUE(v) sort(ALL(v));v.erase(unique(ALL(v)), v.end());
#define SIZE(x) ((ll)(x).size())
#define REVERSE(v) reverse(ALL(v))
// true / false
#define BIN_SEARCH(v, a) binary_search(ALL(v), a)
// index
#define BIN_LEFT(v, a) (lower_bound(ALL(v), a) - v.begin())
#define BIN_RIGHT(v, a) (upper_bound(ALL(v), a) - v.begin())
#define BIN_INSERT(v, a) (v.insert(v.begin() + BIN_LEFT(v, a), a))
#define DEL(v, i) v.erase(v.begin() + i)
#define INSERT(v, i, a) v.insert(v.begin() + i, a)
ll gcd(ll a,ll b){return b?gcd(b,a%b):a;}
ll lcm(ll a,ll b){return (a / gcd(a, b)) * b;}
int dx[4]={1,0,-1,0};
int dy[4]={0,1,0,-1};
#define out cout
#define in cin
template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }
// template end
 
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    ll a, b;
    in >> a >> b;
 
    ll k = (a+b) / 2;
    if(abs(a - k) == abs(b - k)){
        out << k << endl;
    }else{
        out << "IMPOSSIBLE" << endl;
    }
}

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++

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

int main() {
  int N;
  cin >> N;
  vector<long> A(N + 1);
  vector<long> B(N);
  for(int i = 0;i < N + 1;i++)cin >> A.at(i);
  for(int i = 0;i < N;i++)cin >> B.at(i);
  long ma[100000];
  long mb[100000];
  if(A.at(0) + A.at(1) < B.at(0)){
    ma[0] = A.at(0);
    mb[0] = A.at(1);}
  else if(A.at(0) < B.at(0) && A.at(0) + A.at(1) >= B.at(0)){
    ma[0] = A.at(0);
    mb[0] = B.at(0) - A.at(0);}
 else if(A.at(0) >= B.at(0)){
   ma[0] = B.at(0);
   mb[0] = 0;}
  for(int i = 1;i < N;i++){
    if(A.at(i) + A.at(i + 1) - mb[i - 1] < B.at(i)){
   ma[i] = A.at(i) - mb[i - 1];
   mb[i] = A.at(i + 1);}
    else if(A.at(i) - mb[i - 1] < B.at(i) && A.at(i) + A.at(i + 1) - mb[i - 1] >= B.at(i)){
   ma[i] = A.at(i) - mb[i - 1];
   mb[i] = B.at(i) - A.at(i) + mb[i - 1];}
    else{
   ma[i] = B.at(0);
   mb[i] = 0;}
  }
  long X = 0;
  for(int i = 0;i < N;i++){
    X += ma[i];
    X += mb[i];
  }
    cout << X << endl;
}


Compiler output:
a.cc:3:7: error: expected nested-name-specifier before 'long'
    3 | using long = long long;
      |       ^~~~
Language: Java

import java.util.*;
public class a{
	public static void main(String[] args){
		int a , b;
		Scanner input = new Scanner(System.in);
		a = input.nextInt();
		b = input.nextInt();
		if((a+b)%2 == 0)
			System.out.println((a+b)/2);
		else
			System.out.println("Impossible");

	}
}

Compiler output:
Main.java:2: error: class a is public, should be declared in a file named a.java
public class a{
       ^
1 error
Language: C++

#include<bits/stdc++.h>
#include <time.h>
using namespace std;   
int main(void){
      int n,cnt=0;
      cin>>n;
      FOR(n){
        int a;
        cin>>a;
        if(a!=i+1)cnt++;
      }
      if(cnt<3){
        PRS("YES");
      }else{
        PRS("NO");
      }
      return 0;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: 'FOR' was not declared in this scope
    7 |       FOR(n){
      |       ^~~
a.cc:13:9: error: 'PRS' was not declared in this scope
   13 |         PRS("YES");
      |         ^~~
a.cc:15:9: error: 'PRS' was not declared in this scope
   15 |         PRS("NO");
      |         ^~~
Language: C++

    #include<bits/stdc++.h>
    #define FOR(n) for(int i=0;i<n;i++)
    #define PRN(n) cout<<n
    #define PRS(s) printf("%s\n",s)
    int main(void){
      int n,cnt=0;
      cin>>n;
      FOR(n){
        int a;
        cin>>a;
        if(a!=i+1)cnt++;
      }
      if(cnt<3){
        PRS("YES");
      }else{
        PRS("NO");
      }
      return 0;
    }

Compiler output:
a.cc: In function 'int main()':
a.cc:7:7: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |       cin>>n;
      |       ^~~
      |       std::cin
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
Language: C++

#include <iostream>
#include <algorithm>
#include <vector>

#define rep(i,n) for(int i = 0; i < (int) n; i++)

using namespace std;
typedef long long int;

int main() {
	
	int n;
	int ans = 0;
	cin >> n;
	vector<int> a(n + 1);
	vector<int> b(n);
	rep(i, n+1) cin >> a[i];
	rep(i,n) cin >> b[i];

	rep(i, n) 
		if (a[i] > b[i]) {
			ans += b[i];
		}
		else {
			ans += a[i];
			if (a[i + 1] > b[i] - a[i]) {
				ans += b[i] - a[i];
				a[i + 1] -= (b[i] - a[i]);
			}
			else {
				ans += a[i + 1];
				a[i + 1] = 0;
			}
		}

	cout << ans << endl;

	return 0;

}

Compiler output:
a.cc:8:19: error: declaration does not declare anything [-fpermissive]
    8 | typedef long long int;
      |                   ^~~
Language: C++

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

int main() {
    int n; cin >> n;
    long long front = 0;
    vector<int> A(n + 1);
    vector<int> B(n);
    for (int i = 0; i < n + 1; i++)
    {
        A[i] = a[i];
    }
    for (int i = 0; i < n; i++)
    {
        B[i] = b[i];
    }
    
    for (int i = 0; i < n; i++)
    {
        if (A[i] <= B[i])
        {
            B[i] -= A[i];
            front += A[i];
            A[i] = 0;
            if (A[i + 1] <= B[i])
            {
                B[i] -= A[i + 1];
                front += A[i + 1];
                A[i + 1] = 0;
            }
            else
            {
                A[i + 1] -= B[i];
                front += B[i];
                B[i] = 0;
            }
            
        }
        else
        {
            A[i] -= B[i];
            front += B[i];
            B[i] = 0;
        }
        
        
    }
    cout << front << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:16: error: 'a' was not declared in this scope
   11 |         A[i] = a[i];
      |                ^
a.cc:15:16: error: 'b' was not declared in this scope
   15 |         B[i] = b[i];
      |                ^
Language: C++

#include<bits/stdc++.h>
#define rep(i,n) for(int i = 0;i<n;i++)
using namespace std;
int main(){
  double a,b;
  cin>>a,b;
  double k = (a+b)/2;
  if((a+b)%2==0) cout << k <<endl;
  else cout <<"IMPOSSIBLE"<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:11: error: invalid operands of types 'double' and 'int' to binary 'operator%'
    8 |   if((a+b)%2==0) cout << k <<endl;
      |      ~~~~~^~
      |        |   |
      |        |   int
      |        double
Language: C++

#include <iostream>
using namespace std;
 
int main() {
    int n
    long long ans=0;
    long long a[100000+1],b[100000];
    cin >>n;
    for(int i=0;i<=n;i++){
        cin >>a[i];
    }
    for(int i=0;i<n;i++){
        cin >>b[i];
    }
    for(int i=0;i<n;i++){
        if(a[i]<b[i]){
          ans += a[i];
          b[i] -= a[i];
          if(b[i]>0){
            if(a[i]<b[i]){
              ans += a[i+1];
              a[i+1]=0;
            } else {
              a[i+1] -= b[i];
              ans += b[i];
            }
          }
        } else {
          ans += b[i];
          b[i] =0;
        }
    }
    cout << ans <<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: expected initializer before 'long'
    6 |     long long ans=0;
      |     ^~~~
a.cc:8:11: error: 'n' was not declared in this scope
    8 |     cin >>n;
      |           ^
a.cc:17:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   17 |           ans += a[i];
      |           ^~~
      |           abs
a.cc:29:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   29 |           ans += b[i];
      |           ^~~
      |           abs
a.cc:33:13: error: 'ans' was not declared in this scope; did you mean 'abs'?
   33 |     cout << ans <<endl;
      |             ^~~
      |             abs
Language: C++

#include <iostream>
#include <string>
#include <algorithm>
#inckude <math.h>

using namespace std;

int main(){
    int A,B;
    cin >> A >> B;
    double ans; 
    int tmp = abs(A-B);
    ans = tmp;
    ans = ans / 2; 
    if(ans == int(ans)){
        int ans_2 = abs(A-ans);
        cout << ans_2 << endl;
    }else{
        cout << "IMPOSSIBLE" << endl;   
    }
}

Compiler output:
a.cc:4:2: error: invalid preprocessing directive #inckude; did you mean #include?
    4 | #inckude <math.h>
      |  ^~~~~~~
      |  include
Language: C++

#include <iostream> 
using namespace std ; 
 
int main ()
{
  int n ;
  int p [ 51 ];
  
  cin >> n ;
  for ( int i = 0 ; i < n ; i ++) {
    cin >> p [ i ];
  }
  
  int c = n ;
  int v [ 51 ] = { 0 };
  for ( int i = 0 ; i < n ; i ++) {
    if ( p [ i ] == ( i + 1 )) {
     c -; 
    }
    else {
      v [ i ] = p [ i ];
    }
  }
  
  int temp = 0 ; 
  if ( c == 0 ) cout << "YES" ; 
  
  else if ( c == 2 ) { 
    int i , j , count = n ;
    for ( i = 0 ; i < 51 ; i ++) {
      if ( v [ i ] ! = 0 ) {  
        temp = i;
        break ;
      }
    }
    for ( j = i ; j < 51 ; j ++) {
      if ( v [ j ] ! = 0 ) {  
        i=j
        j= temp ;
        break ;
      }
    }
    
    for ( int k = 0 ; k < n ; k ++) {
     if ( p [ k ] == ( k + 1 )) {
      count -; 
     }
    }
    if ( count == 0 ) cout << "YES" ; 
    else cout << "NO" ; 
    return 0 ; 
  }
  else cout << "NO" ; 
  
  
 return 0 ;  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:9: error: expected primary-expression before ';' token
   18 |      c -;
      |         ^
a.cc:31:19: error: expected ')' before '!' token
   31 |       if ( v [ i ] ! = 0 ) {
      |          ~        ^~
      |                   )
a.cc:37:19: error: expected ')' before '!' token
   37 |       if ( v [ j ] ! = 0 ) {
      |          ~        ^~
      |                   )
a.cc:38:12: error: expected ';' before 'j'
   38 |         i=j
      |            ^
      |            ;
   39 |         j= temp ;
      |         ~   
a.cc:46:14: error: expected primary-expression before ';' token
   46 |       count -;
      |              ^
Language: C

#include <stdio.h>
int main(){
  int K, A, B;
  int X, Y, N;
  scanf("%d %d", &A, &B);
  if(A<B){
    N = B - A;
  }else{
    N = A - B;
  }
  for(K=0; K<=N+1; K++){
    X = A - K;
    Y = B - K;
    if(X < 0) X = -X;
    if(Y < 0) Y = -Y;
    if(X == Y){
      printf("%d", K);
      break;
  }
  if (K = N+1) printf("IMPOSSIBLE\n");
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:22:1: error: expected declaration or statement at end of input
   22 | }
      | ^
Language: C

#include<stdio.h>


int main(){
  int A,B;
  scanf(%d %d, &A, &B);
  if( (A+B) %2 == 0){
    printf("%d\n", (A+B/2));
  } else {

  printf("IMPOSSIBLE\n")
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:9: error: expected expression before '%' token
    6 |   scanf(%d %d, &A, &B);
      |         ^
main.c:11:25: error: expected ';' before '}' token
   11 |   printf("IMPOSSIBLE\n")
      |                         ^
      |                         ;
   12 |   }
      |   ~
Language: C++

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

int main(){
    int n,c;
    cin>>n>>c;
    if((n+c)%2==0){
      cout<<(n+c)/2<<"\n";
     else
      cout<<"IMPOSSIBLE\n";
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:10:6: error: expected '}' before 'else'
   10 |      else
      |      ^~~~
a.cc:8:19: note: to match this '{'
    8 |     if((n+c)%2==0){
      |                   ^
Language: C++

using namespace std;

int main(){
  int a,b;
  cin >> a >> b;
  if(abs(b-a) % 2 == 0){
    cout << (a+b)/2 << endl;
  }
  else{
    cout << "IMPOSSIBLE" << endl;
  }
}

Compiler output:
a.cc: In function 'int main()':
a.cc:5:3: error: 'cin' was not declared in this scope
    5 |   cin >> a >> b;
      |   ^~~
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:6:6: error: 'abs' was not declared in this scope
    6 |   if(abs(b-a) % 2 == 0){
      |      ^~~
a.cc:7:5: error: 'cout' was not declared in this scope
    7 |     cout << (a+b)/2 << endl;
      |     ^~~~
a.cc:7:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:7:24: error: 'endl' was not declared in this scope
    7 |     cout << (a+b)/2 << endl;
      |                        ^~~~
a.cc:1:1: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
  +++ |+#include <ostream>
    1 | using namespace std;
a.cc:10:5: error: 'cout' was not declared in this scope
   10 |     cout << "IMPOSSIBLE" << endl;
      |     ^~~~
a.cc:10:5: note: 'std::cout' is defined in header '<iostream>'; this is probably fixable by adding '#include <iostream>'
a.cc:10:29: error: 'endl' was not declared in this scope
   10 |     cout << "IMPOSSIBLE" << endl;
      |                             ^~~~
a.cc:10:29: note: 'std::endl' is defined in header '<ostream>'; this is probably fixable by adding '#include <ostream>'
Language: Java

import java.util.Scanner;

public class AHarmony {

    public static void main(String args[] ) throws Exception {


        Scanner s = new Scanner(System.in);


        int a = s.nextInt();    // Reading input from STDIN
        int b = s.nextInt();

        int sum = a+b;
        int k = sum/2;

        if(sum%2==0){
            System.out.println(k);
        }else{
            System.out.println("IMPOSSIBLE");
        }

    }
}


Compiler output:
Main.java:3: error: class AHarmony is public, should be declared in a file named AHarmony.java
public class AHarmony {
       ^
1 error
Language: C++

#include <stdio.h>

int main(void) {
	int a, b, c, k, z1, z2;
	int flag = 0;

	printf("a b input\n");
	scanf_s("%d%d", &a, &b);


	for (k = 0; k < 1000000000; k++) {
		z1 = a - k;
		z2 = b - k;
		if (z1 < 0)z1 = z1 * -1;
		if (z2 < 0)z2 = z2 * -1;
		if (z1 == z2) {
			printf("%d", k);
			flag = 1;
		}
		
	}



	if (flag = 0) {
		printf("IMPOSSIBLE\n");
	}
	scanf_s("%d", &c);
	
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    8 |         scanf_s("%d%d", &a, &b);
      |         ^~~~~~~
      |         scanf
Language: Java

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner inp = new Scanner(System.in);
        String s= inp.nextLine();
        String t= inp.nextLine();
        int k=(s.length()-temp.length()) ;
        k=k/t.length();
        System.out.println(k);
    }
}

Compiler output:
Main.java:8: error: cannot find symbol
        int k=(s.length()-temp.length()) ;
                          ^
  symbol:   variable temp
  location: class Main
1 error
Language: C++

#include<iostream>

using namespace std;

const long long N = 1e9 + 5;
long long a[N],b[N];
//long long a[1e9],b[1e9];

int main(){
	int n;
	scanf("%d",&n);

	for(int i = 0; i < n+1; i++){
		scanf("%d",&a[i]);
	}
	for(int i = 0; i < n; i++){
		scanf("%d",&b[i]);
	}	
	long long s = 0;
	for(int i = 0; i < n; i++){
		if(a[i] >= b[i]){
			s += b[i];
			b[i] = 0;
		}
		else if( a[i] < b[i] ){
			if(a[i]+a[i+1] >=b[i]){
				s += b[i];
				a[i+1] = a[i] + a[i+1] - b[i];
			}
			else {
				s += a[i]+a[i+1];
				a[i+1] = 0;	
			}					
		}
	}
	printf("%lld\n",s);
	return 0;
}

Compiler output:
/tmp/ccfBAgUR.o: in function `main':
a.cc:(.text+0x7f): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0xe5): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0x102): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0x11e): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0x157): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0x1af): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0x1d0): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
a.cc:(.text+0x223): relocation truncated to fit: R_X86_64_PC32 against symbol `b' defined in .bss section in /tmp/ccfBAgUR.o
collect2: error: ld returned 1 exit status
Language: C++

#include<cmath>
#include<iostream>
#include<algorithm>
using namespace std;
int main(){
  int a,b;
  cin >> a>> b;
  if((a+b)%2){
    cout << "IMPOSSIBlE"\n;
  }else{
    cout << (a+b)/2<< endl;
  }
  return 0;
}


Compiler output:
a.cc:9:25: error: stray '\' in program
    9 |     cout << "IMPOSSIBlE"\n;
      |                         ^
a.cc: In function 'int main()':
a.cc:9:25: error: expected ';' before 'n'
    9 |     cout << "IMPOSSIBlE"\n;
      |                         ^~
      |                         ;
Language: C++

#include<iostream>
#include<stdlib.h>

int A, B;
int flag=0;
int adna=0;
int i=0;

std::cin >> A >> B;

if(A%2-B%2==0){
  std::cout << "IMPOSSIBLE";
}else{
  for(i=1;i<=(A+B)/2;i++){
    if(abs(A-i)-abs(B-i)==0){
      flag=1;
      adna=i;
      break;
    }
  }
  if(flag==0){
    std::cout << "IMPOSSIBLE";
  }else{
    std::cout << adna;
  }
}


Compiler output:
a.cc:9:6: error: 'cin' in namespace 'std' does not name a type
    9 | std::cin >> A >> B;
      |      ^~~
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:11:1: error: expected unqualified-id before 'if'
   11 | if(A%2-B%2==0){
      | ^~
a.cc:13:2: error: expected unqualified-id before 'else'
   13 | }else{
      |  ^~~~
Language: C++

#include <bits/stdc++.h>
#include <stdlib.h>

int A, B;
int flag=0, adna=0;
int i;

std::cin >> A >> B ;

if(A%2-B%2==0){
  std::cout << "IMPOSSIBLE";
}else{
  for(i=1;i<=(A+B)/2;i++){
    if(abs(A-i)-abs(B-i)==0){
      flag=1;
      adna=i;
      break;
    }
  }
  if(flag==0){
    std::cout << "IMPOSSIBLE";
  }else{
    std::cout << adna;
  }
}


Compiler output:
a.cc:8:6: error: 'cin' in namespace 'std' does not name a type
    8 | std::cin >> A >> B ;
      |      ^~~
In file included from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:146,
                 from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:10:1: error: expected unqualified-id before 'if'
   10 | if(A%2-B%2==0){
      | ^~
a.cc:12:2: error: expected unqualified-id before 'else'
   12 | }else{
      |  ^~~~
Language: Java

import java.util.Scanner;

public class A {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        long a = scan.nextLong();
        long b = scan.nextLong();

        if((a+b)%2 == 0){
            System.out.println((a+b)/2);
        }else{
            System.out.println("IMPOSSIBLE");
        }
    }
}


Compiler output:
Main.java:3: error: class A is public, should be declared in a file named A.java
public class A {
       ^
1 error
Language: C++

#include <bits/stdc++.h>
#include <stdlib.h>

using namespace std;

int A, B;
int flag=0, adna=0;
int i;

cin >> A >> B ;

if(A%2-B%2==0){
  cout << "IMPOSSIBLE";
}else{
  for(i=1;i<=(A+B)/2;i++){
    if(abs(A-i)-abs(B-i)==0){
      flag=1;
      adna=i;
      break;
    }
  }
  if(flag==0){
    cout << "IMPOSSIBLE";
  }else{
    cout << adna;
  }
}

Compiler output:
a.cc:10:1: error: 'cin' does not name a type
   10 | cin >> A >> B ;
      | ^~~
a.cc:12:1: error: expected unqualified-id before 'if'
   12 | if(A%2-B%2==0){
      | ^~
a.cc:14:2: error: expected unqualified-id before 'else'
   14 | }else{
      |  ^~~~
Language: Java

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        long a = scan.nextLong();
        long b = scan.nextLong();

        if((a+b)%2 == 0){
            System.out.println((a+b)/2);
        }else{
            System.out.println("IMPOSSIBLE");
        }
    }
}

Compiler output:
Main.java:3: error: cannot find symbol
        Scanner scan = new Scanner(System.in);
        ^
  symbol:   class Scanner
  location: class Main
Main.java:3: error: cannot find symbol
        Scanner scan = new Scanner(System.in);
                           ^
  symbol:   class Scanner
  location: class Main
2 errors
Language: C++

#include<cmath>
#include<iostream>
#include<algorithm>
using namespace std;
int main(){
  int a,b;
  cin >> a>> b;
  if((a+b)%2){
    cout << "IMPOSIBlE";
  }else{
    cout << abs(a+b)/2;
  }
  return 0;



Compiler output:
a.cc: In function 'int main()':
a.cc:13:12: error: expected '}' at end of input
   13 |   return 0;
      |            ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include <iostream>
using namesapce std;

int main() {
  int A, B;
  cin >> A >> B;
  if((A + B)%2 == 0){
    cout << (A + B)%2 << endl;
  } else {
    cout << "IMPOSSIBLE" << endl;
  }
}
    

Compiler output:
a.cc:2:7: error: expected nested-name-specifier before 'namesapce'
    2 | using namesapce std;
      |       ^~~~~~~~~
a.cc: In function 'int main()':
a.cc:6:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    6 |   cin >> A >> B;
      |   ^~~
      |   std::cin
In file included from a.cc:1:
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:8:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
    8 |     cout << (A + B)%2 << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:8:26: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
    8 |     cout << (A + B)%2 << endl;
      |                          ^~~~
      |                          std::endl
In file included from /usr/include/c++/14/iostream:41:
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
a.cc:10:5: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   10 |     cout << "IMPOSSIBLE" << endl;
      |     ^~~~
      |     std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:10:29: error: 'endl' was not declared in this scope; did you mean 'std::endl'?
   10 |     cout << "IMPOSSIBLE" << endl;
      |                             ^~~~
      |                             std::endl
/usr/include/c++/14/ostream:744:5: note: 'std::endl' declared here
  744 |     endl(basic_ostream<_CharT, _Traits>& __os)
      |     ^~~~
Language: Java

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

	int a;
	int b;

	a = Integer.parseInt(br.readLine());     
	b = Integer.parseInt(br.readLine());

	if ((a + b) % 2 == 0){      
    System.out.println((a+b)%2);
	} 
     else {                    
    System.out.println("IMPOSSIBLE");
	}
    }
}
      

Compiler output:
Main.java:1: error: class main is public, should be declared in a file named main.java
public class main {
       ^
Main.java:7: error: cannot find symbol
	a = Integer.parseInt(br.readLine());     
	                     ^
  symbol:   variable br
  location: class main
Main.java:8: error: cannot find symbol
	b = Integer.parseInt(br.readLine());
	                     ^
  symbol:   variable br
  location: class main
3 errors
Language: Java

import java.util.*;
import java.util.InputMismatchException;
public class Main {
	public static void main(String[] args){
      try{
		Scanner sc = new Scanner(System.in);
      	
//      int a = Integer.parseInt(args[0]);
//      int a = Integer.parseInt(args[1]);

      
	      int a = sc.nextInt();
	      int b = sc.nextInt();
	      int k;
      
	      if(a == b){
 	  	     System.out.println("IMPOSSIBLE");
          }else if(a < 0){
            System.out.println("IMPOSSIBLE");
          }else if (b > 1000000000){
            System.out.println("IMPOSSIBLE");
	      }else{
	        k=(b+a)/2;
            if((k*2) != (a+b)){
              System.out.println("IMPOSSIBLE");
            }else{
			System.out.println(k);
	      } 
      }catch(InputMismatchException e){
        System.out.println("IMPOSSIBLE");
      }
	}
}


Compiler output:
Main.java:29: error: 'catch' without 'try'
      }catch(InputMismatchException e){
       ^
Main.java:5: error: 'try' without 'catch', 'finally' or resource declarations
      try{
      ^
Main.java:33: error: reached end of file while parsing
}
 ^
3 errors
Language: Java

import java.util.*;
import java.util.InputMismatchException;
public class Main {
	public static void main(String[] args){
      try{
		Scanner sc = new Scanner(System.in);
      	
//      int a = Integer.parseInt(args[0]);
//      int a = Integer.parseInt(args[1]);

      
	      int a = sc.nextInt();
	      int b = sc.nextInt();
	      int k;
      
	      if(a == b){
 	  	     System.out.println("IMPOSSIBLE");
          }else if(a < 0){
            System.out.println("IMPOSSIBLE");
          }else if (b > 1000000000){
            System.out.println("IMPOSSIBLE");
	      }else{
	        k=(b+a)/2;
            if((k*2) != (a+b){
              System.out.println("IMPOSSIBLE");
            }
			System.out.println(k);
	      } 
      }catch(InputMismatchException e){
        System.out.println("IMPOSSIBLE");
      }
	}
}


Compiler output:
Main.java:24: error: ')' expected
            if((k*2) != (a+b){
                             ^
1 error
Language: C++

#include <bits/stdc++.h>

using namespace std;
#define int long long
#define pb push_back
template <typename T1, typename T2> inline void chkmin(T1 &x, const T2 & y) {if (x > y) x = y;}
template <typename T1, typename T2> inline void chkmax(T1 &x, const T2 & y) {if (x < y) x = y;}

signed main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int a, b;
	cin >> a >> b;
	s = a + b;
	if (s % 2 == 1)
		cout << "IMPOSSIBLE";
	else
		cout << s / 2 << endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:15:9: error: 's' was not declared in this scope
   15 |         s = a + b;
      |         ^
Language: Java

import java.util.*;
import java.util.InputMismatchException;
public class Main {
	public static void main(String[] args){
      try{
          Scanner sc = new Scanner(System.in);
   
	      long a = sc.nextLong();
	      long b = sc.nextLong();
	      long k;
      
	      if(a == b){
 	  	     System.out.println("IMPOSSIBLE");
          }else if(a < 0){
            System.out.println("IMPOSSIBLE");
          }else if (b >  Math.pow(10, 9)){
            System.out.println("IMPOSSIBLE");
	      }else{
	        k=(b+a)/2;
			System.out.println(k);
	      } 
      }catch(InputMismatchException e){
        System.out.println("IMPOSSIBLE");
      }catch(Exception e){
        System.out.println("IMPOSSIBLE");
	}
}


Compiler output:
Main.java:27: error: reached end of file while parsing
}
 ^
1 error
Language: C

#include<stdio.h>
#include<math.h>

int main(void) {

	int A, B, K = 0;

	printf("AとBを入力\n");
	scanf_s("%d%d", &A, &B);

	if ((A + B) % 2 == 0){
		K = (A + B) / 2;
	printf("%d", K);
  }
    else {

     printf("IMPOSSIBLE\n");
		}
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
    9 |         scanf_s("%d%d", &A, &B);
      |         ^~~~~~~
      |         scanf
Language: C++

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

int main(){
	int A,B,K;
	cin >> A >> B;

  	for (K=0;K<10**9;K++){
  		if ( abs(A-K) == abs(B-K)){
    		cout << K << endl;
    	}
  
  		else{
    		cout << "IMPOSSIBLE" << endl;
    	}
    }

	return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:8:23: error: invalid type argument of unary '*' (have 'int')
    8 |         for (K=0;K<10**9;K++){
      |                       ^~
Language: C++

#include<iostream>
using namespace std;
 
int main(){
  
  int a,b;
  cin >> a >> b;
  
  if(b > 0){
    cout << IMPOSSIBLE << endl;
  }else if(b+(a-b)/2 == a-(a-b)/2){
    cout << b+(a-b)/2 << endl;
  }
  else{
    cout << "IMPOSSIBLE" << endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'IMPOSSIBLE' was not declared in this scope
   10 |     cout << IMPOSSIBLE << endl;
      |             ^~~~~~~~~~
Language: C++

#include<iostream>
using namespace std;

int main(){
  
  int a,b;
  cin >> a >> b;
  
  if(b > 0){
    cout << IMPOSSIBLE << endl;
  }else if(b+(a-b)/2 == a-(a-b)/2){
    cout << b+(a-b)/2 << endl
  }
  else{
    cout << IMPOSSIBLE << endl;
  }
  return 0;
}

    
    
    
    

Compiler output:
a.cc: In function 'int main()':
a.cc:10:13: error: 'IMPOSSIBLE' was not declared in this scope
   10 |     cout << IMPOSSIBLE << endl;
      |             ^~~~~~~~~~
a.cc:12:30: error: expected ';' before '}' token
   12 |     cout << b+(a-b)/2 << endl
      |                              ^
      |                              ;
   13 |   }
      |   ~                           
a.cc:15:13: error: 'IMPOSSIBLE' was not declared in this scope
   15 |     cout << IMPOSSIBLE << endl;
      |             ^~~~~~~~~~
Language: Java

import java.util.*;
import java.util.InputMismatchException;
public class Main {
	public static void main(String[] args){
      try{
		Scanner sc = new Scanner(System.in);
      	
//      int a = Integer.parseInt(args[0]);
//      int a = Integer.parseInt(args[1]);

      
	      long a = sc.nextLong();
	      long b = sc.nextLong();
	      long k;
      
	      if(a == b){
 	  	     System.out.println("IMPOSSIBLE");
          }else if(a < 0){
            System.out.println("IMPOSSIBLE");
          }else if (b > 10000000000){
            System.out.println("IMPOSSIBLE");
	      }else{
	        k=(b+a)/2;
			System.out.println(k);
	      } 
      }catch(InputMismatchException e){
        System.out.println("IMPOSSIBLE");
      }
	}
}


Compiler output:
Main.java:20: error: integer number too large
          }else if (b > 10000000000){
                        ^
1 error
Language: Java

import java.util.*;
import java.util.InputMismatchException;
public class Main {
	public static void main(String[] args){
      try{
		Scanner sc = new Scanner(System.in);
      	
//      int a = Integer.parseInt(args[0]);
//      int a = Integer.parseInt(args[1]);

      
	      int a = sc.nextInt();
	      int b = sc.nextInt();
	      int k;
      
	      if(a == b){
 	  	     System.out.println("IMPOSSIBLE");
          }else if(a < 0){
            System.out.println("IMPOSSIBLE");
          }else if (b > 10000000000){
            System.out.println("IMPOSSIBLE");
	      }else{
	        k=(b+a)/2;
			System.out.println(k);
	      } 
      }catch(InputMismatchException e){
        System.out.println("IMPOSSIBLE");
      }
	}
}


Compiler output:
Main.java:20: error: integer number too large
          }else if (b > 10000000000){
                        ^
1 error
Language: C++

#include <iostream>
using namespace std;
int main() {
	int A, B, c = 0, K = 0, i;
	cin >> A >> B;
	if (A > B) {
		c = A;
		A = B;
		B = c;
	}
	for (i = 0; i < B; i++) {
		if (| A - i | == | B - i | )
		{
			K = i;
			cout << K << endl;
			break;
		}
		else { K = -1; }
	}
	if (K == -1) {
		cout << "IMPOSSIBLE" << endl;
	}
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:21: error: expected primary-expression before '|' token
   12 |                 if (| A - i | == | B - i | )
      |                     ^
a.cc:12:31: error: expected primary-expression before '==' token
   12 |                 if (| A - i | == | B - i | )
      |                               ^~
a.cc:12:34: error: expected primary-expression before '|' token
   12 |                 if (| A - i | == | B - i | )
      |                                  ^
a.cc:12:44: error: expected primary-expression before ')' token
   12 |                 if (| A - i | == | B - i | )
      |                                            ^
Language: C++

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

int main() {
  int n;
  cin >> n;
  vector<int> data(n);
  for (int i = 0; i < n; i++) {
    cin >> data.at(i);
  }
  int answer = 0;

  for (int i = 0; i < n; i++) {

    if (data.at(i) < data.at(i+1) ) {
      answer++;
    }

  }

	if(answer < 2){
	cout << YES << endl;
	}
	else if(answer >= 2){
	cout << NO << endl;
	}
}



Compiler output:
a.cc: In function 'int main()':
a.cc:22:17: error: 'YES' was not declared in this scope
   22 |         cout << YES << endl;
      |                 ^~~
a.cc:25:17: error: 'NO' was not declared in this scope
   25 |         cout << NO << endl;
      |                 ^~