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

#include <bits/stdc++.h>

using namespace std;
#define _for(i,j,N) for(int i = (j); i < (N);i++)
#define _rep(i,j,N) for(int i = (j); i <= (N);i++)
#define _dec(i,j,N) for(int i = (N-1);i >= 0;i--)
#define _dep(i,j,N) for(int i = (N); i>= 0;i--)
#define ALL(x) x.begin(),x.end()
#define LL long long
#define ULL unsigned LL
#define PB push_back

int a,b,c;
int ans;

void solve(string &s){
    int sz = s.size();
    _for(i,0,sz-1){
        if(s[i] == 'A' && s[i+1]=='B') ++ans;
    }
    if(s[0] == 'B' && s[sz-1] == 'A') c++;
    else if(s[0] == 'B') b++;
    else if(s[sz-1] == 'A') a++;
}

int main()
{
    a = (b = (c = (ans = 0)));
    int N;cin >> N;
    while(N--){
        string s;
        cin >> s;
        solve(s);
    }
    
    if(a = 0 && b = 0){
        ans += max(c-1,0);
        cout << ans << endl;
        return 0;
    }
    
    if(a > b) swap(a,b);
    if(c >= a){
        ans += 2*a + (c-a);
    }
    else{
        ans += 2*c + (a-c);
    }

    cout << ans << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:14: error: lvalue required as left operand of assignment
   36 |     if(a = 0 && b = 0){
      |            ~~^~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
vector<string> s(n);
for(int i=0;i<n;i++){
  cin>>s.at(i);
}
int counter1=0;
for(int i=0;i<n;i++){
for(int j=0;j<s.at(i).size()-1;j++){
if(s.at(i).at(j)=='A'&&s.at(i).at(j+1)=='B'){
counter1++;
}
}
}
int ab=0,a=0,b=0;
for(int k=0;k<n;k++){
if(s.at(k).at(s.at(k).size())=='A'){
if(s.at(k).at(0)=='B')ab++;
else a++;
}
else if(s.at(k).at(0)='B')b++;
}
if(a==b){
cout<<counter+a+ab-1<<endl;
}
else cout<<counter+min(a,b)+ab<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:27:7: error: 'counter' was not declared in this scope; did you mean 'counter1'?
   27 | cout<<counter+a+ab-1<<endl;
      |       ^~~~~~~
      |       counter1
a.cc:29:12: error: 'counter' was not declared in this scope; did you mean 'counter1'?
   29 | else cout<<counter+min(a,b)+ab<<endl;
      |            ^~~~~~~
      |            counter1
Language: C++

#include<bits/stdc++.h>
using namespace std;
int a[10005][2];
string s[10005];
int main(){
	int n;
	cin>>n;
	int sum_1=0,sum_2=0,sum_3=0; 
	long long cnt = 0;
	for(int i=0;i<n;i++){
		cin>>s[i];
		for(int j=0;j<s[i].length()-1;j++)
			if(s[i][j]=='A'&&s[i][j+1]=='B')
				cnt++;
		if(s[i][0]=='B'&&s[i][s[i].length()-1]=='A')
			sum_3++;
		else if(s[i][0]=='B')
			sum_1++;
		else if(s[i][s[i].length()-1]=='A')
			sum_2++;
	}
	if(sum_2==0){
		if(sum_1>=1){
			cout<<cnt+sum_3<<endl;
		}
		else if(sum3>=1)
			cout<<cnt+sum_3-1<<endl;
		else 
			cout<<cnt<<endl;
	}
	else {
		cout<<cnt+sum_3+min(sum_1,sum_2)<<endl; 
	}
} 

Compiler output:
a.cc: In function 'int main()':
a.cc:26:25: error: 'sum3' was not declared in this scope; did you mean 'sum_3'?
   26 |                 else if(sum3>=1)
      |                         ^~~~
      |                         sum_3
Language: C++

#include <bits/stdc++.h>
using namespace std;
int main(){
int n;
cin>>n;
vector<string> s(n);
for(int i=0;i<n;i++){
  cin>>s.at(i);
}
int counter1=0;
for(int i=0;i<n;i++){
for(int j=0;j<s.at(i).size()-1;j++){
if(s.at(i).at(j)=='A'&&s.at(i).at(j+1)=='B'){
counter1++;
}
}
}
int ab=0,a=0,b=0;
for(int k=0;k<n;k++){
if(s.at(k).at(s.at(k).size())=='A'){
if(s.at(k).at(0)=='B')ab++;
else a++;
}
else if(s.at(k).at(0)='B')b++;
}
}
if(a==b){
cout<<counter+a+ab-1<<endl;
}
else cout<<counter+min(a,b)+ab<<endl;
}

Compiler output:
a.cc:27:1: error: expected unqualified-id before 'if'
   27 | if(a==b){
      | ^~
a.cc:30:1: error: expected unqualified-id before 'else'
   30 | else cout<<counter+min(a,b)+ab<<endl;
      | ^~~~
a.cc:31:1: error: expected declaration before '}' token
   31 | }
      | ^
Language: C++

n = gets.chomp.to_i
a = Array.new(n)
cnt = 0
a_hi = 0
b_hi = 0
ab_hi = 0
n.times {|i|
  a[i] = gets.chomp
  a[i].each_char.with_index do |a_char,k|
    if a_char == 'A' and a[i][k+1] == 'B'
      cnt += 1
    end
  end
  if a[i][0] == 'B' and a[i][-1] == 'A'
    ab_hi += 1
  elsif a[i][0] == 'B'
    b_hi += 1
  elsif a[i][-1] == 'A'
    a_hi += 1
  end
}
amari = (a_hi - b_hi).abs

puts cnt + [a_hi,b_hi].min + [ab_hi,amari].min


Compiler output:
a.cc:1:1: error: 'n' does not name a type
    1 | n = gets.chomp.to_i
      | ^
a.cc:22:1: error: 'amari' does not name a type
   22 | amari = (a_hi - b_hi).abs
      | ^~~~~
Language: C++

int main(){
  int N,cnt1=0,cnt2=0,cnt3=0;
  cin >> N;
  vector<string> a(N);
  for(int i=0;i<N;i++){
    cin >> a.at(i);
    if(a.at(i).at(a.at(i).size()-1)=='A')
      cnt1++;
    if(a.at(i).at(0)=='B')
      cnt2++;
    for(int j=0;j<a.at(i).size()-1;j++){
    	if(a.at(i).at(j)=='A'&&a.at(i).at(j+1)=='B')
          cnt3++;
    }
  }
  cout << cnt3+min(cnt1,cnt2) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'cin' was not declared in this scope
    3 |   cin >> N;
      |   ^~~
a.cc:4:3: error: 'vector' was not declared in this scope
    4 |   vector<string> a(N);
      |   ^~~~~~
a.cc:4:10: error: 'string' was not declared in this scope
    4 |   vector<string> a(N);
      |          ^~~~~~
a.cc:4:18: error: 'a' was not declared in this scope
    4 |   vector<string> a(N);
      |                  ^
a.cc:16:3: error: 'cout' was not declared in this scope
   16 |   cout << cnt3+min(cnt1,cnt2) << endl;
      |   ^~~~
a.cc:16:16: error: 'min' was not declared in this scope; did you mean 'main'?
   16 |   cout << cnt3+min(cnt1,cnt2) << endl;
      |                ^~~
      |                main
a.cc:16:34: error: 'endl' was not declared in this scope
   16 |   cout << cnt3+min(cnt1,cnt2) << endl;
      |                                  ^~~~
Language: Java

import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    String[] a = new String[N];
    int ans = 0;
    int aa = 0;
    int bb = 0;
    
    for(int i=0;i<N;i++){
      a[i] = sc.next();
      if(a[i].matches(".*AB.*")){
        ans++;
      }
      if(a[i].startsWith("B")){
        bb++;
      }
      if(a[i].endsWith("A")){
        aa++;
      }
    }
    if(aa - bb >= 0){
      ans + bb;
    }else{
      ans + aa;
    }
    
    System.out.println(ans);
  }
}


Compiler output:
Main.java:25: error: not a statement
      ans + bb;
          ^
Main.java:27: error: not a statement
      ans + aa;
          ^
2 errors
Language: C++

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

int countab(string &s){
  int counter = 0;
  for(int i = 0; i < s.length() - 1; i++){
    if(s.at(i) == 'A' && s.at(i+1) == 'B')
      counter++;
  }
  return counter;
}

int main(){
  int N;
  cin >> N;
  vector<string> A(N);
  for(string &i:A)
    cin >> i;
  int counter = 0;
  int countA = 0;
  int countB = 0;
  int countBA = 0;
  for(string &i:A){
    counter += countab(i);
    if(i.at(0) == 'B' && i.at(i.length() - 1) == 'A')
      countBA++;
    else if(i.at(0) == 'B')
      countB++;
    else if(i.at(i.length() - 1) == 'A')
      countA++;
  }
  
  count += countBA - 1;
  if(countBA > 0){
    if(countA > 0){
      count++;
      countA--;
    }
    if(countB > 0){
      count++;
      countB--;
    }
  }
  
  count += min(countA,countB);
  
  cout << counter << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:33:22: error: overloaded function with no contextual type information
   33 |   count += countBA - 1;
      |                      ^
a.cc:36:12: error: no post-increment operator for type
   36 |       count++;
      |            ^~
a.cc:40:12: error: no post-increment operator for type
   40 |       count++;
      |            ^~
a.cc:45:29: error: overloaded function with no contextual type information
   45 |   count += min(countA,countB);
      |                             ^
Language: C++

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

int main() {
	int N;
	cin >> N;
	int cntA = 0, cntB = 0;
	int ans = 0;

	for (int i = 0; i < N; i++)
	{
		string tmp;
		cin >> tmp;
		int len = tmp.size();
		if (tmp[0] == 'B') cntB++;
		if (tmp[len - 1] == 'A') cntA++;
		for (int j = 0; j < len - 1 ; j++)
		{
			if (tmp[j] == 'A' && tmp[j + 1] == 'B') ans++;
		}
	}

	ans += min(cntA, cntB, N-1);

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


Compiler output:
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h: In instantiation of 'constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare) [with _Tp = int; _Compare = int]':
a.cc:23:12:   required from here
   23 |         ans += min(cntA, cntB, N-1);
      |                ~~~^~~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:284:17: error: '__comp' cannot be used as a function
  284 |       if (__comp(__b, __a))
      |           ~~~~~~^~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define REP(i, n) for(int i = 0;i < n;i++)
#define REPR(i, n) for(int i = n;i >= 0;i--)
#define FOR(i, m, n) for(int i = m;i < n;i++)
#define fi first
#define se second
#define mp make_pair
#define itrfor(itr,A) for(auto itr = A.begin(); itr !=A.end();itr++)
#define dame { printf("No\n"); return 0;}
template <class T> using reversed_priority_queue = priority_queue<T, vector<T>, greater<T> >;
typedef long long llong;
char moji[26]={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
char moji2[26]={'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'};
char moji3[10]={'0','1','2','3','4','5','6','7','8','9'};
#define Sort(a) sort(a.begin(),a.end());
#define Reverse(a) reverse(a.begin(),a.end());
#define print(a) cout << a << endl;
#define MOD llong(1e9+7)
#define MAX int(2 * 1e5 +5)
#define debug(x)  cout << #x << " = " << (x) << endl;
#define pi acos(-1.0)
#define int llong
#define INF llong(1e17)


signed main(){
    int n;
    cin >> n;
    int a = 0,b = 0,ab = 0;
    string s;
    int ans = 0;
    REP(i,n){
        cin >> s;
        if(s[0] == 'B'){
            if(s[s.length() -1] == 'A') ab ++;
            else b ++;
        }
        else if( s[ s.length() -1] == 'A') a ++;
        REP(j,s.length() -1){
            if(s[j] == 'A' and s[j+1] =='B') ans ++;
        }
    }
    if(ab == 0) ans += min(a,b);
    else{
        ans += ab - 1;
        if(a == 0 and b == 0){
            int dd;
        };
        else if(a != 0 and b != 0){
            a -= 1;
            b -= 1;
            ans += 2;
            ans += min(a,b);
        }
        else ans += 1;
    }
    cout << ans << endl;


}








Compiler output:
a.cc: In function 'int main()':
a.cc:50:9: error: 'else' without a previous 'if'
   50 |         else if(a != 0 and b != 0){
      |         ^~~~
Language: C++

#include <iostream>
#include <iomanip>
#include <algorithm>
#include <cmath>
#include <queue>
#include <list>
#include <string>
using namespace std;
 
typedef long long ll;
typedef pair<int, int> P;
const int MOD = 998244353;

int gcd(int a, int b){
  if(b == 0) return a;
  return gcd(b, a%b);
}

int main()
{
  bool flag = true;
  int N;
  string s,str[10000];
  cin >> N;
  int A_count=0,B_count=0,AB_count=0;
  for(int i=0;i<N;i++){
    cin >> s;
    int j=0;
    while (j < s.length()-1)
    {
      if(s[j+1] == 'B'){
        if(s[j] == 'A') AB_count++;
        j+=2;
      }else{
        if(s[j+1] == 'A') j++;
        else j+=2;
      }
    }
    if(s[0] == 'B'){
      if(s[s.length()-1] != 'A') flag = false;
      B_count++;
    }
    if(s[s.length()-1] == 'A'){
      if(s[0] != 'B') flag = false;
      A_count++;
    }
  }
  if(flag && (A_count == N && B_count == N) AB_count--;
  cout << AB_count+min(A_count,B_count);
}


Compiler output:
a.cc: In function 'int main()':
a.cc:48:44: error: expected ';' before 'AB_count'
   48 |   if(flag && (A_count == N && B_count == N) AB_count--;
      |                                            ^~~~~~~~~
      |                                            ;
a.cc:49:40: error: expected ')' before ';' token
   49 |   cout << AB_count+min(A_count,B_count);
      |                                        ^
      |                                        )
a.cc:48:5: note: to match this '('
   48 |   if(flag && (A_count == N && B_count == N) AB_count--;
      |     ^
Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <queue>
#include <stack>
#include <math.h>
#include <map>
#include <time.h>

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<ll, ll> P;

#define pb push_back
#define rep(i, a, n) for(int i = (a); i < (n); i++)
#define dep(i, a, n) for(int i = (a); i >= (n); i--)
#define mod (ll)(1e9+7)
#define int ll

__attribute__((constructor))
void initial() {
  cin.tie(0);
  ios::sync_with_stdio(false);
}

signed main() {
  int n;
  string s[10001];
  int ans = 0;
  int la = 0, kla = 0, fb = 0, kfb = 0;
  int km = 0;
  cin >> n;
  rep(i, 0, n) {
    cin >> s[i];
    int f = false;
    rep(j, 1, s[i].length()) {
      if(s[i][j - 1] == 'A' && s[i][j] == 'B') ans++;
      if(j == s[i].length() - 1 && s[i][j] == 'A') {
        kla++;
        if(fb) ans++, km++, fb--;
        else la++, f = true;
      }
    }
    if(s[i][0] == 'B') {
      klb++;
      if(la - f > 0) la--, ans++, km++;
      else fb++;
    }
  }
  if(km > min(kla, klb)) ans--;
  cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:47:7: error: 'klb' was not declared in this scope; did you mean 'kfb'?
   47 |       klb++;
      |       ^~~
      |       kfb
a.cc:52:20: error: 'klb' was not declared in this scope; did you mean 'kfb'?
   52 |   if(km > min(kla, klb)) ans--;
      |                    ^~~
      |                    kfb
Language: C++

#include<iostream>
#include<algorithm>
#include<cmath>
#include<vector>
#include<string>
#include<queue>
#include<set>
#include<map>
using namespace std;
typedef long long int ll;
typedef vector<pair<ll,ll> > Q;
typedef pair<int,int> P;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
const ll inf=1e9+7;

int main()
{
  int n,ans=0,lasta=0,firstb=0,con=0;
  cin>>n;
  rep(j,n)
  {
    string s;
    cin>>s;
    int len=s.size();

    rep(i,len-1)
    {
      if(s.at(i)=='A' && s.at(i+1)=='B') ans++;
    }

    if(s.at(0)=='B') firstb++;
    if(s.at(len-1)=='A') lasta++;
    if(s.at(len-1)=='A' && s.at(0)=='B') con++;
  }

  if(firstb==0 && lasta==0) continue;
  else if(con==firstb && con==lasta) ans+=(con-1);
  else ans+=min(firstb,lasta);

  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:36:29: error: continue statement not within a loop
   36 |   if(firstb==0 && lasta==0) continue;
      |                             ^~~~~~~~
Language: C++

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<utility>
#include<vector>
#include<queue>
#include<functional>
#include<map>
#include<set>
#include<cstring>
#include<string>
#include<stack>
#include<stdlib.h>
#include<math.h>
using namespace std;
#define int long long
typedef pair<int, int> pii;
typedef pair<int, char> pic;
typedef priority_queue<pii, vector<pii>, greater<pii> > RPQ;
#define mk make_pair
#define INF (1 << 30)
#define INFL (1ll << 60ll)
#define mod 1000000007

int N, a, b, ans, c;
string s;

signed main(){
    cin >> N;
    for(int i = 0; i < N; i++){
        cin >> s;
        if(s[0] == 'B' && s[(int)s.size() - 1] == 'A'){
            c++;
        }
        else if(s[0] == 'B'){
            b++;
        }
        else if(s[(int)s.size() - 1] == 'A'){
            a++;
        }
        for(int j = 1; j < (int)s.size(); j++){
            if(s[j] == 'B' && s[j - 1] == 'A'){
                ans++;
            }
        }
    }
    ans += min(c, min(b, a)) * 2;
    c -= min(c, min(b, a));
    a -= min(c, min(b, a));
    b -= min(c, min(b, a));

    cout << ans + min(c, b, a) << endl;

    return 0;
}
/*



*/

Compiler output:
In file included from /usr/include/c++/14/string:51,
                 from /usr/include/c++/14/bits/locale_classes.h:40,
                 from /usr/include/c++/14/bits/ios_base.h:41,
                 from /usr/include/c++/14/ios:44,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:2:
/usr/include/c++/14/bits/stl_algobase.h: In instantiation of 'constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare) [with _Tp = long long int; _Compare = long long int]':
a.cc:52:22:   required from here
   52 |     cout << ans + min(c, b, a) << endl;
      |                   ~~~^~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:284:17: error: '__comp' cannot be used as a function
  284 |       if (__comp(__b, __a))
      |           ~~~~~~^~~~~~~~~~
Language: C++

#include<iostream>
#include<stdio.h>
#include<vector>
#include<string>
using namespace std;

int main(void) {
	int n, sum = 0;
	cin >> n;
	vector<string> s(n);
	for (int i = 0; i < n; i++) cin >> s[i];
	for (int i = 0; i < n; i++) {
		if (s.find("AB") != string::npos{

			}
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:23: error: 'class std::vector<std::__cxx11::basic_string<char> >' has no member named 'find'
   13 |                 if (s.find("AB") != string::npos{
      |                       ^~~~
a.cc:13:49: error: expected ')' before '{' token
   13 |                 if (s.find("AB") != string::npos{
      |                    ~                            ^
      |                                                 )
a.cc:16:9: error: expected primary-expression before '}' token
   16 |         }
      |         ^
Language: C++

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <cstring>
#define ll long long
using namespace std;
template <class T>
inline void rd(T &x) {
	x=0; char c=getchar(); int f=1;
	while(!isdigit(c)) { if(c=='-') f=-1; c=getchar(); }
	while(isdigit(c)) x=x*10-'0'+c,c=getchar(); x*=f;
}
char str[22];
int n,ans;
set<int> ca,cb;
int main() {
	rd(n);
	for(int i=1;i<=n;++i) {
		scanf("%s",str+1); int len=strlen(str+1);
		for(int i=1;i<len;++i) ans+=str[i]=='A'&&str[i+1]=='B';
		int flga=0,flgb=0;
		int eb=0;
		if(str[1]=='B') {
			if(!ca.empty()) {
				int p=*ca.begin(); ca.erase(p);
				if(cb.count(p)) cb.erase(p),eb=p;
				ans++,flgb=1;
			}
		}
		if(str[len]=='A') {
			if(!cb.empty()) {
				int p=*cb.begin(); cb.erase(p);
				ans++,flga=1;
			}
		}
		if(str[1]=='B') {
			if(!flgb) cb.insert(i);
		}
		if(str[len]=='A') {
			if(!flga) ca.insert(i);
		}
		if(eb) cb.insert(eb); 
	}
	printf("%d\n",ans);
	return 0;
}


Compiler output:
a.cc:15:1: error: 'set' does not name a type
   15 | set<int> ca,cb;
      | ^~~
a.cc: In function 'int main()':
a.cc:24:29: error: 'ca' was not declared in this scope
   24 |                         if(!ca.empty()) {
      |                             ^~
a.cc:26:36: error: 'cb' was not declared in this scope; did you mean 'eb'?
   26 |                                 if(cb.count(p)) cb.erase(p),eb=p;
      |                                    ^~
      |                                    eb
a.cc:31:29: error: 'cb' was not declared in this scope; did you mean 'eb'?
   31 |                         if(!cb.empty()) {
      |                             ^~
      |                             eb
a.cc:37:35: error: 'cb' was not declared in this scope; did you mean 'eb'?
   37 |                         if(!flgb) cb.insert(i);
      |                                   ^~
      |                                   eb
a.cc:40:35: error: 'ca' was not declared in this scope
   40 |                         if(!flga) ca.insert(i);
      |                                   ^~
a.cc:42:24: error: 'cb' was not declared in this scope; did you mean 'eb'?
   42 |                 if(eb) cb.insert(eb);
      |                        ^~
      |                        eb
Language: Java

import java.io.BufferedReader;
import java.io.Closeable;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.StringTokenizer;

public class Main {
	
	public static void main(String[] args) throws IOException {
		try(final Scanner sc = new Scanner(System.in)){
			final int N = sc.nextInt();
			
			final String[] strs = new String[N];
			for(int i = 0; i < N; i++) {
				strs[i] = sc.next();
			}
			
			int count = 0;
			int BA = 0, _A = 0, B_ = 0;
			for(final String str : strs) {
				
				for(int i = 0; i < str.length(); i++) {
					if(str.startsWith("AB", i)) { count += 1; }
				}
				
				if(str.endsWith("A") && str.startsWith("B")) {
					BA += 1;
				}else if(str.endsWith("A")) {
					_A += 1;
				}else if(str.startsWith("B")) {
					B_ += 1;
				}
			}
			
			if(BA >= 1) {
				final int BA_ONLY = Math.max(0, BA - 1);
				if(B_ > 0 && _A > 0) {
					System.out.println(count + BA_ONLY + 2 + Math.min(_A - 1, B_ - 1));
				}else if(_A > 0) {
					System.out.println(count + BA_ONLY + 1 + Math.min(_A - 1, B_));
				}else if(_B > 0){
					System.out.println(count + BA_ONLY + 1 + Math.min(_A, B_ - 1));
				}else {
					System.out.println(count + BA_ONLY + 0 + Math.min(_A, B_));
				}
			}else {
				System.out.println(count + 0 + 0 + Math.min(_A, B_));
			}
		}
	}

	public static class Scanner implements Closeable {
		private BufferedReader br;
		private StringTokenizer tok;

		public Scanner(InputStream is) throws IOException {
			br = new BufferedReader(new InputStreamReader(is));
		}

		private void getLine() throws IOException {
			while(!hasNext()){
				tok = new StringTokenizer(br.readLine());
			}
		}

		private boolean hasNext() {
			return tok != null && tok.hasMoreTokens();
		}

		public String next() throws IOException {
			getLine();
			return tok.nextToken();
		}

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

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

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

		public int[] nextIntArray(int n) throws IOException {
			final int[] ret = new int[n];
			for(int i = 0; i < n; i++){
				ret[i] = this.nextInt();
			}
			return ret;
		}

		public long[] nextLongArray(int n) throws IOException {
			final long[] ret = new long[n];
			for(int i = 0; i < n; i++){
				ret[i] = this.nextLong();
			}
			return ret;
		}

		public void close() throws IOException {
			br.close();
		}
	}
}

Compiler output:
Main.java:44: error: cannot find symbol
				}else if(_B > 0){
				         ^
  symbol:   variable _B
  location: class Main
1 error
Language: C++

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

int main() {
    int n;
    cin >> n;
    string s[n];
    for (int i = 0; i < n; i++) cin >> s[i];
    ll ans = 0;
    ll r2 = 0, rA = 0, rB = 0;
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < s[i].size(); j++) {
            if (s[i][j] == 'A' && s[i][j + 1] == 'B') ans++;
        }
        if (s[i][0] == 'B' && s[i][s[i].size() - 1] == 'A') {
            r2++;
        } else if (s[i][0] == 'B' && s[i][s[i].size() - 1] != 'A') {
            rB++;
        } else if (s[i][0] != 'B' && s[i][s[i].size() - 1] == 'A') {
            rA++;
        }
    }
    ans += r2 - 1;
    ans += max(0, min(rA, rB));
    cout << ans << endl;
    return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:26:15: error: no matching function for call to 'max(int, const long long int&)'
   26 |     ans += max(0, min(rA, rB));
      |            ~~~^~~~~~~~~~~~~~~~
In file included from /usr/include/c++/14/algorithm:60,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:51,
                 from a.cc:1:
/usr/include/c++/14/bits/stl_algobase.h:257:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::max(const _Tp&, const _Tp&)'
  257 |     max(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:257:5: note:   template argument deduction/substitution failed:
a.cc:26:15: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   26 |     ans += max(0, min(rA, rB));
      |            ~~~^~~~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::max(const _Tp&, const _Tp&, _Compare)'
  303 |     max(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:303:5: note:   candidate expects 3 arguments, 2 provided
In file included from /usr/include/c++/14/algorithm:61:
/usr/include/c++/14/bits/stl_algo.h:5706:5: note: candidate: 'template<class _Tp> constexpr _Tp std::max(initializer_list<_Tp>)'
 5706 |     max(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5706:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5716:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::max(initializer_list<_Tp>, _Compare)'
 5716 |     max(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5716:5: note:   template argument deduction/substitution failed:
a.cc:26:15: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   26 |     ans += max(0, min(rA, rB));
      |            ~~~^~~~~~~~~~~~~~~~
Language: C++

#include <bits/stdc++.h>
#define itn int
#define rep(i, n) for (int i = 0; i < n; i++)

using namespace std;
typedef long long ll;


int main(){
    int n;
    int a=0;
    int b=0;
    int ab=0;
    int ans=0;
    rep(i,n){
        string st;
        cin >> st;
        if(st[0]=='B'){
            if(st.back()=='A'){
                ab++;
            }
            else{
                b++;
            }
        }
        else if(st.back()=='A'){
            a++;
        }
        bool aru = false;
        for(int j = 0; j < n; j++){
            if(aru==true){
                if(st[j]=='B'){
                    ans++;
                }
                aru=false;
            }
            if(st[j]=='A'){
                aru=true;
            }
            else{
                aru=false;
            }
        }
    }
    ans+=min(a,b);
    ans+=abs;
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:46:10: error: overloaded function with no contextual type information
   46 |     ans+=abs;
      |          ^~~
Language: C++

#include <bits/stdc++.h>
#define DEBUG false
#define coutd if(DEBUG) cout
#define debugf if(DEBUG) printf
#define ff first
#define ss second
#define sz(x) int(x.size())
#defihttps://atcoder.jp/contests/diverta2019/clarificationsne all(x) x.begin(), x.end()
#define FOR(i, x) for(int i=0; i<x; i++)
#define FOR1(i, x) for(int i=1; i<=x; i++)
#define REAP(i, x) for(int i=x-1; i>=0; i--)
#define REAP1(i, x) for(int i=x; i>0; i--)
using namespace std;
using ll = long long;
using ii = pair<int, int>;
using vi = vector<int>;
const double PI = acos(-1);
const double EPS = 1e-9;

int main(){
	ios_base::sync_with_stdio(0);
	int n;
	cin >> n;
	vector<string> vs(n);
	FOR(i, n) cin >> vs[i];
	int l=0; int r=0;
	ll ans=0;
	FOR(i, n){
		if(vs[i][0]=='B') l++;
		if(vs[i][sz(vs[i])-1]=='A') r++;
		for(int j=0; j<sz(vs[i])-1; j++){
			if(vs[i][j]=='A' && vs[i][j+1]=='B') ans++;
		}
	}
	coutd << "l:" << l << " r:" << r << endl;
	cout << ans+min(l,r) << endl;
}



Compiler output:
a.cc:8:2: error: invalid preprocessing directive #defihttps
    8 | #defihttps://atcoder.jp/contests/diverta2019/clarificationsne all(x) x.begin(), x.end()
      |  ^~~~~~~~~
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 ans = 0;
    int a = 0;
    int b = 0;
    for(int i = 0; i < n ;i++) {
      String s = sc.next();
      for(int i = 0; i < s.length() - 1; i++) {
        if((s.charAt(i) == 'A') && (s.charAt(i) == 'B')) ans++;
      }
      if(s.charAt(s.length() - 1) == 'A') {
        a++;
      } else if(s.charAt(s.length() - 1) == 'B') {
        b++;
      }
    }
    ans += (Math.min(a, b));
    System.out.println(ans);
  }
}


Compiler output:
Main.java:12: error: variable i is already defined in method main(String[])
      for(int i = 0; i < s.length() - 1; i++) {
              ^
1 error
Language: C++

#include <bits/stdc++.h>
#define itn int
#define rep(i, n) for (int i = 0; i < n; i++)

using namespace std;
typedef long long ll;


int main(){
    int n;
    int a=0;
    int b=0;
    int ab=0;
    int ans=0;
    rep(i,n){
        cin >> string;
        if(string[0]=='B'){
            if(string.back()=='A'){
                ab++;
            }
            else{
                b++;
            }
        }
        else if(string.back()=='A'){
            a++;
        }
        bool aru = false;
        for(int j = 0; j < n; j++){
            if(aru==true){
                if(string[j]=='B'){
                    ans++;
                }
                aru=false;
            }
            if(string[j]=='A'){
                aru=true;
            }
            else{
                aru=false;
            }
        }
    }
    ans+=min(a,b);
    ans+=abs;
    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:16:22: error: expected primary-expression before ';' token
   16 |         cin >> string;
      |                      ^
a.cc:17:18: error: expected unqualified-id before '[' token
   17 |         if(string[0]=='B'){
      |                  ^
a.cc:18:22: error: expected unqualified-id before '.' token
   18 |             if(string.back()=='A'){
      |                      ^
a.cc:25:23: error: expected unqualified-id before '.' token
   25 |         else if(string.back()=='A'){
      |                       ^
a.cc:31:26: error: expected unqualified-id before '[' token
   31 |                 if(string[j]=='B'){
      |                          ^
a.cc:36:22: error: expected unqualified-id before '[' token
   36 |             if(string[j]=='A'){
      |                      ^
a.cc:45:10: error: overloaded function with no contextual type information
   45 |     ans+=abs;
      |          ^~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int N,ans = 0,A = 0,B = 0;
	char s[15];
	cin>>N;
	for (int i = 1;i <= N; ++i)
	{
		cin>>s;
		char * s0 = s;
		if (*s0 == 'B') ++B;
		while (*(s0 + 1))
		{
			if (*s0 == 'A'&&*(s0 + 1) == 'B') ++ans;
			++s0;
		}
		if (*s0 == 'A') ++A;
	}
	ans += min(n - 1,min(A,B));
	cout<<ans;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:20:20: error: 'n' was not declared in this scope
   20 |         ans += min(n - 1,min(A,B));
      |                    ^
Language: C++

#define _USE_MATH_DEFINES
#include<bits/stdc++.h>
#define int long long
#define rep(i,n) for(int i=0;i<n;i++)
#define Rep(i,a,b) for(int i=0;i<b;i++)
#define REP(i,a,b) for(int i=0;i<=b;i++)
#define rev(i,n) for(int i=n-1;i>=0;i--)
#define vi vector<int>
#define vvi vector<vi>
#define pb push_back
#define pi pair<int,int>
#define vp vector<pair<int,int>>
#define mp make_pair
#define all(v) (v).begin(),(v).end()
#define fi first
#define se second
#define MEMSET(a) memset(a,0,sizeof(a))
#define inf (1ll<<60)
#define Yes(f) cout <<(f?"Yes":"No")<<endl//fが真の場合Yesを出力、偽の場合Noを出力
#define yes(f) cout <<(f?"yes":"no")<<endl
#define YES(f) cout <<(f?"YES":"NO")<<endl
#define SORT(v) sort(all(v))
#define RSORT(v) sort(all(v),greater<int>())

using namespace std;

const int mod=1e9+7;

signed main(){
    int n;
    cin >> n;
    vector<string> s(n);

    int ans=0;
    rep(i,n)
    {
        cin >> s[i];
        rep(j,s[i].size()-1)
        {
            if(s[i][j]=="A"&&s[i][j+1]=="B")ans++;
        }
    }

    int lasta,fib;
    lasta=fib=0;
    rep(i,n)
    {
        //if(s[i][0]=="A")fia++;
        if(s[i][n-1]=="A")lasta++;
        if(s[i][0]=="B")fib++;
        //if(s[i][n-1]=="B")lastb++;
    }


    ans+=min(lasta,fib);

    cout << ans << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:40:23: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   40 |             if(s[i][j]=="A"&&s[i][j+1]=="B")ans++;
a.cc:40:39: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   40 |             if(s[i][j]=="A"&&s[i][j+1]=="B")ans++;
a.cc:49:21: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   49 |         if(s[i][n-1]=="A")lasta++;
a.cc:50:19: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   50 |         if(s[i][0]=="B")fib++;
Language: Java

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        int n=sc.nextInt();
        String po[]=new String[n];
        int a=0,b=0;
        int ab=0;
        int ans=0;
        for(int i=0;i<n;i++){po[i]=sc.next();
        int leng=po[i].length();
        po[i]=po[i].replace("AB","");
        ans+=(leng-po[i].length())/2;
        leng=po[i].length();
            if(po[i].substring(0,1).equals("B"))b++;
            if(po[i].substring(leng-1,leng).equals("A"))a++;
            if(po[i].substring(0,1).equals("B")&&po[i].substring(leng-1,leng).equals("A"))ab++;
            
        }
        
        System.out.println(if(a==b)?ans+a-1:ans+Math.min(a,b));
    }
}


Compiler output:
Main.java:22: error: illegal start of expression
        System.out.println(if(a==b)?ans+a-1:ans+Math.min(a,b));
                           ^
Main.java:22: error: illegal start of expression
        System.out.println(if(a==b)?ans+a-1:ans+Math.min(a,b));
                                   ^
Main.java:22: error: ';' expected
        System.out.println(if(a==b)?ans+a-1:ans+Math.min(a,b));
                                                             ^
3 errors
Language: C++

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

int main(){
  int N;
  cin >> N;
  int ans=0;
  int A=0,B=0,BA=0;
  rep(i,N) {
    string s;
    cin >> s;
    rep(j,s.size()-1) if(s[j]=='A' and s[j+1]=='B') ans++;
    if (s[0]=='B') B++;
    if (s.back()=='A') A++;
    if (s[0]=='B' and s.back()=='A') BA++;
  }
  if(B==BA and A=BA) A--;
  cout << ans+min(A,B) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:19:12: error: lvalue required as left operand of assignment
   19 |   if(B==BA and A=BA) A--;
      |      ~~~~~~^~~~~
Language: C++

N = gets.to_i
S = N.times.map { gets.chomp }

ans = 0

S.each do |s|
  l = s.size

  0.upto(l - 2) do |i|
    ans += 1 if s[i..(i + 1)] == 'AB'
  end
end

acnt = S.count { |s| s[-1] == 'A' }
bcnt = S.count { |s| s[0] == 'B' }

ans += [acnt, bcnt].min

puts ans


Compiler output:
a.cc:10:34: warning: multi-character character constant [-Wmultichar]
   10 |     ans += 1 if s[i..(i + 1)] == 'AB'
      |                                  ^~~~
a.cc:1:1: error: 'N' does not name a type
    1 | N = gets.to_i
      | ^
a.cc:4:1: error: 'ans' does not name a type
    4 | ans = 0
      | ^~~
a.cc:15:1: error: 'bcnt' does not name a type
   15 | bcnt = S.count { |s| s[0] == 'B' }
      | ^~~~
a.cc:17:1: error: 'ans' does not name a type
   17 | ans += [acnt, bcnt].min
      | ^~~
Language: C++


#include <iostream>
#include <climits>
#include <stack>
#include <queue>
#include <string>
#include <utility>
#include <string.h>
#include <iomanip>
#include <stdlib.h>
#include <algorithm>
using namespace std;
typedef pair<int, int> P;
typedef long long ll;
const int INF = 100000000;
char maze[1001][1001];
int d[1001][1001];
bool pre[1001][1001];
int dx[4] = { 1,0,-1,0 };
int dy[4] = { 0,1,0,-1 };

#define REP(i, a,b) for(i=a;i<b;i++) 
#define REP1(i,b,a) for(i=b-1;i>=a;i--)
#define output(x) cout<<x<<endl;
#define pb(x) push_back(x);
const int MOD = 1000000007;


int main() {
	ll i, j, k, l, m, n, sum, flag, cc, M, X, N,Y,Z,K;
	cin >> N;
	char s[11];
	ll ans = 0;
	ll A, B, AB;
	A = B = AB = 0;
	REP(i, 0, N) {
		cin >> s;
		REP(j, 0, strlen(s)-1) {
			if (s[j] == 'A'&&s[j + 1] == 'B') {
				ans++;
			}
		}

		if (s[0] == 'B'&&s[strlen(s) - 1] == 'A') {
			AB++;
		}
		else if (s[0] == 'B') {
			B++;
		}
		else if (s[strlen(s) - 1] == 'A') {
			A++;
		}


	}
	if (A == B) {
		if (AB == 0) {
			output(ans + A);
		}
		else {
			output(ans + A + AB - 1);
		}
	}
	else {
		output(ans+fmin(A, B) + AB);
	}
	return 0;
}





Compiler output:
a.cc: In function 'int main()':
a.cc:65:28: error: 'fmin' was not declared in this scope
   65 |                 output(ans+fmin(A, B) + AB);
      |                            ^~~~
a.cc:24:25: note: in definition of macro 'output'
   24 | #define output(x) cout<<x<<endl;
      |                         ^
Language: C++

#include <bits/stdc++.h>
#define REP(i,n) for(int i=0;i<n;i++)
#define REPP(i,n) for(int i=1;i<=n;i++)
const double PI = acos(-1);
const double EPS = 1e-15;
long long INF=(long long)1E17;
#define i_7 (long long)(1E9+7)
long mod(long a){
    long long c=a%i_7;
    if(c>=0)return c;
    return c+i_7;
}
using namespace std;
bool prime(int n){
  if(n==1){
    return false;
  }else if(n==2){
    return true;
  }else{
    for(int i=2;i<=sqrt(n);i++){
      if(n%i==0){
        return false;
      }
    }
    return true;
  }
}

long long gcd(long long a, long long b){
  if(a<b){
    swap(a,b);
  }
  if(a%b==0){
    return b;
  }else{
    return gcd(b,a%b);
  }
}
 
long long lcm(long long x, long long y){
  return (x/gcd(x,y))*y;
}
 
class UnionFind {
    public:
    //各頂点の親の番号を格納する。その頂点自身が親だった場合は-(その集合のサイズ)を入れる。
    vector<int> Parent;
    
    //クラスを作るときは、Parentの値を全て-1にする。
    //以下のようにすると全てバラバラの頂点として解釈できる。
    UnionFind(int N) {
        Parent = vector<int>(N, -1);
    }
    
    //Aがどのグループに属しているか調べる
    int root(int A) {
        if (Parent[A] < 0) return A;
        return Parent[A] = root(Parent[A]);
    }
    
    //自分のいるグループの頂点数を調べる
    int size(int A) {
        return -Parent[root(A)];//先祖をrootで取っておきたい。
    }
    
    //AとBをくっ付ける
    bool connect(int A, int B) {
        //AとBを直接つなぐのではなく、root(A)にroot(B)をくっつける
        A = root(A);
        B = root(B);
        if (A == B) {
            //すでにくっついてるからくっ付けない
            return false;
        }
        
        //大きい方(A)に小さいほう(B)をくっ付けたい
        //大小が逆だったらAとBをひっくり返す。
        if (size(A) < size(B)) swap(A, B);
        
        //Aのサイズを更新する
        Parent[A] += Parent[B];
        //Bの親をAに変更する
        Parent[B] = A;
        
        return true;
    }
};

int main(){
  int n;
  cin>>n;
  vector<string> s(n);
  map<char,int> mp;
  int len;
  int ans=0;
  REP(i,n){
    cin>>s[i];
    len = s.size();
    REP(j,len-1){
      if(s[i][j]=='A' && s[i][j+1]=='B'){
        ans++;
      }
    }
    if(s[i][0]=='B'){
      map['B']++;
    }
    if(s[i][len-1]=='A'){
      map['A']++;
    }
  }
  ans += min(mp['A'],mp['B']);
  cout<<ans<<endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:105:11: error: expected identifier before 'B'
  105 |       map['B']++;
      |           ^~~
a.cc:105:11: error: expected ']' before 'B'
  105 |       map['B']++;
      |           ^~~
      |           ]
a.cc:105:10: error: empty structured binding declaration
  105 |       map['B']++;
      |          ^
a.cc:105:15: error: expected initializer before '++' token
  105 |       map['B']++;
      |               ^~
a.cc:108:11: error: expected identifier before 'A'
  108 |       map['A']++;
      |           ^~~
a.cc:108:11: error: expected ']' before 'A'
  108 |       map['A']++;
      |           ^~~
      |           ]
a.cc:108:10: error: empty structured binding declaration
  108 |       map['A']++;
      |          ^
a.cc:108:15: error: expected initializer before '++' token
  108 |       map['A']++;
      |               ^~
Language: C++

#include <iostream>
#include <string>

using namespace std;
int main(void){
  int n;
  cin >> n;
  
  int numAB = 0;
  int numLastA = 0;
  int numFirstB = 0;
  for(int i = 0; i < n; i ++){
    string str;
    cin >> str;
    
    numFirstB += (str[0] == 'B');
    numLastA += (str[str.size()-1] == 'A');
    
    for(int i = 0; i < str.size()-1; i ++){
      numAB += (str[i] == 'A' && str[i+1] == 'B');
    }
  }
  
  int result = numAB;
  if (numFirstB == n && numLastA == n) result += n-1;
  else (numFirstB < numLastA) result += numFirstB;
  else result += numLastA;
  
  printf("%d", result);
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:30: error: expected ';' before 'result'
   26 |   else (numFirstB < numLastA) result += numFirstB;
      |                              ^~~~~~~
      |                              ;
a.cc:27:3: error: 'else' without a previous 'if'
   27 |   else result += numLastA;
      |   ^~~~
Language: C++

from collections import defaultdict
import sys,heapq,bisect,math,itertools,string,queue,datetime
sys.setrecursionlimit(10**8)
INF = float('inf')
mod = 10**9+7
eps = 10**-7
def inpl(): return list(map(int, input().split()))
def inpl_str(): return list(input().split())

N = int(input())
ss = [input() for _ in range(N)]

ans = 0
fb = 0
la = 0
dottimo = 0
for s in ss:
    L = len(s)
    flag1 = flag2 = False
    for i in range(L-1):
        if s[i:i+2] == 'AB':
            ans += 1

    if s[0] == 'B':
        fb += 1
        flag1 = True

    if s[-1] == 'A':
        la += 1
        flag2 = True

    if flag1 and flag2:
        dottimo += 1

if fb == la and fb == dottimo:
    print(ans+dottimo-1)
else:
    print(ans+min(la,fb))


Compiler output:
a.cc:4:13: warning: multi-character character constant [-Wmultichar]
    4 | INF = float('inf')
      |             ^~~~~
a.cc:21:24: warning: multi-character character constant [-Wmultichar]
   21 |         if s[i:i+2] == 'AB':
      |                        ^~~~
a.cc:1:1: error: 'from' does not name a type
    1 | from collections import defaultdict
      | ^~~~
Language: C++

#include <algorithm>
#include <iostream>
#include <vector>
#include <math.h>
#include <set>
#include <map>
#include <string>
#include <stack>
#include <queue>
#include <iomanip>
#include <numeric>
#include <tuple>
#include <bitset>
#include <complex>
#include <unistd.h>
#include <cassert>
#include <cctype>
#include <random>
#include <time.h>
#define _USE_MATH_DEFINES
#define _GLIBCXX_DEBUG
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> plglg;
typedef pair<double, ll> pdlg;
typedef tuple<int, int, int> tiii;
typedef tuple<ll, ll, ll> tlglglg;
typedef tuple<double, double, double> tddd;
typedef complex<double> xy_t;
typedef vector<ll> vll;
typedef vector< vector<ll> > matrix;
#define REP(i, x, y) for(ll i = (ll)x; i < (ll)y; i++)
#define DREP(i, x, y, d) for(ll i = (ll)x; i < (ll)y; i += (ll)d)
#define PER(i, x, y) for(ll i = (ll)x; i > (ll)y; i--)
#define DPER(i, x, y, d) for(ll i = (ll)x; i > (ll)y; i -= (ll)d)
int dx[4] = {1, 0, -1, 0};
int dy[4] = {0, 1, 0, -1};
double pi = 3.141592653589793;
ll mod = 1000000007;
int intmax = 2147483647;
int intmin = -2147483648;
ll llmax = 9223372036854775807;
ll llmin = -9223372036854775807;
int iinf = intmax / 8;
ll inf = llmax / 8;
double eps = 1e-12;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll N;
    cin >> N;
    ll anum = 0;
    ll bnum = 0;
    ll ans = 0;
    ll num = 0;
    REP(i, 0, N) {
        string s;
        cin >> s;
        ll len = s.size();
        REP(j, 0, len - 1) {
            if (s[j] == 'A' && s[j + 1] == 'B') {
                ans++;
            }
        }
        if (s[0] == 'B') {
            bnum++;
        }
        if (s[len - 1] == 'A') {
            anum++;
        }
        if (s[0] == 'B' && s[len - 1] == 'A') {

Compiler output:
a.cc: In function 'int main()':
a.cc:73:48: error: expected '}' at end of input
   73 |         if (s[0] == 'B' && s[len - 1] == 'A') {
      |                                               ~^
a.cc:73:48: error: expected '}' at end of input
a.cc:58:18: note: to match this '{'
   58 |     REP(i, 0, N) {
      |                  ^
a.cc:73:48: error: expected '}' at end of input
   73 |         if (s[0] == 'B' && s[len - 1] == 'A') {
      |                                                ^
a.cc:49:12: note: to match this '{'
   49 | int main() {
      |            ^
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;

int main(){
  int N,countA=0,countB=0,ans=0;
  cin>>N;
  for(int i=0; i<N; ++i){
    string S;
    cin>>S;
    for(int j=0; j<S.size(); ++j){
      if(S.at(0)=="B") countB++;
      if(S.at(S.size()-1)=="A") countA++;
      if(S.at(j)=="A" && S.at(j+1)=="B") ans++;
    }
  }
  ans+=min(countA,countB);
  if(countA==N && countB==N) ans--;
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:17: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   13 |       if(S.at(0)=="B") countB++;
      |          ~~~~~~~^~~~~
a.cc:14:26: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   14 |       if(S.at(S.size()-1)=="A") countA++;
      |          ~~~~~~~~~~~~~~~~^~~~~
a.cc:15:17: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   15 |       if(S.at(j)=="A" && S.at(j+1)=="B") ans++;
      |          ~~~~~~~^~~~~
a.cc:15:35: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   15 |       if(S.at(j)=="A" && S.at(j+1)=="B") ans++;
      |                          ~~~~~~~~~^~~~~
Language: C++

#include<iostream>
#include<string>
#include<algorithm>
using namespace std;

int main(){
  int N,countA=0,countB=0,ans=0;
  cin>>N;
  for(int i=0; i<N; ++i){
    string S;
    cin>>S;
    for(int j=0; j<S.size(); ++j){
      if(S.at(0)==B) countB++;
      if(S.at(S.size()-1)==A) countA++;
      if(S.at(j)==A && S.at(j+1)==B) ans++;
    }
  }
  ans+=min(countA,countB);
  if(countA==N && countB==N) ans--;
  cout<<ans<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:13:19: error: 'B' was not declared in this scope
   13 |       if(S.at(0)==B) countB++;
      |                   ^
a.cc:14:28: error: 'A' was not declared in this scope
   14 |       if(S.at(S.size()-1)==A) countA++;
      |                            ^
a.cc:15:19: error: 'A' was not declared in this scope
   15 |       if(S.at(j)==A && S.at(j+1)==B) ans++;
      |                   ^
a.cc:15:35: error: 'B' was not declared in this scope
   15 |       if(S.at(j)==A && S.at(j+1)==B) ans++;
      |                                   ^
Language: C

main()
{
	register long long n,l,r,k,res=0;
	scanf("%lld",&n);
	for(l=1;l<=n;l=r+1)
		k=n/l,r=n/k,res+=(l<=r-1&&r*k==n)?(r-1):0;
	printf("%lld\n",res);
}

Compiler output:
main.c:1:1: error: return type defaults to 'int' [-Wimplicit-int]
    1 | main()
      | ^~~~
main.c: In function 'main':
main.c:4:9: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    4 |         scanf("%lld",&n);
      |         ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | main()
main.c:4:9: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    4 |         scanf("%lld",&n);
      |         ^~~~~
main.c:4:9: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:4:9: error: address of register variable 'n' requested
main.c:7:9: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    7 |         printf("%lld\n",res);
      |         ^~~~~~
main.c:7:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:7:9: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:7:9: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C++

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

int main() {
  long long N;
  cin >> N;
  long long count =0;
  for(int i=1; i<sqrt=(N); i++){
    long long syou = N/i;
    if(N%i==0 && syou>2)count += syou-1;
  }
  
  cout << count << endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:17: error: invalid operands of types 'int' and '<unresolved overloaded function type>' to binary 'operator<'
    8 |   for(int i=1; i<sqrt=(N); i++){
      |                ~^~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  long long x; cin >> x;
  long long ans = 0;
  for(long long i = 1; i*i <= x; ++i){
    if(x%i==0){
      if(x/i>)ans += x/i-1;
    }
  }
  cout << ans << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:14: error: expected primary-expression before ')' token
    8 |       if(x/i>)ans += x/i-1;
      |              ^