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

#include<stdio.h>
int main(){
	char text[100001];
	scanf("%s",text);
	int i,l=-1,a=0,b=0,ans;
	for(i=0;text[i]=='\0';i++){
		l++;
	}
	if(l%2==0){
		for(i=0;i<l/2;i++){
			if(text[i*2]!='1'){
				a++;
			}
			if(text[i*2+1]!='0'){
				a++;
			}
		for(i=0;i<l/2;i++){
			if(text[i*2]!='0'){
				b++;
			}
			if(text[i*2+1]!='1'){
				b++;
			}
		}
	}else{
		for(i=0;i<l/2+1;i++){
			if(text[i*2]!='1'){
				a++;
			}
			if(text[i*2+1]!='0'){
				a++;
			}
		for(i=0;i<l/2;i++){
			if(text[i*2]!='0'){
				b++;
			}
			if(text[i*2+1]!='1'){
				b++;
			}
	if(a<=b){
		ans=a;
	}else{
		ans=b;
	}
	printf("%d",ans);
	return 0;
}
	

Compiler output:
a.cc: In function 'int main()':
a.cc:25:10: error: expected '}' before 'else'
   25 |         }else{
      |          ^~~~
a.cc:9:19: note: to match this '{'
    9 |         if(l%2==0){
      |                   ^
a.cc:47:2: error: expected '}' at end of input
   47 | }
      |  ^
a.cc:26:37: note: to match this '{'
   26 |                 for(i=0;i<l/2+1;i++){
      |                                     ^
a.cc:47:2: error: expected '}' at end of input
   47 | }
      |  ^
a.cc:25:14: note: to match this '{'
   25 |         }else{
      |              ^
a.cc:47:2: error: expected '}' at end of input
   47 | }
      |  ^
a.cc:2:11: note: to match this '{'
    2 | int main(){
      |           ^
Language: C++

int main() {
	string str;
	getline(cin, str);
	int even = 0, odd = 0;
	for(int i = 0; i < str.size(); i++) {
		if(i % 2 == 0) {
			if(str[i] == '0') {
				even++;
			} else odd++;
		}
		else {
			if(str[i] == '0') {
				odd++;
			} else even++;
		}
	} cout << min(odd, even);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:9: error: 'string' was not declared in this scope
    2 |         string str;
      |         ^~~~~~
a.cc:3:17: error: 'cin' was not declared in this scope
    3 |         getline(cin, str);
      |                 ^~~
a.cc:3:22: error: 'str' was not declared in this scope; did you mean 'std'?
    3 |         getline(cin, str);
      |                      ^~~
      |                      std
a.cc:3:9: error: 'getline' was not declared in this scope
    3 |         getline(cin, str);
      |         ^~~~~~~
a.cc:16:11: error: 'cout' was not declared in this scope
   16 |         } cout << min(odd, even);
      |           ^~~~
a.cc:16:19: error: 'min' was not declared in this scope; did you mean 'main'?
   16 |         } cout << min(odd, even);
      |                   ^~~
      |                   main
Language: C++

#include <iostream>
#include <vector>
#include <string>

int main(){
  string S;
  cin >> S;
  
  int cnt1 = 0;
  int cnt2 = 0;
  for(int i = 1; i < S.size(); i++){
    char seed = '0';
    char c;
    c = S[i];
    if(seed == 0 && S[i] == 0){
      cnt1++;
      seed = 1;
    }else if(seed == 0 && S[i] == 1){
      seed = 1;
    }else if(seed == 1 && S[i] == 1){
      cnt1++;
      seed = 0;
    }else if(seed == 1 && S[i] == 0){
      seed = 0;
    }  
  }
  for(int i = 1; i < S.size(); i++){
    char seed = '1';
    char c;
    c = S[i];
    if(seed == 0 && S[i] == 0){
      cnt2++;
      seed = 1;
    }else if(seed == 0 && S[i] == 1){
      seed = 1;
    }else if(seed == 1 && S[i] == 1){
      cnt2++;
      seed = 0;
    }else if(seed == 1 && S[i] == 0){
      seed = 0;
    }  
  }
  cout << min(cnt1,cnt2);
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'string' was not declared in this scope
    6 |   string S;
      |   ^~~~~~
a.cc:6:3: note: suggested alternatives:
In file included from /usr/include/c++/14/iosfwd:41,
                 from /usr/include/c++/14/ios:40,
                 from /usr/include/c++/14/ostream:40,
                 from /usr/include/c++/14/iostream:41,
                 from a.cc:1:
/usr/include/c++/14/bits/stringfwd.h:77:33: note:   'std::string'
   77 |   typedef basic_string<char>    string;
      |                                 ^~~~~~
In file included 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:
/usr/include/c++/14/string:76:11: note:   'std::pmr::string'
   76 |     using string    = basic_string<char>;
      |           ^~~~~~
a.cc:7:3: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
    7 |   cin >> S;
      |   ^~~
      |   std::cin
/usr/include/c++/14/iostream:62:18: note: 'std::cin' declared here
   62 |   extern istream cin;           ///< Linked to standard input
      |                  ^~~
a.cc:7:10: error: 'S' was not declared in this scope
    7 |   cin >> S;
      |          ^
a.cc:43:3: error: 'cout' was not declared in this scope; did you mean 'std::cout'?
   43 |   cout << min(cnt1,cnt2);
      |   ^~~~
      |   std::cout
/usr/include/c++/14/iostream:63:18: note: 'std::cout' declared here
   63 |   extern ostream cout;          ///< Linked to standard output
      |                  ^~~~
a.cc:43:11: error: 'min' was not declared in this scope; did you mean 'std::min'?
   43 |   cout << min(cnt1,cnt2);
      |           ^~~
      |           std::min
In file included from /usr/include/c++/14/string:51:
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: 'std::min' declared here
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
Language: C++

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

//repetition
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i, n) for(int i = 0; i < (int)(n); i++)

//container util
#define all(x) (x).begin(),(x).end()

//typedef
typedef long long ll;
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<ll> VLL;
typedef vector<VLL> VVLL;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;


//conversion
inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}


int main(){
  string S;
  cin >> S;

  ll first0cnt = 0, first1cnt = 0;

  rep(i,S.size()){
    if(i % 2 == 0){
      if(s[i] == '0'){
        first1cnt++;
      }else{
        first0cnt++;
      }
    }else{
      if(s[i] == '0'){
        first0cnt++;
      }else{
        first1cnt++;
      }
    }
  }
  cout << min(first0cnt,first1cnt) << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:35:10: error: 's' was not declared in this scope
   35 |       if(s[i] == '0'){
      |          ^
a.cc:41:10: error: 's' was not declared in this scope
   41 |       if(s[i] == '0'){
      |          ^
Language: C

#include <stdio.h>
#include <string.h>

int main(){
  char s[100000] = {};
  int i, length, count0, count1;
  scanf("%s", s);
  length = strlen(s)
  
  for(i = 0; i < length; i++){
    if(i % 2 == 1){
      if(s[i] == '1') count1++;
      else count0++;
    }
    else{
      if(s[i] == '0') count0++;
      else count1++;
    }
  }
  return (count0 <= count1) ? count0 : count1;
}
	
      


Compiler output:
main.c: In function 'main':
main.c:8:21: error: expected ';' before 'for'
    8 |   length = strlen(s)
      |                     ^
      |                     ;
    9 | 
   10 |   for(i = 0; i < length; i++){
      |   ~~~
Language: C

#include <stdio.h>
#include <string.h>

int main(){
  char S[100000]; scanf("%s", &S);
  int length = strlen(S);
  /* int ans = sizeof(S); */
  int i, j, count, ans;

  for(i = 0; i < 2; i++){
    count = 0;
    for(j = 0; j < length; j++){
      if(j % 2 == 0 && S[j] != (char)(i + '0')) count++;
      if(j % 2 == 1 && S[j] == (char)(i + '0')) count++;
    }
    if(i == 0)ans = count;
  }

  ans = (ans < count ? ans : count)
  
  printf("%d\n", ans);

  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:19:36: error: expected ';' before 'printf'
   19 |   ans = (ans < count ? ans : count)
      |                                    ^
      |                                    ;
   20 | 
   21 |   printf("%d\n", ans);
      |   ~~~~~~
Language: C

#include <stdio.h>
#include <string.h>

int main(){
  char S[100000]; scanf("%s", &s);
  int length = strlen(S);
  /* int ans = sizeof(S); */
  int i, j;

  for(i = 0; i < 2; i++){
    int count = 0;
    for(j = 0; j < length; j++){
      if(j % 2 == 0 && S[j] != (char)(i + '0')) count++;
      if(j % 2 == 1 && S[j] == (char)(i + '0')) count++;
    }
  }

  printf("%d\n", count);

  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:5:32: error: 's' undeclared (first use in this function)
    5 |   char S[100000]; scanf("%s", &s);
      |                                ^
main.c:5:32: note: each undeclared identifier is reported only once for each function it appears in
main.c:18:18: error: 'count' undeclared (first use in this function)
   18 |   printf("%d\n", count);
      |                  ^~~~~
Language: C++

#include<iostream>
using namespace std;
int main () {
  char co[100001];
  for (int i = 0; i < N; i ++) cin >> co[i];
  int p = 0;
  int q = 0;
  for (int i = 0; i < N; i ++) {
    if (i % 2) {
      if (co[i] == '0') p ++;
      else q ++;
    }
    else {
      if (co[i] == '0') q ++;
      else p ++;
    }
  }
  cout << min(p, q) << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:5:23: error: 'N' was not declared in this scope
    5 |   for (int i = 0; i < N; i ++) cin >> co[i];
      |                       ^
a.cc:8:23: error: 'N' was not declared in this scope
    8 |   for (int i = 0; i < N; i ++) {
      |                       ^
Language: C++

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

int main(){
  string s;
  cin >> s;
  
  vector<char> restr1(s.size(),'1');
  for ( int i = 0; i < s.size();i++)if (i % 2 == 1) restr.at(i) == '0';
  vector<char> restr1(s.size(),'0');
  for ( int i = 0; i < s.size();i++)if (i % 2 == 1) restr.at(i) == '1';
  
  
  int ans0 = 0;
  for(int i = 0; i < s.size(); i++){
    if(s.at(i) != restr.at(i))ans0++;
  }
  
  int ans1 = 0;
  for(int i = 0; i < s.size(); i++){
    if(s.at(i) != restr.at(i))ans1++;
  }
  
  cout << min(ans0, ans1) << endl;
  
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:53: error: 'restr' was not declared in this scope; did you mean 'restr1'?
    9 |   for ( int i = 0; i < s.size();i++)if (i % 2 == 1) restr.at(i) == '0';
      |                                                     ^~~~~
      |                                                     restr1
a.cc:10:16: error: redeclaration of 'std::vector<char> restr1'
   10 |   vector<char> restr1(s.size(),'0');
      |                ^~~~~~
a.cc:8:16: note: 'std::vector<char> restr1' previously declared here
    8 |   vector<char> restr1(s.size(),'1');
      |                ^~~~~~
a.cc:11:53: error: 'restr' was not declared in this scope; did you mean 'restr1'?
   11 |   for ( int i = 0; i < s.size();i++)if (i % 2 == 1) restr.at(i) == '1';
      |                                                     ^~~~~
      |                                                     restr1
a.cc:16:19: error: 'restr' was not declared in this scope; did you mean 'restr1'?
   16 |     if(s.at(i) != restr.at(i))ans0++;
      |                   ^~~~~
      |                   restr1
a.cc:21:19: error: 'restr' was not declared in this scope; did you mean 'restr1'?
   21 |     if(s.at(i) != restr.at(i))ans1++;
      |                   ^~~~~
      |                   restr1
Language: C

#include <stdio.h>
int main() {
	char s[10001];
	scanf("%s", s);
	
	int cnt = 0;
	int zero_cnt = 0;
	int one_cnt = 0;
	while(1){
		if(s[cnt]==0||s[cnt]==1){
		}
		else{break;}
		
		if(cnt%2 == 0){
			if(s[cnt]==0&&s[cnt+1]==1){
				one_cnt += 2;
			}
			else if(s[cnt]==1&&s[cnt+1]==0){
				zero_cnt += 2;
			}
			else{
				one_cnt += 1;
				zero_cnt += 1;
			}
		}
		
	int min = zero_cnt>=one_cnt?one_cnt:zero_cnt;
	printf("%d", min);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:30:1: error: expected declaration or statement at end of input
   30 | }
      | ^
Language: C++

#include <stdio.h>
int main() {
	char s[10001];
	scanf("%s", s);
	
	int cnt = 0;
	int zero_cnt = 0;
	int one_cnt = 0;
	while(1){
		if(s[cnt]==0||s[cnt]==1){
		}
		else{break;}
		
		if(cnt%2 == 0){
			if(s[cnt]==0&&s[cnt+1]==1){
				one_cnt += 2;
			}
			else if(s[cnt]==1&&s[cnt+1]==0){
				zero_cnt += 2;
			}
			else{
				one_cnt += 1;
				zero_cnt += 1;
			}
		}
		
	int min = zero_cnt>=one_cnt?one_cnt:zero_cnt;
	printf("%d", min);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:2: error: expected '}' at end of input
   30 | }
      |  ^
a.cc:2:12: note: to match this '{'
    2 | int main() {
      |            ^
Language: C

#include <stdio.h>
#include <string.h>

int main(void){
    
    char s[100001];
    scanf("%s",s);
    int l=strlen(s);
    int a[l];
    int c1 = 0, c2 = 0;

    int i;

    for(i = 0; i < l;i++){
        if(i%2==0){
            if(s[i]=='0')   c1++;
        }
        else{
            if(s[i]=='1')   c1++;
        }
    }

    for(i = 0; i < l;i++){
        if(i%2==0){
            if(s[i]=='1')   c2++;
        }
        else{
            if(s[i]=='0')   c2++;
        }
    }

    int ans=0;
    if(c1 <= c2){
        ans = c1;
    else{
        ans = c2;
    }

    printf("%d",ans);

    return 0;

}

Compiler output:
main.c: In function 'main':
main.c:35:5: error: expected '}' before 'else'
   35 |     else{
      |     ^~~~
Language: C++

#include <stdio.h>
int main() {
	char s[10001];
	scanf("%s", s);
	
	int cnt = 0;
	int zero_cnt = 0;
	int one_cnt = 0;
	while(1){
		if(cnt%2 == 0){
			if(s[cnt]==0&&s[cnt+1]==1){
				one_cnt += 2;
			}
			else if(s[cnt]==1&&s[cnt+1]==0){
				zero_cnt += 2;
			}
			else{
				one_cnt += 1;
				zero_cnt += 1;
			}
		}
		else if(cnt%2 == 1){
			pass;
		}
		else{
			break;
		}
	int min = zero_cnt>=one_cnt?one_cnt:zero_cnt;
	printf("%d", min);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:25: error: 'pass' was not declared in this scope
   23 |                         pass;
      |                         ^~~~
a.cc:31:2: error: expected '}' at end of input
   31 | }
      |  ^
a.cc:2:12: note: to match this '{'
    2 | int main() {
      |            ^
Language: C

#include <stdio.h>

int main(void){
    
    char s[100001];
    scanf("%s",s);
    int l=strlen(s);
    int a[l];
    int c1 = 0, c2 = 0;

    int i;

    for(i = 0; i < l;i++){
        if(i%2==0){
            if(s[i]=='0')   c1++;
        }
        else{
            if(s[i]=='1')   c1++;
        }
    }

    for(i = 0; i < l;i++){
        if(i%2==0){
            if(s[i]=='1')   c2++;
        }
        else{
            if(s[i]=='0')   c2++;
        }
    }

    int ans=0;
    if(c1 <= c2){
        ans = c1;
    else{
        ans = c2;
    }

    printf("%d",ans);

    return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:11: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    7 |     int l=strlen(s);
      |           ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include <stdio.h>
  +++ |+#include <string.h>
    2 | 
main.c:7:11: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    7 |     int l=strlen(s);
      |           ^~~~~~
main.c:7:11: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:34:5: error: expected '}' before 'else'
   34 |     else{
      |     ^~~~
Language: C++

#include <stdio.h>
int main() {
	char s[10001];
	scanf("%s", s);
	
	int cnt = 0;
	int zero_cnt = 0;
	int one_cnt = 0;
	while(1){
		if(cnt%2 == 0){
			if(s[cnt]==0&&s[cnt+1]==1){
				one_cnt += 2;
			}
			else if(s[cnt]==1&&s[cnt+1]==0){
				zero_cnt += 2;
			}
			else{
				one_cnt += 1;
				zero_cnt += 1;
			}
		}
		else if(cnt%2 == 0){
			pass;
		}
		else{
			break;
		}
	int min = zero_cnt>=one_cnt?one_cnt:zero_cnt;
	printf("%d", min);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:25: error: 'pass' was not declared in this scope
   23 |                         pass;
      |                         ^~~~
a.cc:31:2: error: expected '}' at end of input
   31 | }
      |  ^
a.cc:2:12: note: to match this '{'
    2 | int main() {
      |            ^
Language: C

#include <stdio.h>

int main(void){
    
    char s[100001];
    scanf("%s",&s);
    int l=strlen(s);
    int a[l];
    int c1 = 0, c2 = 0;

    int i;

    for(i = 0; i < l;i++){
        if(i%2==0){
            if(s[i]=='0')   c1++;
        }
        else{
            if(s[i]=='1')   c1++;
        }
    }

    for(i = 0; i < l;i++){
        if(i%2==0){
            if(s[i]=='1')   c2++;
        }
        else{
            if(s[i]=='0')   c2++;
        }
    }

    int ans=0;
    if(c1 <= c2){
        ans = c1;
    else{
        ans = c2;
    }

    printf("%d",ans);

    return 0;

}

Compiler output:
main.c: In function 'main':
main.c:7:11: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
    7 |     int l=strlen(s);
      |           ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include <stdio.h>
  +++ |+#include <string.h>
    2 | 
main.c:7:11: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
    7 |     int l=strlen(s);
      |           ^~~~~~
main.c:7:11: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:34:5: error: expected '}' before 'else'
   34 |     else{
      |     ^~~~
Language: C++

#include <stdio.h>
int main() {
	char s[10001];
	scanf("%s", s);
	
	int cnt = 0;
	int zero_cnt = 0;
	int one_cnt = 0;
	while(1){
		if(cnt%2 == 0){
			if(s[cnt]==0&&s[cnt+1]==1){
				one_cnt += 2;
			}
			else if(s[cnt]==1&&s[cnt+1]==0){
				zero_cnt += 2;
			}
			else{
				one_cnt += 1;
				zero_cnt += 1;
			}
		}
		else if(cnt%2 == 0){
			pass;
		}
		else{
			break;
		}
	printf("%d", zero_cnt>=one_cnt?one_cnt:zero_cnt;)
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:23:25: error: 'pass' was not declared in this scope
   23 |                         pass;
      |                         ^~~~
a.cc:28:56: error: expected ')' before ';' token
   28 |         printf("%d", zero_cnt>=one_cnt?one_cnt:zero_cnt;)
      |               ~                                        ^
      |                                                        )
a.cc:28:57: error: expected primary-expression before ')' token
   28 |         printf("%d", zero_cnt>=one_cnt?one_cnt:zero_cnt;)
      |                                                         ^
a.cc:30:2: error: expected '}' at end of input
   30 | }
      |  ^
a.cc:2:12: note: to match this '{'
    2 | int main() {
      |            ^
Language: C++

#include <stdio.h>
int main() {
	char s[10001];
	scanf("%s", s);
	
	int cnt = 0;
	int zero_cnt = 0;
	int one_cnt = 0;
	while(1){
		if(cnt%2 == 0){
			if(s[cnt]==0&&s[cnt+1]==1){
				one_cnt += 2;
			}
			else if(s[cnt]==1&&s[cnt+1]==0){
				zero_cnt += 2;
			}
			else{
				one_cnt += 1;
				zero_cnt += 1;
			}
		else if(cnt%2 == 0){
			pass;
		}
		else{
			break;
		}
	printf("%d", zero_cnt>=one_cnt?one_cnt:zero_cnt;)
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:21:17: error: expected '}' before 'else'
   21 |                 else if(cnt%2 == 0){
      |                 ^~~~
a.cc:10:31: note: to match this '{'
   10 |                 if(cnt%2 == 0){
      |                               ^
a.cc:22:25: error: 'pass' was not declared in this scope
   22 |                         pass;
      |                         ^~~~
a.cc:27:56: error: expected ')' before ';' token
   27 |         printf("%d", zero_cnt>=one_cnt?one_cnt:zero_cnt;)
      |               ~                                        ^
      |                                                        )
a.cc:27:57: error: expected primary-expression before ')' token
   27 |         printf("%d", zero_cnt>=one_cnt?one_cnt:zero_cnt;)
      |                                                         ^
a.cc:29:2: error: expected '}' at end of input
   29 | }
      |  ^
a.cc:2:12: note: to match this '{'
    2 | int main() {
      |            ^
Language: C++

#include<stdio.h>
#include<string.h>
int main(void) {
	char s[], c[3] = "01";
	int ans = 0;
	scanf("%s", s);
	for (int i = 0;i < strlen(s);i++) {
		if (s[i] == c[i % 2]) {
			ans++;
		}
	}
	if (ans * 2 > strlen(s))ans = strlen(s) - ans;
	printf("%d\n", ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:4:14: error: storage size of 's' isn't known
    4 |         char s[], c[3] = "01";
      |              ^
Language: C++

#include<stdio.h>
#include<string.h>
int main(void) {
	char s[128], c[3] = "01";
	int ans = 0;
	scanf_s("%s", s, 128);
	for (int i = 0;i < strlen(s);i++) {
		if (s[i] == c[i % 2]) {
			ans++;
		}
	}
	if (ans * 2 > strlen(s))ans = strlen(s) - ans;
	printf("%d\n", ans);
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:9: error: 'scanf_s' was not declared in this scope; did you mean 'scanf'?
    6 |         scanf_s("%s", s, 128);
      |         ^~~~~~~
      |         scanf
Language: C++

#include <iostream>
#include <bitset>
#include <string>

using namespace std;

int main() {
  string s;
  cin >> s;

  int result1 = 0;
  int result2 = 0;

  for (int i = 0; i < s.size(); i++ ) {
    int bit1 = i % 2;
    int bit2 = (i+1) % 2;
    int s_int = stoi(s[i]);

    if (s[i] != bit1) {
      result1++;
    }

    if (s[i] != bit2) {
      result2++;
    }
  }

  if (result2 > result1) {
    cout << result1 << endl;
  } else {
    cout << result2 << endl;
  }

  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:17:21: error: no matching function for call to 'stoi(__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type&)'
   17 |     int s_int = stoi(s[i]);
      |                 ~~~~^~~~~~
In file included from /usr/include/c++/14/string:54,
                 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:1:
/usr/include/c++/14/bits/basic_string.h:4164:3: note: candidate: 'int std::__cxx11::stoi(const std::string&, std::size_t*, int)'
 4164 |   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
/usr/include/c++/14/bits/basic_string.h:4164:22: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const std::string&' {aka 'const std::__cxx11::basic_string<char>&'}
 4164 |   stoi(const string& __str, size_t* __idx = 0, int __base = 10)
      |        ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4432:3: note: candidate: 'int std::__cxx11::stoi(const std::wstring&, std::size_t*, int)'
 4432 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~
/usr/include/c++/14/bits/basic_string.h:4432:23: note:   no known conversion for argument 1 from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const std::wstring&' {aka 'const std::__cxx11::basic_string<wchar_t>&'}
 4432 |   stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |        ~~~~~~~~~~~~~~~^~~~~
Language: C++

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

  string s;
  cin>>s;
  int c1=0,c2=0;
  int ptr1=0;
  int ptr2=1;
  for(int i=0;i<n;i++){
  	if(ptr1 != s[i]-'0'){
    	c1++;
    }
    
    ptr1 = !ptr1;
    
    if(ptr2 != s[i]-'0'){
    	c2++;
    }
    
    ptr2!=ptr2;
  }
  
  cout<<min(c1,c2);
  
  
  
	
}

Compiler output:
a.cc: In function 'int main()':
a.cc:12:17: error: 'n' was not declared in this scope
   12 |   for(int i=0;i<n;i++){
      |                 ^
Language: Java

import java.util.*;

public class Main{

	public static void main(String[] args){
		Scanner sc =new Scanner(System.in);
		String tile = sc.next();
		//System.out.println("tile");
		String[] tilec = tile.split("");

		int counter1=0;
		int counter2=0;
		for(i=0;i=tilec.length;i++){
			if(i%2 == 0){
				if(tilec[i]=='0'){
					counter1++				}
			}else{
				if(tilec[i]=='1'){
					counter1++
				}
			}
		}

		for(i=0;i=tilec.length;i++){
			if(i%2 == 0){
				if(tilec[i]=='1'){
					counter1++				}
			}else{
				if(tilec[i]=='0'){
					counter1++
				}
			}
		}

		if(counter1 >= counter2){
			System.out.println(counter2);
		}else{
			System.out.println(counter1);
		}
	}
}

Compiler output:
Main.java:16: error: ';' expected
					counter1++				}
					          ^
Main.java:19: error: ';' expected
					counter1++
					          ^
Main.java:27: error: ';' expected
					counter1++				}
					          ^
Main.java:30: error: ';' expected
					counter1++
					          ^
4 errors
Language: C

#include <stdio.h>
 
#define MIN(a,b) (a<b)?(a):(b);
 
int main() {
    int zero_odd = 0, zero_even = 0, one_odd = 0, one_even = 0;
    char str[100001];
 
    scanf("%s", str);
 
    for (int i = 0; str[i] != '\0'; i++) {
        if (str[i] == '1') {
            if (i%2 == 0) {one_odd++;}
            else {one_even++;}
        } else {
            if (i%2 == 0) {zero_odd++;}
            else {zero_even++;}
        }
    }
 
    printf("%d", MIN(zero_odd, zero_even) + MIN(one_odd, one_even));
 
}

Compiler output:
main.c: In function 'main':
main.c:3:31: error: expected ')' before ';' token
    3 | #define MIN(a,b) (a<b)?(a):(b);
      |                               ^
main.c:21:18: note: in expansion of macro 'MIN'
   21 |     printf("%d", MIN(zero_odd, zero_even) + MIN(one_odd, one_even));
      |                  ^~~
main.c:21:11: note: to match this '('
   21 |     printf("%d", MIN(zero_odd, zero_even) + MIN(one_odd, one_even));
      |           ^
Language: C

#include<stdio.h>



int main() {


	int i, cnt = 0, cnt1 = 0, str;
	char s[100001];
	scanf_s("%s", s);
	for (i = 0; i < 100001; i++) {
		
		if (s[i] == '\0')str = i;
	}
	for (i = 0; i < str; i++) {
		if (i % 2 == 0) {
			if (s[i] == '0')cnt++;
		}
		else {
			if (s[i] == '1')cnt1++;
		}
	}
	if ((str - cnt - cnt1) > (str / 2))printf("%d", cnt + cnt1);
	else printf("%d", str - cnt1 - cnt);
	

	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:10:9: error: implicit declaration of function 'scanf_s'; did you mean 'scanf'? [-Wimplicit-function-declaration]
   10 |         scanf_s("%s", s);
      |         ^~~~~~~
      |         scanf
Language: C++

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

int main(){
    string S;
    int count =0;
    cin >> S;
    for(int i=0;i<S.size();++i){
        if(S.at(i)==0){
        　if(S.at(i+1)==0){
            ++count;
            S.at(i+1)=1;
        }
        }
        else if(S.at(i)==1){
            if(S.at(i+1)==1){
                ++count;
                S.at(i+1)=1;
            }
        }
    }
    cout << count <<endl;
}

Compiler output:
a.cc:10:9: error: extended character 　 is not valid in an identifier
   10 |         　if(S.at(i+1)==0){
      |         ^
a.cc: In function 'int main()':
a.cc:10:9: error: '\U00003000if' was not declared in this scope
   10 |         　if(S.at(i+1)==0){
      |         ^~~~
Language: C++

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

int main(){
    string S;
    int count =0;
    cin >> S;
    for(int i=0;i<S.size();++i){
        if(S.at(i)=="0"){
        　if(S.at(i+1)=="0"){
            ++count;
            S.at(i+1)=1;
        }
        }
        else if(S.at(i)=="1"){
            if(S.at(i+1)=="1"){
                ++count;
                S.at(i+1)=1;
            }
        }
    }
    cout << count <<endl;
}

Compiler output:
a.cc:10:9: error: extended character 　 is not valid in an identifier
   10 |         　if(S.at(i+1)=="0"){
      |         ^
a.cc: In function 'int main()':
a.cc:9:19: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
    9 |         if(S.at(i)=="0"){
      |            ~~~~~~~^~~~~
a.cc:10:23: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   10 |         　if(S.at(i+1)=="0"){
      |              ~~~~~~~~~^~~~~
a.cc:10:9: error: '\U00003000if' was not declared in this scope
   10 |         　if(S.at(i+1)=="0"){
      |         ^~~~
a.cc:15:24: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   15 |         else if(S.at(i)=="1"){
      |                 ~~~~~~~^~~~~
a.cc:16:25: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]
   16 |             if(S.at(i+1)=="1"){
      |                ~~~~~~~~~^~~~~
Language: C++

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

int main(){
  string s;
  cin>>s;
  int l=s.size();
  int a=0,b=0,c=0,d=0;
  for(int i=0;i<l;i++){
    if(i%2 == 0){
      if(s[i] == '0') a++:
      else b++;
    }
    else{
      if(s[i] == '0') c++;
      else d++;
    }
  }
  cout << min(a+d,b+c) << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:26: error: expected ';' before ':' token
   11 |       if(s[i] == '0') a++:
      |                          ^
      |                          ;
Language: C

#include <stdio.h>

int main(void){
  char tile[256];
  int num[256];
  int count = 0, i;
  scanf("%s", tile);
  for(i = 0; tile[i] == '\0'; i++){
    if(tile[i] == '0'){
      num[i] = 0;
    } else if(tile[i] == '1'){
      num[i] = 1;
    } else if(tile[i] == '\0'){
      num[i] = 10;
    } else{
      printf("0");
      return 0;
    }
  }
  i = 0;
  while(num[i] == 10){
    if(num[i-1] == 0 && num[i+1] == 0){
      num[i] = 1;
      count++;
    } else if(num[i-1] == 1 && num[i+1] == 1){
      num[i] = 0;
      count++;
    }
  }
      
  return 0;
  


Compiler output:
main.c: In function 'main':
main.c:31:3: error: expected declaration or statement at end of input
   31 |   return 0;
      |   ^~~~~~
Language: C

#include <stdio.h>

int main(void){
  char tile[256];
  int num[256];
  int count = 0;
  scanf("%s", tile);
  for(i = 0; tile[i] == '\0'; i++){
    if(tile[i] == '0'){
      num[i] = 0;
    } else if(tile[i] == '1'){
      num[i] = 1;
    } else if(tile[i] == '\0'){
      num[i] == 10;
    } else{
      printf("0");
      return 0;
    }
  }
  i = 0;
  while(num[i] == 10){
    if(num[i-1] == 0 && num[i+1] == 0){
      num[i] = 1;
      count++;
    } else(num[i-1] == 1 && num[i+1] == 1){
      num[i] = 0;
      count++;
    }
  }
      
  return 0;
  

Compiler output:
main.c: In function 'main':
main.c:8:7: error: 'i' undeclared (first use in this function)
    8 |   for(i = 0; tile[i] == '\0'; i++){
      |       ^
main.c:8:7: note: each undeclared identifier is reported only once for each function it appears in
main.c:25:43: error: expected ';' before '{' token
   25 |     } else(num[i-1] == 1 && num[i+1] == 1){
      |                                           ^
      |                                           ;
main.c:31:3: error: expected declaration or statement at end of input
   31 |   return 0;
      |   ^~~~~~
Language: C

#include<stdio.h>
int main(){
	char* s;
	int n=0;
	while(1){
		char c;
		if(scanf("%c",&c)==EOF)	break;
		s[n] = c;
		n++;
	}
	s[n+1] = '\0';
	int  i;
	char* g1,g2;
	for(i=0;i<n;i++){
		if(i%2==0){
			g1[i] = '0';
			g2[i] = '1';
		}else{
			g1[i] = '1';
			g2[i] = '0';
		}
	}
	g1[n] = g2[n] = '\0';
	int dif1,dif2;
	dif1=dif2=0;
	for(i=0;i<n;i++){
		char sub = s[i];
		if(sub!=g1[i])	dif1++;
		if(sub!=g2[i])	dif2++;
	}
	printf("%d\n",(dif1>dif2)?dif1:dif2);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:17:27: error: subscripted value is neither array nor pointer nor vector
   17 |                         g2[i] = '1';
      |                           ^
main.c:20:27: error: subscripted value is neither array nor pointer nor vector
   20 |                         g2[i] = '0';
      |                           ^
main.c:23:19: error: subscripted value is neither array nor pointer nor vector
   23 |         g1[n] = g2[n] = '\0';
      |                   ^
main.c:29:27: error: subscripted value is neither array nor pointer nor vector
   29 |                 if(sub!=g2[i])  dif2++;
      |                           ^
Language: C++

int main(){

  string str;
  cin >> str;
  int n = str.length();
  if (n <= 1) cout<< 0;
  int c1 = 0, c2 = 0;
  for(int i = 0; i < n; i++){
    if((int)str[i] - 48 != i%2) c1++;
    else c2++;
  }
  
  int ans = c1 < c2? c1 : c2;
  cout << ans;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:3:3: error: 'string' was not declared in this scope
    3 |   string str;
      |   ^~~~~~
a.cc:4:3: error: 'cin' was not declared in this scope
    4 |   cin >> str;
      |   ^~~
a.cc:4:10: error: 'str' was not declared in this scope; did you mean 'std'?
    4 |   cin >> str;
      |          ^~~
      |          std
a.cc:6:15: error: 'cout' was not declared in this scope
    6 |   if (n <= 1) cout<< 0;
      |               ^~~~
a.cc:14:3: error: 'cout' was not declared in this scope
   14 |   cout << ans;
      |   ^~~~
Language: C

#include<stdio.h>
int main(){
	char s*;
	int n=0;
	while(1){
		char c;
		if(scanf("%c",&c)==EOF)	break;
		s[n] = c;
		n++;
	}
	s[n+1] = '\0';
	int  i;
	char g1*,g2*;
	for(i=0;i<n;i++){
		if(i%2==0){
			g1[i] = '0';
			g2[i] = '1';
		}else{
			g1[i] = '1';
			g2[i] = '0';
		}
	}
	g1[n] = g2[n] = '\0';
	int dif1,dif2;
	dif1=dif2=0;
	for(i=0;i<n;i++){
		char sub = s[i];
		if(sub!=g1[i])	dif1++;
		if(sub!=g2[i])	dif2++;
	}
	printf("%d\n",(dif1>dif2)?dif1:dif2);
	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:3:15: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
    3 |         char s*;
      |               ^
main.c:3:16: error: expected expression before ';' token
    3 |         char s*;
      |                ^
main.c:8:17: error: 's' undeclared (first use in this function)
    8 |                 s[n] = c;
      |                 ^
main.c:8:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:13:16: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
   13 |         char g1*,g2*;
      |                ^
main.c:13:17: error: expected expression before ',' token
   13 |         char g1*,g2*;
      |                 ^
main.c:13:18: error: 'g2' undeclared (first use in this function)
   13 |         char g1*,g2*;
      |                  ^~
main.c:16:25: error: 'g1' undeclared (first use in this function)
   16 |                         g1[i] = '0';
      |                         ^~
Language: C++

#include <iostream>
#include <iomanip>
#include <string>
#include <map>
#include <math.h>
#include <vector>
#include <algorithm>
#include <cstdio>
#include <set>
#include <queue>
#include <sstream>
#include <stack>
#include <deque>
#include <memory.h>
#include <cassert>
#include <ctime>
#include <climits>
#include <list>
#include <time.h>
#include <unordered_map>
#include <bitset>
#include <exception>

using namespace std;


int main(){

  string str;
  cin >> str;
  int n = str.length();
  if (n <= 1) cout<< 0;
  int arr[n];
  for (int i = 0; i < n; i++){
    if(str[i] == '0'){
      arr[i] = 0;
    }
    else{
      arr[i] = 1;
    }
  }
  
  
  int str1[n], str2[n];
  for(int i = 0; i < n; i++){
    str1[i] = i%2;
    str2[i] = (1 - str1[i]);
  }
  
  //print
  /*
  for (int i = 0; i < n; i++){
    cout<<str1[i];
  }
  cout<<endl;
  for (int i = 0; i < n; i++){
    cout<<str2[i];
  }
  int c1 = 0, c2 = 0;
  for(int i = 0; i < n; i++){
    if(arr[i] != str1[i]) c1++;
    if(arr[i] != str2[i]) c2++;
  }*/
  
  int ans = c1 < c2? c1 : c2;
  cout << ans;
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:65:13: error: 'c1' was not declared in this scope; did you mean 'y1'?
   65 |   int ans = c1 < c2? c1 : c2;
      |             ^~
      |             y1
a.cc:65:18: error: 'c2' was not declared in this scope
   65 |   int ans = c1 < c2? c1 : c2;
      |                  ^~
Language: C

#include<stdio.h>
#include<string.h>

int count(char *s) {
	int l = strlen(s);
	int e0 = 0, o0 = 0, e1 = 0, o1 = 0;
	int c1, c2;
	for (int i = 0; i < l; i += 2) if (s[i] != '0') e0++;
	for (int i = 0; i < l; i += 2) if (s[i] != '1') e1++;
	for (int i = 1; i < l; i += 2) if (s[i] != '1') o1++;
	for (int i = 1; i < l; i += 2) if (s[i] != '0') o0++;

	c1 = e0 + o1;
	c2 = e1 + o0;

	if (c1 < c2) return c1;
	return c2;
}

int main(int argc, char **argv) {
	char buff[1024];

	int r = scanf("%s", buff);
	#printf("%d\n", count(buff));
	printf("%d", count(buff));
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:24:10: error: invalid preprocessing directive #printf
   24 |         #printf("%d\n", count(buff));
      |          ^~~~~~
Language: C++

#include "stdafx.h"
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;


int main()
{
	string S;
	cin >> S;

	int ans = S.size();

	for (int i = 0; i < 2; i++) {
		
		int cnt = 0;

		for (int j = 0; j < S.size(); j++) {
			// 0,2,4,...
			if (j % 2 == 0 && S[j] != (char)(i + '0')) cnt++;
			// 1,3,5,...
			if (j % 2 == 1 && S[j] == (char)(i + '0')) cnt++;
		}
		ans = min(ans, cnt);
	}
	cout << ans << endl;
}

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

#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i=0;i<n;i++)
signed main(){
	int s;
	cin>>s;
	int ans=0;
	for(int i=1;i<s.size();i++){
		if(s[i-1]==s[i]){
			ans++;
			if(s[i]==s[i+1]){
				if(s[i]==0)s[i]=1;
				else s[i]=0;
			}
		}
		else if(s[i]==s[i+1]){
			ans++;
			if(s[i]==0)s[i+1]=1;
			else s[i+1]=0;
		}
	}
	cout<<ans<<endl;
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:8:25: error: request for member 'size' in 's', which is of non-class type 'int'
    8 |         for(int i=1;i<s.size();i++){
      |                         ^~~~
a.cc:9:21: error: invalid types 'int[int]' for array subscript
    9 |                 if(s[i-1]==s[i]){
      |                     ^
a.cc:9:29: error: invalid types 'int[int]' for array subscript
    9 |                 if(s[i-1]==s[i]){
      |                             ^
a.cc:11:29: error: invalid types 'int[int]' for array subscript
   11 |                         if(s[i]==s[i+1]){
      |                             ^
a.cc:11:35: error: invalid types 'int[int]' for array subscript
   11 |                         if(s[i]==s[i+1]){
      |                                   ^
a.cc:12:37: error: invalid types 'int[int]' for array subscript
   12 |                                 if(s[i]==0)s[i]=1;
      |                                     ^
a.cc:12:45: error: invalid types 'int[int]' for array subscript
   12 |                                 if(s[i]==0)s[i]=1;
      |                                             ^
a.cc:13:39: error: invalid types 'int[int]' for array subscript
   13 |                                 else s[i]=0;
      |                                       ^
a.cc:16:26: error: invalid types 'int[int]' for array subscript
   16 |                 else if(s[i]==s[i+1]){
      |                          ^
a.cc:16:32: error: invalid types 'int[int]' for array subscript
   16 |                 else if(s[i]==s[i+1]){
      |                                ^
a.cc:18:29: error: invalid types 'int[int]' for array subscript
   18 |                         if(s[i]==0)s[i+1]=1;
      |                             ^
a.cc:18:37: error: invalid types 'int[int]' for array subscript
   18 |                         if(s[i]==0)s[i+1]=1;
      |                                     ^
a.cc:19:31: error: invalid types 'int[int]' for array subscript
   19 |                         else s[i+1]=0;
      |                               ^
Language: C++

int main(){
    string s;
    cin >> s;
    int a[4] = {0, 0, 0, 0};
    for(int i = 0; i < s.size(); i++){
        if(i % 2 == 0){
            if(s[i] == '0'){
                a[0]++;
            }else{
                a[1]++;
            }
        }else{
            if(s[i] == '0'){
                a[2]++;
            }else{
                a[3]++;
            }
        }
    }
    if(a[0] >= a[1] && a[2] <= a[3]){
        cout << s.size() -  a[0] - a[3];
    }
    else if(a[0] >= a[1] && a[2] >= a[3]){
        if(a[0] >= a[2]){
            cout << s.size() - a[0] - a[3];
        }else{
            cout << s.size() - a[1] - a[2];
        }
    }
    else if(a[0] <= a[1] && a[2] <= a[3]){
        if(a[1] >= a[3]){
            cout << s.size() - a[1] - a[2];
        }else{
            cout << s.size() - a[0] - a[3];
        }
    }
    else if(a[0] <= a[1] && a[2] >= a[3]){
        cout << s.size() -  a[1] - a[2];
    }
    
}

Compiler output:
a.cc: In function 'int main()':
a.cc:2:5: error: 'string' was not declared in this scope
    2 |     string s;
      |     ^~~~~~
a.cc:3:5: error: 'cin' was not declared in this scope
    3 |     cin >> s;
      |     ^~~
a.cc:3:12: error: 's' was not declared in this scope
    3 |     cin >> s;
      |            ^
a.cc:21:9: error: 'cout' was not declared in this scope
   21 |         cout << s.size() -  a[0] - a[3];
      |         ^~~~
a.cc:25:13: error: 'cout' was not declared in this scope
   25 |             cout << s.size() - a[0] - a[3];
      |             ^~~~
a.cc:27:13: error: 'cout' was not declared in this scope
   27 |             cout << s.size() - a[1] - a[2];
      |             ^~~~
a.cc:32:13: error: 'cout' was not declared in this scope
   32 |             cout << s.size() - a[1] - a[2];
      |             ^~~~
a.cc:34:13: error: 'cout' was not declared in this scope
   34 |             cout << s.size() - a[0] - a[3];
      |             ^~~~
a.cc:38:9: error: 'cout' was not declared in this scope
   38 |         cout << s.size() -  a[1] - a[2];
      |         ^~~~
Language: Java

import java.io.PrintWriter;
import java.util.*;

public class Solution {
    static Scanner sc = new Scanner(System.in);
    static PrintWriter out = new PrintWriter(System.out);
    public static void main(String[] args){
        char[] s = sc.next().toCharArray();
        int n = s.length;
        int[] black = new int[n], white = new int[n]; // black[i]: paint the i-th to be black
        // The i-th tile from the left is painted black if the i-th character of S
        // is 0, and painted white if that character is 1.
        black[0] = s[0]=='1'?1:0; white[0] = s[0]=='0'?1:0;
        for(int i=1;i<n;i++){
            if(s[i]=='0'){
                black[i] = white[i-1];
                white[i] = black[i-1]+1;
            } else{
                white[i] = black[i-1];
                black[i] = white[i-1]+1;
            }
        }
        System.out.println(Math.min(white[n-1],black[n-1]));
    }
}


Compiler output:
Main.java:4: error: class Solution is public, should be declared in a file named Solution.java
public class Solution {
       ^
1 error
Language: C++

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

int main(){
 string a;
  cin>>a;
  int c,d;
  c=0;
  d=a.size()
  for(int i=0;i<d;i++){
    if(i%2==0&&a[i]=='0'){
c++;
  }
    if(i%2==1&&a[i]=='1'){
      c++;
    }
  }
  c=min(c,d-c);
       cout<<c<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:13: error: expected ';' before 'for'
    9 |   d=a.size()
      |             ^
      |             ;
   10 |   for(int i=0;i<d;i++){
      |   ~~~        
a.cc:10:15: error: 'i' was not declared in this scope
   10 |   for(int i=0;i<d;i++){
      |               ^
Language: C++

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

int main(){
 string a;
  cin>>a;
  int c;
  c=0;
  for(int i=0;i<a.size();i++){
    if(i%2==0&&a[i]=='0'){
c++;
  }
    if(i%2==1&&a[i]=='1'){
      c++;
    }
  }
  c=min(c,a.size()-c);
       cout<<c<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:8: error: no matching function for call to 'min(int&, std::__cxx11::basic_string<char>::size_type)'
   17 |   c=min(c,a.size()-c);
      |     ~~~^~~~~~~~~~~~~~
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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:17:8: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   17 |   c=min(c,a.size()-c);
      |     ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: 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:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:17:8: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   17 |   c=min(c,a.size()-c);
      |     ~~~^~~~~~~~~~~~~~
Language: C++

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

int main(){
 string a;
  cin>>a;
  int c;
  c=0;
  for(int i=0;i<a.size();i++){
    if(i%2==0&&a[i]=='0'){
c++;
  }
    if(i%2==1&&a[i]=='1'){
      c++;
    }
  }
  c=min(c,a.size()-c)
       cout<<c<<endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:17:8: error: no matching function for call to 'min(int&, std::__cxx11::basic_string<char>::size_type)'
   17 |   c=min(c,a.size()-c)
      |     ~~~^~~~~~~~~~~~~~
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:233:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  233 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:233:5: note:   template argument deduction/substitution failed:
a.cc:17:8: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   17 |   c=min(c,a.size()-c)
      |     ~~~^~~~~~~~~~~~~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  281 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algobase.h:281:5: 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:5686:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(initializer_list<_Tp>)'
 5686 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5686:5: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/14/bits/stl_algo.h:5696:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(initializer_list<_Tp>, _Compare)'
 5696 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/14/bits/stl_algo.h:5696:5: note:   template argument deduction/substitution failed:
a.cc:17:8: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   17 |   c=min(c,a.size()-c)
      |     ~~~^~~~~~~~~~~~~~