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

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    string s;
    cin >> s;
    int K;
    cin >> K;
    int sLen = s.length()
    for (int i = 0; i < min(K, sLen); i++){
        if (s[i] != 1){
            cout << s[i] << endl;
            break;
        }
        else if (i == K-1){
            cout << 1 << endl;
            break;
        }
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:13:5: error: expected ',' or ';' before 'for'
   13 |     for (int i = 0; i < min(K, sLen); i++){
      |     ^~~
a.cc:13:21: error: 'i' was not declared in this scope
   13 |     for (int i = 0; i < min(K, sLen); i++){
      |                     ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define rep2(i, s, n) for (int i = (s); i < (int)(n); i++)
typedef long long ll;

int main() {
    string s;
    cin >> s;
    int K;
    cin >> K;
    for (int i = 0; i < min(K, s.length()); i++){
        if (s[i] != 1){
            cout << s[i] << endl;
            break;
        }
        else if (i == K-1){
            cout << 1 << endl;
            break;
        }
    }
}


Compiler output:
a.cc: In function 'int main()':
a.cc:12:28: error: no matching function for call to 'min(int&, std::__cxx11::basic_string<char>::size_type)'
   12 |     for (int i = 0; i < min(K, s.length()); i++){
      |                         ~~~^~~~~~~~~~~~~~~
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:12:28: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'})
   12 |     for (int i = 0; i < min(K, s.length()); i++){
      |                         ~~~^~~~~~~~~~~~~~~
/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:12:28: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   12 |     for (int i = 0; i < min(K, s.length()); i++){
      |                         ~~~^~~~~~~~~~~~~~~
Language: C++

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

signed main() {
  string S;
  cin >> S;
  long long int K;
  cin >> K;
  
  for( int i = 0; i < S.size(); i++ ){
    if( S[i] != '1' ){
      cout << S[i] << endl;
      return 0;
    }
  }
  cout << '1' << endl;
  return 0;
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:2:13: error: 'long long long' is too long for GCC
    2 | #define int long long
      |             ^~~~
a.cc:8:13: note: in expansion of macro 'int'
    8 |   long long int K;
      |             ^~~
a.cc:2:18: error: 'long long long' is too long for GCC
    2 | #define int long long
      |                  ^~~~
a.cc:8:13: note: in expansion of macro 'int'
    8 |   long long int K;
      |             ^~~
Language: C

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

int main(){
	char v[105];
	scanf("%s", v);
	int a = strlen(v);
	
	for(int i=0; i<a;i++){
		
	
	return 0;
	
}
		


Compiler output:
main.c: In function 'main':
main.c:14:1: error: expected declaration or statement at end of input
   14 | }
      | ^
Language: C

#include <stdio.h>

int main () {
    int c, d;
    long long int k;
    char S[100];
    d = 0;

    scanf("%s", S);
    scanf("%lli\n", &k);
    for (int i = 0 ; i < strlen(S) ; i++) {
        if (S[i] != 0)
            break;
        else
            d++;
    }
    if (d == strlen(S))
        printf("1\n");
    else
        printf("%c\n", S[i]);

    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:11:26: error: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
   11 |     for (int i = 0 ; i < strlen(S) ; i++) {
      |                          ^~~~~~
main.c:2:1: note: include '<string.h>' or provide a declaration of 'strlen'
    1 | #include <stdio.h>
  +++ |+#include <string.h>
    2 | 
main.c:11:26: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
   11 |     for (int i = 0 ; i < strlen(S) ; i++) {
      |                          ^~~~~~
main.c:11:26: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:17:14: warning: incompatible implicit declaration of built-in function 'strlen' [-Wbuiltin-declaration-mismatch]
   17 |     if (d == strlen(S))
      |              ^~~~~~
main.c:17:14: note: include '<string.h>' or provide a declaration of 'strlen'
main.c:20:26: error: 'i' undeclared (first use in this function)
   20 |         printf("%c\n", S[i]);
      |                          ^
main.c:20:26: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(){
	int s[101], k;
	for(i=0; i < 101; ++i)
		scanf("%d", &s[i]);
	
	scanf("%d", &k);
	
	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:5:13: error: 'i' undeclared (first use in this function)
    5 |         for(i=0; i < 101; ++i)
      |             ^
main.c:5:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include<bits/stdc++.h>
using namespace std;
const int mod = 1000000007;
#define rep(i, n) for(int i = 0; i < (n); i++)

int int_len(int n) {
  int s=0;
  while(n!=0) s++, n/=10;
  return s;
}

int int_sum(int n) {
  int m=0,s=0,a=n;
  while(a!=0) s++, a/=10;
  for(int i=s-1;i>=0;i--) m+=n/((int)pow(10,i))-(n/((int)pow(10,i+1)))*10;
  return m;
}






int gcd(int a,int b)
{
 
  int r, tmp;
 
  
 
  /* 自然数 a > b を確認・入替 */
  if(a<b){
    tmp = a;
    a = b;
    b = tmp;
  }
 
  /* ユークリッドの互除法 */
  r = a % b;
  while(r!=0){
    a = b;
    b = r;
    r = a % b;
  }
 
 
 
  return b;
}







int fac(int n){
  int m=1;
  while(n>=1) m*=n,n--;
  return m;
}

int vec_sum(vector<int> v){
  int n=0;
  for(int i=0;i<v.size();i++) n+=v[i];
  return n;
}
///////////////////////////
int main() {
  int n,k,i=0,cnt=0,ans;
  cin>>n>>k;
  while(i<n.size()){
    if(s[i]=='1'){
      cnt++;
    }else{
      ans=s[i];
      break;
    }
    i++;
  }
  if(k>=cnt){
    cout<<1<<endl;
  }else{
    cout<<ans<<endl;
  }
  
  
  
  
  
}
///////////////////////////



Compiler output:
a.cc: In function 'int main()':
a.cc:72:13: error: request for member 'size' in 'n', which is of non-class type 'int'
   72 |   while(i<n.size()){
      |             ^~~~
a.cc:73:8: error: 's' was not declared in this scope
   73 |     if(s[i]=='1'){
      |        ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii  = pair<int,int>;
const int INF=1001001001;
#define rep(i,n) for(int i=0; i<(n); i++)
#define rep2(i,x,n) for(int i=x; i<(n); i++)
#define MOD 1000000007
#define EPS 10e-8
int gcd(int a,int b){return b?gcd(b,a%b):a;}    //最大公約数
int lcm(int a, int b) {return a * b / gcd(a, b);}   //最小公倍数

int main(){
    string s;
    cin >> s;
    ll k;
    cin >> k;
    rep(i, min(s.length(),k))
    {
        if(s[i]!='1'){
            cout << s[i] << endl;
            return 0;
        }
    }
    cout << '1' << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:18:15: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, ll&)'
   18 |     rep(i, min(s.length(),k))
      |            ~~~^~~~~~~~~~~~~~
a.cc:6:34: note: in definition of macro 'rep'
    6 | #define rep(i,n) for(int i=0; i<(n); i++)
      |                                  ^
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:18:15: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'll' {aka 'long long int'})
   18 |     rep(i, min(s.length(),k))
      |            ~~~^~~~~~~~~~~~~~
a.cc:6:34: note: in definition of macro 'rep'
    6 | #define rep(i,n) for(int i=0; i<(n); i++)
      |                                  ^
/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:18:15: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   18 |     rep(i, min(s.length(),k))
      |            ~~~^~~~~~~~~~~~~~
a.cc:6:34: note: in definition of macro 'rep'
    6 | #define rep(i,n) for(int i=0; i<(n); i++)
      |                                  ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  
  string s;
  int64_t k;
  cin >> s >> k;
  
  bool jad = false;
  int a = 0;
  for(int i = 0 ; i < min(s.size() , k) ; i++){
    if(s.at(i) != '1'){
      jad = true;
      a = s.at(i);
      break;
    }
  }
  
  if(jad){
    cout << a << endl;
  }
  else{
    cout << 1 << endl;
  }
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:26: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, int64_t&)'
   11 |   for(int i = 0 ; i < min(s.size() , k) ; i++){
      |                       ~~~^~~~~~~~~~~~~~
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:11:26: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'int64_t' {aka 'long int'})
   11 |   for(int i = 0 ; i < min(s.size() , k) ; i++){
      |                       ~~~^~~~~~~~~~~~~~
/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:11:26: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   11 |   for(int i = 0 ; i < min(s.size() , k) ; i++){
      |                       ~~~^~~~~~~~~~~~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  
  string s;
  int_64t k;
  cin >> s >> k;
  
  bool jad = false;
  int a = 0;
  for(int i = 0 ; i < min(s.size() , k) ; i++){
    if(s.at(i) != '1'){
      jad = true;
      a = s.at(i);
      break;
    }
  }
  
  if(jad){
    cout << a << endl;
  }
  else{
    cout << 1 << endl;
  }
  
}


Compiler output:
a.cc: In function 'int main()':
a.cc:6:3: error: 'int_64t' was not declared in this scope; did you mean 'int64_t'?
    6 |   int_64t k;
      |   ^~~~~~~
      |   int64_t
a.cc:7:15: error: 'k' was not declared in this scope
    7 |   cin >> s >> k;
      |               ^
Language: C++

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

int strtoint(char a){
  string s = "0123456789";
  for(int i = 0;i < s.size();i++){
    if(a == s.at(i)){
      return i;
    }
  }
}

int main() {
  string s;
  long long k,c = 0;
  cin >> s >> k;
  if(s.at(0) == '1' && k != 1){
    for(int i = 1;i < s.size();i++){
      if(s.at(i) != '0' && s.at(i) != '1'){
        cout << s.at(i) << endl;
        return 0;
      }
  }
  else{
    cout << s.at(0) << endl;
  }
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:24:3: error: expected '}' before 'else'
   24 |   else{
      |   ^~~~
a.cc:17:31: note: to match this '{'
   17 |   if(s.at(0) == '1' && k != 1){
      |                               ^
a.cc: In function 'int strtoint(char)':
a.cc:11:1: warning: control reaches end of non-void function [-Wreturn-type]
   11 | }
      | ^
Language: C++

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

int strtoint(char a){
  string s = "0123456789";
  for(int i = 0;i < s.size();i++){
    if(a == s.at(i)){
      return i;
    }
  }
}

int main() {
  string s;
  long long k,c = 0;
  cin >> s >> k;
  if(s.at(0) == '1' && k != 1){
    for(int i = 1;i < s.size;i++){
      if(s.at(i) != '0' && s.at(i) != '1'){
        cout << s.at(i) << endl;
        return 0;
      }
  }
  else{
    cout << s.at(0) << endl;
  }
    
}


Compiler output:
a.cc: In function 'int main()':
a.cc:18:25: error: invalid use of member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]' (did you forget the '()' ?)
   18 |     for(int i = 1;i < s.size;i++){
      |                       ~~^~~~
      |                             ()
a.cc:24:3: error: expected '}' before 'else'
   24 |   else{
      |   ^~~~
a.cc:17:31: note: to match this '{'
   17 |   if(s.at(0) == '1' && k != 1){
      |                               ^
a.cc: In function 'int strtoint(char)':
a.cc:11:1: warning: control reaches end of non-void function [-Wreturn-type]
   11 | }
      | ^
Language: C++

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

int main() {
    stting s;
    ll k;
    cin>>s>>k;
    int i=0;
    while (i<s.size()-1&&i<k-1&&s[i]=='1')
        i++;
    cout<<s[i]<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'stting' was not declared in this scope; did you mean 'stdin'?
    6 |     stting s;
      |     ^~~~~~
      |     stdin
a.cc:8:10: error: 's' was not declared in this scope
    8 |     cin>>s>>k;
      |          ^
Language: C++

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

int main() {
    stting s;
    ll k;
    cin>>s>>k;
    int i=0;
    while (i<n-1&&i<k-1&&s[i]=='1')
        i++;
    cout<<s[i]<<endl;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'stting' was not declared in this scope; did you mean 'stdin'?
    6 |     stting s;
      |     ^~~~~~
      |     stdin
a.cc:8:10: error: 's' was not declared in this scope
    8 |     cin>>s>>k;
      |          ^
a.cc:10:14: error: 'n' was not declared in this scope
   10 |     while (i<n-1&&i<k-1&&s[i]=='1')
      |              ^
Language: C++

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define For(i,n,k) for(ll i=(n);i<(k);i++)
int n;
string s;
bool Main(){
    cin>>s>>n;
    For(i,0,n){
        if(s.at(i)!='1'){
            cout<<s.at(i)<<endl;
            return;
        }
    }
    cout<<1<<endl;
    return;
}
int main(){
    Main();
    return 0;
}

Compiler output:
a.cc: In function 'bool Main()':
a.cc:12:13: error: return-statement with no value, in function returning 'bool' [-fpermissive]
   12 |             return;
      |             ^~~~~~
a.cc:16:5: error: return-statement with no value, in function returning 'bool' [-fpermissive]
   16 |     return;
      |     ^~~~~~
Language: C++

#include <iostream>
#include <string>
#include <cstdlib>
int main()
{
    std::string S;
    long long K;
    std::cin >> S;
    std::cin >> K;

    int ans = 1;
    for (long long i = 0; i < S.length(); i++) {
        if (S[i] != '1') {
            ans = std::atoi(S[i]);
            break;
        }

        if (i >= K) {
            break;
        }
    }

    std::cout << ans << std::endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:28: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
   14 |             ans = std::atoi(S[i]);
      |                   ~~~~~~~~~^~~~~~
      |                            |
      |                            __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/c++/14/ext/string_conversions.h:43,
                 from /usr/include/c++/14/bits/basic_string.h:4154,
                 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/stdlib.h:105:30: note:   initializing argument 1 of 'int atoi(const char*)'
  105 | extern int atoi (const char *__nptr)
      |                  ~~~~~~~~~~~~^~~~~~
Language: C++

#include <iostream>
#include <string>

int main()
{
    std::string S;
    long long K;
    std::cin >> S;
    std::cin >> K;

    int ans = 1;
    for (long long i = 0; i < S.length(); i++) {
        if (S[i] != '1') {
            ans = std::stoll(S[i]);
            break;
        }

        if (i >= K) {
            break;
        }
    }

    std::cout << ans << std::endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:29: error: no matching function for call to 'stoll(__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type&)'
   14 |             ans = std::stoll(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:4180:3: note: candidate: 'long long int std::__cxx11::stoll(const std::string&, std::size_t*, int)'
 4180 |   stoll(const string& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~~
/usr/include/c++/14/bits/basic_string.h:4180:23: 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>&'}
 4180 |   stoll(const string& __str, size_t* __idx = 0, int __base = 10)
      |         ~~~~~~~~~~~~~~^~~~~
/usr/include/c++/14/bits/basic_string.h:4447:3: note: candidate: 'long long int std::__cxx11::stoll(const std::wstring&, std::size_t*, int)'
 4447 |   stoll(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |   ^~~~~
/usr/include/c++/14/bits/basic_string.h:4447:24: 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>&'}
 4447 |   stoll(const wstring& __str, size_t* __idx = 0, int __base = 10)
      |         ~~~~~~~~~~~~~~~^~~~~
Language: C++

#include <iostream>
#include <string>

int main()
{
    std::string S;
    long long K;
    std::cin >> S;
    std::cin >> K;

    int ans = 1;
    for (long long i = 0; i < S.length(); i++) {
        if (S[i] != '1') {
            ans = std::stoi(S[i]);
            break;
        }

        if (i >= K) {
            break;
        }
    }

    std::cout << ans << std::endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:14:28: error: no matching function for call to 'stoi(__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type&)'
   14 |             ans = std::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;int K; cin >>S>>K;
	char s; long long j = 1LL << 60;
    reverse(S.begin(),S.ens());
	for(int i = 0 ; i < S.size() ; i++){
		if(S[i] != '1'){
			s = S[i];
			j = i;
			break;
		}
	}
	if(K < j)cout << 1 << endl;
	else cout << s << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:25: error: 'std::string' {aka 'class std::__cxx11::basic_string<char>'} has no member named 'ens'; did you mean 'end'?
    7 |     reverse(S.begin(),S.ens());
      |                         ^~~
      |                         end
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
#define FOR(n) for(int i=0;i<n;i++)
#define FORJ(n) for(int j=0;j<n;j++)
#define PRN(n) printf("%d\n",n)
#define PRF(n) printf("%lf\n",n)
#define PRL(n) printf("%lld\n",n)
#define PRS(s) printf("%s\n",s)
#define PRC(c) printf("%c",c)
#define mod 1000000007
typedef long long int ll;
int u(const void *a, const void *b){
    return *(ll*)a-*(ll*)b;
}
int d(const void *a, const void *b){
    return *(ll*)b-*(ll*)a;
}
int z(int a){
  if(a<1)a*=-1;
  return a;
}
int min(int a,int b){
  if(a>b)return b;
  return a;
}
int max(int a,int b){
  if(a>b)return a;
  return b;
}
int gcd(int a,int b){
  if(!b)return a;
  return gcd(b,a%b);
}
ll c[100000];
int main(void){
  ll n;
  char s;
  scanf("%s %lld",s,&n);
  if(n==1){
    PRC(s[0]);
  }else{
    PRC(s[1]);
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:42:10: error: subscripted value is neither array nor pointer nor vector
   42 |     PRC(s[0]);
      |          ^
main.c:11:28: note: in definition of macro 'PRC'
   11 | #define PRC(c) printf("%c",c)
      |                            ^
main.c:44:10: error: subscripted value is neither array nor pointer nor vector
   44 |     PRC(s[1]);
      |          ^
main.c:11:28: note: in definition of macro 'PRC'
   11 | #define PRC(c) printf("%c",c)
      |                            ^
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() {
    string S;
    cin >> S;
    ll K; cin >> K;
    for(ll i, i < S.length() i++){
        if(S[i] != '1'){
            cout << S[i];
            return 0;
        }
    }
    cout << 1;
    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:16: error: expected ';' before '<' token
    9 |     for(ll i, i < S.length() i++){
      |                ^~
      |                ;
a.cc:9:17: error: expected primary-expression before '<' token
    9 |     for(ll i, i < S.length() i++){
      |                 ^
a.cc:9:29: error: expected ';' before 'i'
    9 |     for(ll i, i < S.length() i++){
      |                             ^~
      |                             ;
Language: C++

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

int main() {
  string s;
  int k;
  cin >> s >> k;
  
  bool ok = true;
  int keep;
  for(int i = 0; i < min(s.size(), k); i++){
    if(s.at(i) != 1){
      ok = false;
      keep = s.at(i);
      break;
    }
  }
  
  if(ok) cout << 1 << endl;
  else cout << keep << endl;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:11:25: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, int&)'
   11 |   for(int i = 0; i < min(s.size(), k); i++){
      |                      ~~~^~~~~~~~~~~~~
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:11:25: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'int')
   11 |   for(int i = 0; i < min(s.size(), k); i++){
      |                      ~~~^~~~~~~~~~~~~
/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:11:25: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   11 |   for(int i = 0; i < min(s.size(), k); i++){
      |                      ~~~^~~~~~~~~~~~~
Language: C++

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

int main() {
  string s;
  int k;
  cin >> s >> k;
  
  bool ok = true;
  int keep;
  for(int i = 0; i < min(s.size, k); i++){
    if(s.at(i) != 1){
      ok = false;
      keep = s.at(i);
      break;
    }
  }
  
  if(ok) cout << 1 << endl;
  else cout << keep << endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:11:28: error: invalid use of non-static member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
   11 |   for(int i = 0; i < min(s.size, k); i++){
      |                          ~~^~~~
In file included from /usr/include/c++/14/string:54,
                 from /usr/include/c++/14/bitset:52,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:52,
                 from a.cc:1:
/usr/include/c++/14/bits/basic_string.h:1076:7: note: declared here
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(void){
  
	string s;		cin >> s;
  	long long K;	cin >> K;
  	for(int i = 0 ; i < min(100 , K) ; i++){
      if(s[i] != '1'){
        cout << s[i] << endl;
        break;
      }
    }
  
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:32: error: no matching function for call to 'min(int, long long int&)'
    7 |         for(int i = 0 ; i < min(100 , K) ; i++){
      |                             ~~~^~~~~~~~~
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:7:32: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
    7 |         for(int i = 0 ; i < min(100 , K) ; i++){
      |                             ~~~^~~~~~~~~
/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:7:32: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
    7 |         for(int i = 0 ; i < min(100 , K) ; i++){
      |                             ~~~^~~~~~~~~
Language: C++

#define _GLIBCXX_DEBUG
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<bool> vb;
#define pb push_back
#define mp make_pair
#define f first
#define s second
#define in insert
#define FOR(i,a,b) for (int i = a; i < b; i++)
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define speed ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
const int INF = 1e9 + 5;
int main(){
    string s;
    cin >> s;
    ll k;
    cin >> k;
    char x = '1';
    for(int i = 0; i < k; i++) {
        if(s[i] != '1'){
            x = s[i];
            break;
        }
    }
    cout << q;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:30:13: error: 'q' was not declared in this scope
   30 |     cout << q;
      |             ^
Language: C++

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

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

    if (s[0] == '1' && s.size() != 1) cout << s[1] << endl;
    if (s[0] == '1' && s.size() == 1) cout << s[0] << endl;
    if (s[0] != '1') cout << s[0] << endl;

    return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:6:5: error: 'll' was not declared in this scope
    6 |     ll k;
      |     ^~
a.cc:7:17: error: 'k' was not declared in this scope
    7 |     cin >> s >> k;
      |                 ^
Language: C++

#include <bits/stdc++.h>using namespace std;int main() {string s;int64_t k;cin>>s>>k;for(int i=0;i<k;i++){if(s.at(i)!='1'){cout<<s.at(i);return 0;}}cout<<1;}

Compiler output:
a.cc:1:31: warning: extra tokens at end of #include directive
    1 | #include <bits/stdc++.h>using namespace std;int main() {string s;int64_t k;cin>>s>>k;for(int i=0;i<k;i++){if(s.at(i)!='1'){cout<<s.at(i);return 0;}}cout<<1;}
      |                               ^~~~~~~~~
a.cc:1:10: fatal error: bits/stdc++.h>usin: No such file or directory
    1 | #include <bits/stdc++.h>using namespace std;int main() {string s;int64_t k;cin>>s>>k;for(int i=0;i<k;i++){if(s.at(i)!='1'){cout<<s.at(i);return 0;}}cout<<1;}
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);
  string s;
  long long k;
  cin >> s >> k;
  for(int i = 0; i < min(s.length(), k); i++){
    if(s[i] != '1'){
      cout << s[i] << endl;
      return 0;
    }
  }
  cout << 1 << endl;
  return 0;
}


Compiler output:
a.cc: In function 'int main()':
a.cc:9:25: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, long long int&)'
    9 |   for(int i = 0; i < min(s.length(), k); i++){
      |                      ~~~^~~~~~~~~~~~~~~
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:9:25: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'long long int')
    9 |   for(int i = 0; i < min(s.length(), k); i++){
      |                      ~~~^~~~~~~~~~~~~~~
/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:9:25: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
    9 |   for(int i = 0; i < min(s.length(), k); i++){
      |                      ~~~^~~~~~~~~~~~~~~
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<bits/stdc++.h>
#include<cmath>
#include<bitset>
#define ll long long
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define FFOR(i,a,b) for(int i=(a);i<=(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define RREP(i,n)  FFOR(i,0,n)
#define SORT(V) sort((V).begin(),(V).end())
#define REVERSE(V) reverse((V).begin(),(V).end())
#define INF ((1LL<<62)-(1LL<<31))
#define MOD 1000000007
using namespace std;

int main(){
  string S;
  ll K,t=0;
  cin>>S>>K;
  bool CAN=true;
  for(ll i=0; i<min(S.size(),K); ++i){
    if(S.at(i)!='1'){
      CAN=false;
      break;
      t=S.at(i);
    }
  }
  if(CAN) cout<<1<<endl;
  else cout<<t<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:20: error: no matching function for call to 'min(std::__cxx11::basic_string<char>::size_type, long long int&)'
   24 |   for(ll i=0; i<min(S.size(),K); ++i){
      |                 ~~~^~~~~~~~~~~~
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: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:24:20: note:   deduced conflicting types for parameter 'const _Tp' ('long unsigned int' and 'long long int')
   24 |   for(ll i=0; i<min(S.size(),K); ++i){
      |                 ~~~^~~~~~~~~~~~
/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,
                 from a.cc:4:
/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:24:20: note:   mismatched types 'std::initializer_list<_Tp>' and 'long unsigned int'
   24 |   for(ll i=0; i<min(S.size(),K); ++i){
      |                 ~~~^~~~~~~~~~~~
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<bits/stdc++.h>
#include<cmath>
#include<bitset>
#define ll long long
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define FFOR(i,a,b) for(int i=(a);i<=(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define RREP(i,n)  FFOR(i,0,n)
#define SORT(V) sort((V).begin(),(V).end())
#define REVERSE(V) reverse((V).begin(),(V).end())
#define INF ((1LL<<62)-(1LL<<31))
#define MOD 1000000007
using namespace std;

int main(){
  string S;
  ll K,t=0;
  cin>>S>>K;
  bool CAN=true;
  for(ll i=0; i<min(S.size,K); ++i){
    if(S.at(i)!='1'){
      CAN=false;
      break;
      t=S.at(i);
    }
  }
  if(CAN) cout<<1<<endl;
  else cout<<t<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:23: error: invalid use of non-static member function 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size_type std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::size() const [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>; size_type = long unsigned int]'
   24 |   for(ll i=0; i<min(S.size,K); ++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:1076:7: note: declared here
 1076 |       size() const _GLIBCXX_NOEXCEPT
      |       ^~~~
Language: C++

#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<bits/stdc++.h>
#include<cmath>
#include<bitset>
#define ll long long
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define FFOR(i,a,b) for(int i=(a);i<=(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define RREP(i,n)  FFOR(i,0,n)
#define SORT(V) sort((V).begin(),(V).end())
#define REVERSE(V) reverse((V).begin(),(V).end())
#define INF ((1LL<<62)-(1LL<<31))
#define MOD 1000000007
using namespace std;

int main(){
  string S;
  ll K,t=0;
  cin>>S>>K;
  bool CAN=true;
  for(ll i=0;,i<K; ++i){
    if(S.at(i)!='1'){
      CAN=false;
      break;
      t=S.at(i);
    }
  }
  if(CAN) cout<<1<<endl;
  else cout<<t<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:24:14: error: expected primary-expression before ',' token
   24 |   for(ll i=0;,i<K; ++i){
      |              ^
Language: C++

#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <cmath>
#include <map>
#include <queue>
#include <random>
#include <iomanip>

typedef ll long long
typedef ull unsigned long long

int main() {
	std::string s;
	ll k;
	int ans = 0;
	bool b = false;
	std::cin >> s >> k;

	for (int i = 0; i < k; ++i) {
		if (s[i] != '1') {
			ans = i;
			b = true;
		}
	}
	if (b) {
		std::cout << s[ans] << std::endl;
	}
	else {
		std::cout << 1 << std::endl;
	}
}

Compiler output:
a.cc:11:9: error: 'll' does not name a type
   11 | typedef ll long long
      |         ^~
Language: C

#include <stdio.h>

int main(void){
  	double check,num=0;
	char hList[100];
  	double hListData[100];
  	scanf("%s",hList);
  	scanf("%lf",&check);
  	for(i=0;i<100;i++){
    	if(hList[i]==1){
          hListData[i] = 1;
        }else{
       		hListData[i] = hList[i]*1000000000000 +1;
        }
      num += hListData[i];
      if(num>=check){
      	printf("%d\n",hList[i]);
        break;
      }
    }

	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:13: error: 'i' undeclared (first use in this function)
    9 |         for(i=0;i<100;i++){
      |             ^
main.c:9:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(void){
  	long check,num=0;
	char hList[100];
  	long hListData[100];
  	scanf("%s",hList);
  	scanf("%lf",&check);
  	for(i=0;i<100;i++){
    	if(hList[i]==1){
          hListData[i] = 1;
        }else{
       		hListData[i] = hList[i]*1000000000000 +1;
        }
      num += hListData[i];
      if(num>=check){
      	printf("%d\n",hList[i]);
        break;
      }
    }

	return 0;
}


Compiler output:
main.c: In function 'main':
main.c:9:13: error: 'i' undeclared (first use in this function)
    9 |         for(i=0;i<100;i++){
      |             ^
main.c:9:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>

int main(void){
  	long check,num=0;
	char hList[100];
  	long hListData[100];
  	scanf("%s",hList);
  	scanf("%d",&check);
  	for(i=0;i<100;i++){
    	if(hList[i]==1){
          hListData[i] = 1;
        }else{
       		hListData[i] = hList[i]*1000000000000 +1;
        }
      num += hListData[i];
      if(num>=check){
      	printf("%d\n",hList[i]);
        break;
      }
    }

	return 0;
}

Compiler output:
main.c: In function 'main':
main.c:9:13: error: 'i' undeclared (first use in this function)
    9 |         for(i=0;i<100;i++){
      |             ^
main.c:9:13: note: each undeclared identifier is reported only once for each function it appears in
Language: C++

#include <bits/stdc++.h>

using namespace std;

int main(){
 long long int N;
  char T[10000];
  cin >> T;
  for(long long int i=0;i<strlen(T);i++){
    if(T[i]=='1')continue;
    else {
      cout << 2;
      break;
  }
   if(i==strlen(T)-1)cout <<1;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:16:2: error: expected '}' at end of input
   16 | }
      |  ^
a.cc:5:11: note: to match this '{'
    5 | int main(){
      |           ^
Language: C++

#include<iostream>
using namespace std;
int main()
{
  string s;
  cin >> s;
  int n;
  cin >> n;
  if((s[i]-'0')!=1)
  {
	cout<<s[2]<<endl;
  }
  else
  {
    cout<<s[0]<<endl;
  }
  return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:9:9: error: 'i' was not declared in this scope
    9 |   if((s[i]-'0')!=1)
      |         ^
Language: C++

      #include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll power(ll a,ll b){
  ll ans=1;
  for(ll i=1;i<=b;i++){
ans*=a;
  }
  return ans;
}

int main(){
string S;
  cin>>S;
  ll K;
  cin>>K;
  
  for(ll i=0;i<S.size();i++){
    if(S[i]=='1'){
      K--;
       
    if(K<=0){
      cout<<S[i]<<endl;
      break;
    }
    }

    else{
   
       
    if(K<=(S[i]-'0')*5*power(10,15);){
      cout<<S[i]<<endl;
      break;
    }
    }
   
  }

}


      
    


Compiler output:
a.cc: In function 'int main()':
a.cc:31:37: error: expected primary-expression before ')' token
   31 |     if(K<=(S[i]-'0')*5*power(10,15);){
      |                                     ^
Language: C++

#include<bits/stdc++.h>
using namespace std;
int main(){
  string S;
  long long int K;
  for(long long int i=0;i<K;i++){
    if (atoi(S[i])!=1){
      cout<<S[i]<<endl;
      return 0;
    }
  }
  cout<<1<<endl;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:7:13: error: invalid conversion from '__gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type' {aka 'char'} to 'const char*' [-fpermissive]
    7 |     if (atoi(S[i])!=1){
      |         ~~~~^~~~~~
      |             |
      |             __gnu_cxx::__alloc_traits<std::allocator<char>, char>::value_type {aka char}
In file included from /usr/include/c++/14/cstdlib:79,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:42,
                 from a.cc:1:
/usr/include/stdlib.h:105:30: note:   initializing argument 1 of 'int atoi(const char*)'
  105 | extern int atoi (const char *__nptr)
      |                  ~~~~~~~~~~~~^~~~~~