Language: C++

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

string A, B;
int chk = 1, left[2019], right[2019], leftnum[2019], rightnum[2019];

int main(){
	cin >> A >> B;
	int n = A.size();
	for(int i=0; i<n; i++){
		if(B[i] == '1') chk = 0;
	}
	if(chk == 1){
		int chk2 = 1;
		for(int i=0; i<n; i++){
			if(A[i] == '1') chk2 = 0;
		}
		if(chk2 == 1) cout << 0 << endl;
		else cout << -1 << endl;
	}else{
		for(int i=0; i<n; i++){
			int f1 = 1, f2 = 1;
			for(int j=0; j<n; j++){
				int p1 = (i<j)?j-i:i-j;
				if(B[p1] == '1' && f1 == 1){
					left[i] = j;
					leftnum[j]++;
					f1 = 0;
				}
				int p2 = (i+j)%n;
				if(B[p2] == '1' && f2 == 1){
					right[i] = j;
					rightnum[i]++;
					f2 = 0;
				}
			}
		}
		vector<int> rightmax(n);
		for(int i=0; i<n; i++){
			for(int j=0)
		}
		for(int i=0; i<n; i++){
			int dif = 0;
			vector<int> arr;
			for(int j=0; j<n; j++){
				if(A[(j+i)%n] != B[j]) dif++;
				if(A[(j+i)%n] == '1' && B[j] == '0') arr.push_back(j+i);
			}
			for(int j=0; j<arr.size(); j++){
				if(left[arr[j]] <= i){
					
				}
			}
		}
	}
	return 0;
}

Compiler output:
a.cc: In function 'int main()':
a.cc:26:41: error: reference to 'left' is ambiguous
   26 |                                         left[i] = j;
      |                                         ^~~~
In file included from /usr/include/c++/14/streambuf:43,
                 from /usr/include/c++/14/bits/streambuf_iterator.h:35,
                 from /usr/include/c++/14/iterator:66,
                 from /usr/include/x86_64-linux-gnu/c++/14/bits/stdc++.h:54,
                 from a.cc:1:
/usr/include/c++/14/bits/ios_base.h:1062:3: note: candidates are: 'std::ios_base& std::left(ios_base&)'
 1062 |   left(ios_base& __base)
      |   ^~~~
a.cc:5:14: note:                 'int left [2019]'
    5 | int chk = 1, left[2019], right[2019], leftnum[2019], rightnum[2019];
      |              ^~~~
a.cc:32:41: error: reference to 'right' is ambiguous
   32 |                                         right[i] = j;
      |                                         ^~~~~
/usr/include/c++/14/bits/ios_base.h:1070:3: note: candidates are: 'std::ios_base& std::right(ios_base&)'
 1070 |   right(ios_base& __base)
      |   ^~~~~
a.cc:5:26: note:                 'int right [2019]'
    5 | int chk = 1, left[2019], right[2019], leftnum[2019], rightnum[2019];
      |                          ^~~~~
a.cc:40:36: error: expected ';' before ')' token
   40 |                         for(int j=0)
      |                                    ^
      |                                    ;
a.cc:40:36: error: expected primary-expression before ')' token
a.cc:40:36: error: expected ';' before ')' token
   40 |                         for(int j=0)
      |                                    ^
      |                                    ;
a.cc:41:17: error: expected primary-expression before '}' token
   41 |                 }
      |                 ^
a.cc:50:36: error: reference to 'left' is ambiguous
   50 |                                 if(left[arr[j]] <= i){
      |                                    ^~~~
/usr/include/c++/14/bits/ios_base.h:1062:3: note: candidates are: 'std::ios_base& std::left(ios_base&)'
 1062 |   left(ios_base& __base)
      |   ^~~~
a.cc:5:14: note:                 'int left [2019]'
    5 | int chk = 1, left[2019], right[2019], leftnum[2019], rightnum[2019];
      |              ^~~~