Language: C++

#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#define Inf 10000000
using namespace std;



int SolveRight(int n, const bitset<4444>& A, const bitset<4444>& B, int targets) {
    
    // (A^BB)
    // ((A>>s)&(A^BB))
    
    bitset<4444> diff = (A^B);
    
    bitset<4444> AA = ((A<<n) | A);
    
    
    int ans = 0;
    for(int s=0;s<n;s++) {
        const bitset<4444>& tmp = ((AA>>s)&diff);
        
        ans += tmp.count();
        
        diff ^= tmp;
        if (diff.count() == 0) {
            return ans + min((s-targets+n)%n, (targets-s+n)%n);
        }
        ans++;
        
    }
    return Inf;
}

int SolveLeft(int n, const bitset<4444>& A, const bitset<4444>& B, int targets) {
    
    // (A^BB)
    // ((A>>s)&(A^BB))
    
    bitset<4444> diff = ((A^B)<<n);
    
    bitset<4444> AA = ((A<<n) | A);
    
    
    int ans = 0;
    for(int s=0;s<n;s++) {
        const bitset<4444>& tmp = ((AA<<s)&diff);
        
        ans += tmp.count();
        
        diff ^= tmp;
        if (diff.count() == 0) {
            return ans + min((s-targets+n)%n, (targets-s+n)%n);
        }
        ans++;

    }
    return Inf;
}




int main() {
    
    
    
    string Bs,As;
    cin>>Bs>>As;
    int n=As.size();
    bitset<4444> A;
    A.reset();
    
    for(int j=0;j<n;j++)
    {
        
        if (As[j]=='1') {
            A.set(j);
        }
    }
    
    int ans = Inf;
    for(int s0=0;s0<n;s0++) {
        
        bitset<4444> B;
        B.reset();
        for(int j=0;j<Bs.size();j++)
        {
            
            if (Bs[j]=='1') {
                B.set((j+s0)%n);
            }


            
        }
        ans = min(ans, SolveRight(n, A, B, n-s0));
        ans = min(ans, SolveLeft(n, A, B, n-s0));
        
        
    }
    
    if (ans >= Inf)
        cout << -1 << endl;
    else
        cout << ans << endl;
    
    
    
    
}

Compiler output:
a.cc:11:29: error: 'bitset' does not name a type
   11 | int SolveRight(int n, const bitset<4444>& A, const bitset<4444>& B, int targets) {
      |                             ^~~~~~
a.cc:11:35: error: expected ',' or '...' before '<' token
   11 | int SolveRight(int n, const bitset<4444>& A, const bitset<4444>& B, int targets) {
      |                                   ^
a.cc: In function 'int SolveRight(int, int)':
a.cc:16:5: error: 'bitset' was not declared in this scope
   16 |     bitset<4444> diff = (A^B);
      |     ^~~~~~
a.cc:6:1: note: 'std::bitset' is defined in header '<bitset>'; this is probably fixable by adding '#include <bitset>'
    5 | #include <map>
  +++ |+#include <bitset>
    6 | #define Inf 10000000
a.cc:16:18: error: 'diff' was not declared in this scope
   16 |     bitset<4444> diff = (A^B);
      |                  ^~~~
a.cc:16:26: error: 'A' was not declared in this scope
   16 |     bitset<4444> diff = (A^B);
      |                          ^
a.cc:16:28: error: 'B' was not declared in this scope
   16 |     bitset<4444> diff = (A^B);
      |                            ^
a.cc:18:18: error: 'AA' was not declared in this scope
   18 |     bitset<4444> AA = ((A<<n) | A);
      |                  ^~
a.cc:23:15: error: 'bitset' does not name a type
   23 |         const bitset<4444>& tmp = ((AA>>s)&diff);
      |               ^~~~~~
a.cc:25:16: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   25 |         ans += tmp.count();
      |                ^~~
      |                tm
a.cc:29:33: error: 'targets' was not declared in this scope; did you mean 'fgets'?
   29 |             return ans + min((s-targets+n)%n, (targets-s+n)%n);
      |                                 ^~~~~~~
      |                                 fgets
a.cc: At global scope:
a.cc:37:28: error: 'bitset' does not name a type
   37 | int SolveLeft(int n, const bitset<4444>& A, const bitset<4444>& B, int targets) {
      |                            ^~~~~~
a.cc:37:34: error: expected ',' or '...' before '<' token
   37 | int SolveLeft(int n, const bitset<4444>& A, const bitset<4444>& B, int targets) {
      |                                  ^
a.cc: In function 'int SolveLeft(int, int)':
a.cc:42:5: error: 'bitset' was not declared in this scope
   42 |     bitset<4444> diff = ((A^B)<<n);
      |     ^~~~~~
a.cc:42:5: note: 'std::bitset' is defined in header '<bitset>'; this is probably fixable by adding '#include <bitset>'
a.cc:42:18: error: 'diff' was not declared in this scope
   42 |     bitset<4444> diff = ((A^B)<<n);
      |                  ^~~~
a.cc:42:27: error: 'A' was not declared in this scope
   42 |     bitset<4444> diff = ((A^B)<<n);
      |                           ^
a.cc:42:29: error: 'B' was not declared in this scope
   42 |     bitset<4444> diff = ((A^B)<<n);
      |                             ^
a.cc:44:18: error: 'AA' was not declared in this scope
   44 |     bitset<4444> AA = ((A<<n) | A);
      |                  ^~
a.cc:49:15: error: 'bitset' does not name a type
   49 |         const bitset<4444>& tmp = ((AA<<s)&diff);
      |               ^~~~~~
a.cc:51:16: error: 'tmp' was not declared in this scope; did you mean 'tm'?
   51 |         ans += tmp.count();
      |                ^~~
      |                tm
a.cc:55:33: error: 'targets' was not declared in this scope; did you mean 'fgets'?
   55 |             return ans + min((s-targets+n)%n, (targets-s+n)%n);
      |                                 ^~~~~~~
      |                                 fgets
a.cc: In function 'int main()':
a.cc:73:5: error: 'bitset' was not declared in this scope
   73 |     bitset<4444> A;
      |     ^~~~~~
a.cc:73:5: note: 'std::bitset' is defined in header '<bitset>'; this is probably fixable by adding '#include <bitset>'
a.cc:73:18: error: 'A' was not declared in this scope
   73 |     bitset<4444> A;
      |                  ^
a.cc:87:22: error: 'B' was not declared in this scope
   87 |         bitset<4444> B;
      |                      ^