fork download
copy 
  1. // B
  2. #pragma GCC optimize ("O3")
  3. #include "bits/stdc++.h"
  4. using namespace std;
  5. using ll = long long;
  6. using db = long double;
  7. const int N = 2e5 + 5, MOD = 1e9 + 7;
  8. using mat = vector<vector<int>>;
  9.  
  10. int main(){
  11. #ifdef ONLINE_JUDGE
  12. ios_base::sync_with_stdio(0);cin.tie(0);
  13. #endif // ONLINE_JUDGE
  14.     string a, b;
  15.     cin >> a >> b;
  16.     int n = a.size();
  17.     if((count(a.begin(),a.end(),'1')+count(b.begin(),b.end(),'1')) & 1){
  18.       cout << -1 << '\n';
  19.       return 0;
  20.     }
  21.     int ans = INT_MAX;
  22.     for(int i = 0; i < n; i++){
  23.       vector<int> tmp;
  24.       for(int j = 0; j < n; j++)
  25.         if(a[j] != b[(i+j)%n])
  26.           tmp.push_back(j);
  27.       int sum = 0;
  28.       for(int j = 0; j < tmp.size(); j += 2)
  29.         sum += (tmp[j + 1] - tmp[j]);
  30.       ans = min(ans, min(sum, n - sum));
  31.     }
  32.     cout << ans << '\n';
  33.  
  34.   return 0;
  35. }
Success #stdin #stdout 0.01s 5312KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
2147483647
https://ideone.com/oZVEUv
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!