func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     ios_base::sync_with_stdio(false), cin.tie(0), cout.tie(0);     long long i, j, a, n = 0;     string s, str;     cin >> a;     cin >> s >> str;     for (long long i = 0; i < s.size() - 1; i++) {       if (s[i] == str[i]) continue;       if (s[i] != str[i] and s[i + 1] != str[i + 1]) {         swap(s[i], s[i + 1]);         n++;         continue;       }       n++;     }     if (s[a - 1] != str[a - 1]) n++;     cout << n;     return 0;   }   