func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long int mxN = 1e5 + 5;   const long long int MOD = 1e9 + 7;   long long int one = 0;   long long int ceil1(long long int a, long long int b) {     if (a % b == 0)       return (a / b);     else       return ((a / b) + 1);   }   void solve() {     long long int n;     cin >> n;     string s;     cin >> s;     long long int x = 0, y = 0;     for (long long int i = 0; i < n; i++) {       if (i & 1) {         if (s[i] !=  r ) x++;       } else {         if (s[i] !=  b ) y++;       }     }     long long int ans = INT_MAX;     ans = min(ans, max(x, y));     x = 0, y = 0;     for (long long int i = 0; i < n; i++) {       if (i & 1) {         if (s[i] !=  b ) x++;       } else {         if (s[i] !=  r ) y++;       }     }     ans = min(ans, max(x, y));     cout << ans <<   n ;   }   signed main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     long long int t = 1;     while (t--) {       one++;       solve();     }     return 0;   }   