func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, a = 0, b = 0, count = 0;     char ch, c;     cin >> n >> c;     if (c ==  U )       b++;     else       a++;     n--;     while (n--) {       cin >> ch;       if (a == b && ch != c) {         count++;         c = ch;       }       if (ch ==  U )         b++;       else         a++;     }     cout << count;   }   