func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s;     cin >> s;     int x1 = 0, x2 = 0, y1 = 0, y2 = 0, position = 0;     int length = s.size();     for (int i = 0; i < length; i++) {       if (s[i] ==  R ) {         x1++;         position++;       }       if (s[i] ==  L ) {         x1--;         position--;       }       if (s[i] ==  U ) {         y1++;         position++;       }       if (s[i] ==  D ) {         y1--;         position--;       }     }     if (length % 2 == 0) {       printf( %d , (abs(x1) + abs(y1)) / 2);     } else {       cout << -1;     }   }   