func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int x, x1, y, y1;     char a, b;     cin >> a >> y >> b >> y1;     x1 = a - 96;     x = b - 96;     int counter = 0;     string s[100000];     while (true) {       if (x == x1 && y == y1) {         break;       }       if (x > x1) {         x1++;         s[counter] +=  R ;       }       if (x < x1) {         x1--;         s[counter] +=  L ;       }       if (y > y1) {         y1++;         s[counter] +=  D ;       }       if (y < y1) {         y1--;         s[counter] +=  U ;       }       counter++;     }     cout << counter << endl;     for (int i = 0; i < counter; i++) {       cout << s[i] << endl;     }   }   