func_code_string: #include <bits/stdc++.h>   int main() {     char a[100009], c;     int j = 0, i;     while ((c = getchar()) !=   n ) {       if (j == 0) {         a[j] = c;         j++;       } else {         if (a[j - 1] == c) {           j--;         } else {           a[j] = c;           j++;         }       }     }     if (j == 0) {       printf( Yes n );     } else {       printf( No n );     }   }   