func_code_string: #include <bits/stdc++.h>   int main(void) {     int stack[100000 + 1], sp = 0, c;     stack[0] =   0 ;     while (c = getchar(), c !=   n ) {       if (c == stack[sp])         --sp;       else         stack[++sp] = c;     }     printf( %s n , sp == 0 ?  Yes  :  No );     exit(EXIT_SUCCESS);   }   