func_code_string: #include <bits/stdc++.h>   int main() {     int t, n, a, b, c, x, z = 0, e = 0, r = 0, o = 0, n1 = 0;     char s[100000];     scanf( %d , &n);     scanf( %s , &s);     for (x = 0; x < n; x++) {       if (s[x] ==  z )         z++;       else if (s[x] ==  e )         e++;       else if (s[x] ==  r )         r++;       else if (s[x] ==  o )         o++;       else if (s[x] ==  n )         n1++;     }     if (n1 <= o && n1 <= e) {       for (x = 0; x < n1; x++) printf( 1  );       o -= n1;       e -= n1;       a = (o > e) ? e : o;       b = (z > r) ? r : z;       c = (a > b) ? b : a;       for (x = 0; x < c; x++) printf( 0  );     } else {       t = (o > e) ? e : o;       for (x = 0; x < t; x++) printf( 1  );     }   }   