func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int h, cen;     long long n, num;     while (scanf( %d%I64d , &h, &n) != EOF) {       num = (long long)pow(2.0, h) - 1 + n;       int flag;       long long ans = 0;       if (num % 2 == 0)         flag = 0;       else         flag = 1;       cen = h - 1;       while (1) {         ans++;         num /= (long long)2;         if (num % 2 == 0) {           if (flag == 0) ans += (long long)pow(2.0, h - cen) - (long long)1.0;           flag = 0;         } else {           if (flag == 1) ans += (long long)pow(2.0, h - cen) - (long long)1.0;           flag = 1;         }         if (num == 1) break;         cen--;       }       printf( %I64d n , ans);     }     return 0;   }   