#include <iostream>  
using namespace std;  
int main(){  
   int i,n = 1;
   for(i = 1;i <= 9;i++)
   { 
      n = (n + 1) * 2;
   }
   cout<<n<<endl;
   return 0;  
  } 

/**************************************************************
	Problem: 1082
	User: admin
	Language: C++
	Result: Runtime Error
****************************************************************/