public class Main {
	public static void main(String[] args) {
		int n=1;
	for(int i =10;i>1;i--){
		
		n=(n+1)*2;
		
	}
	System.out.println(n);
	}

}
/**************************************************************
	Problem: 1082
	User: admin
	Language: Java
	Result: Runtime Error
****************************************************************/