#include <iostream>
using namespace std;
int main() {
int n;
cin>>n;
if(n==0)
{
cout<<"1";
}
if(n==1)
{
cout<<"2";
}
if(n>=2)
{
int s=1;
for(int i=0;i<n;i++)
{
s=(s<<1);
}
cout<<s;
}
return 0;
}
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