#include<cstdio>
#include<iostream>
using namespace std;
int main()
{
int n,m;
while(cin>>m>>n)
{
if(m==1)
cout<<n+2<<endl;
else if(m==2)
cout<<2*n+3<<endl;
else
cout<<(unsigned int )(2<<(n+2))-3<<endl;
}
return 0;
}
#include<iostream>
using namespace std;
int main()
{
int n,m;
while(cin>>m>>n)
{
if(m==1)
cout<<n+2<<endl;
else if(m==2)
cout<<2*n+3<<endl;
else
cout<<(unsigned int )(2<<(n+2))-3<<endl;
}
return 0;
}