#include<iostream>
#include<cstring>
using namespace std;
int main()
{
char a[20],b[20];
while(cin>>a>>b)
{
int sum1=0,sum2=0,sum=0;
int t;
int lengh1=strlen(a);
int lengh2=strlen(b);
for(int i=0;i<lengh1;i++)
{
if(a[i]<='9')
t=a[i]-'0';
else
{
a[i]=toupper(a[i]);
t=a[i]-'A'+10;
}
sum1=sum1*16+t;
}
for(int j=0;j<lengh2;j++)
{
if(b[j]<='9')
t=b[j]-'0';
else
{
b[j]=toupper(b[j]);
t=b[j]-'A'+10;
}
sum2=sum2*16+t;
}
cout<<sum1+sum2<<endl;
}
return 0;
}
