#include<iostream>
using namespace std;
int convertBinaryToDecimal(int n)
{
    if(n<0)
    {
        cout<<"Invalid input"<<endl;
        return-1;
    }
    int decimal=0,base=1;
    while(n>0)
    {
        int lastDigit=n%10;
        if(lastDigit!=0&&lastdigit!=1)
        {
            cout<<"Invalid input"<<endl;
            return-1;
        }
        decimal+=lastDigit*base;
        base*=2;
        n/=10;
    }
    return decimal;
}
long long convertBinaryToDecimal(long long n)
{
if(n<0)
{
    cout<<"Invalid input"<<endl;
    return-1;
}
long long decimal=0,base=1;
while(n>0)
{
    int lastDigit=n%10;
    if(lastDigit!=0&&lastDigit!=1)
    {
        cout<<"Invalid input"<<endl;
        return-1;
    }
    decimal+=lastDigit*base;
    base*=2;
    n/=10;
}
return decimal;
}
int main()
{
    int bin1;
    long long bin2;
    cin>>n1>>n2;
    int result1=convertBinaryToDecimal(bin1);
    long long result2=convertBinaryToDecimal(bin2);
    if(result1!=-1)
        cout<<result1<<endl;
    if(result2!=-1)
        cout<<result2<<endl;
    return 0;
}