#include<bits/stdc++.h>
using namespace std;

string add(string a,string b)
{
    if(a.length()>b.length())
        swap(a,b);
    string ans="";
    int len1=a.length();
    int len2=b.length();
    reverse(a.begin(),a.end());
    reverse(b.begin(),b.end());
    int i,j,k,sum=0,carry=0;
    for(i=0;i<len1;i++)
    {

        sum=((a[i]-'0')+(b[i]-'0'))+carry;
        ans.push_back((sum%10)+'0');
        carry=sum/10;
    }
     for(i=len1;i<len2;i++)
    {

        sum=((b[i]-'0'))+carry;
        ans.push_back((sum%10)+'0');
        carry=sum/10;
    }
    if(carry)
        ans.push_back(carry+'0');
    reverse(ans.begin(),ans.end());
    return ans;
}

string mul(string a,int n)
{
    string s;
    int len=a.size()-1,carry=0,x;
    while(len>=0)
    {
        x=(a[len]-'0')*n+carry;
        s+=x%10+'0';
        carry=x/10;
        len--;
    }
    while(carry)
    {
        s+=(carry%10)+'0';
        carry/=10;
    }
    reverse(s.begin(),s.end());
    return s;
}

int main()
{
    int n,A,i,j,k;
    string sum,res,ans;
    while(cin>>n>>A)
    {
        res.clear();
        sum.clear();
        ans.clear();
        if(A==0)
        {
            cout<<0<<endl;
            continue;
        }
        int a,b,c,d,e;
        b=A;
         while(A)
         {
             sum+=A%10+'0';
             res+=A%10+'0';
             A/=10;
         }
         reverse(sum.begin(),sum.end());
         reverse(res.begin(),res.end());
         for(i=2;i<=n;i++)
         {
             sum=mul(sum,b);
             ans=mul(sum,i);
             res=add(ans,res);
         }
        cout<<res<<endl;
    }
    return 0;
}