#include<bits/stdc++.h>
#define int __int128
using namespace std;
namespace IO{
    char buff[1<<21],*p1=buff,*p2=buff;
    char getch(){
        return p1==p2&&(p2=((p1=buff)+fread(buff,1,1<<21,stdin)),p1==p2)?EOF:*p1++;
    }
    template<typename T>
    void read(T &x){
        char ch=getch();int fl=1;x=0;
        while(ch>'9'||ch<'0'){if(ch=='-')fl=-1;ch=getch();}
        while(ch<='9'&&ch>='0'){x=x*10+ch-48;ch=getch();}
        x*=fl;
    }
    template<typename T,typename ...Args>
    void read(T &x,Args& ...args){
        read(x);read(args...);
    }
    char obuf[1<<21],*p3=obuf;
    void putch(char ch){
        if(p3-obuf<(1<<21))*p3++=ch;
        else fwrite(obuf,p3-obuf,1,stdout),p3=obuf,*p3++=ch;
    }
    char ch[100];
    template<typename T>
    void write(T x){
    	if(!x)return putch('0');
        if(x<0)putch('-'),x*=-1;
        int top=0;
        while(x)ch[++top]=x%10+48,x/=10;
        while(top)putch(ch[top]),top--;
    }
    template<typename T,typename ...Args>
    void write(T x,Args ...args){
        write(x);write(args...);
    }
    void flush(){fwrite(obuf,p3-obuf,1,stdout);}
}
using namespace IO;
int n,m,K,B,ans;
int f[40][40],g[40][400],pw[40];
int calc(int pos,int x){
	int r=(m-(ans+pw[pos]*x)%m)%m,ret=0;
	for(int t=0;t<B;t++){
		int now=t*m+r;
		memset(f,0,sizeof(f));f[0][0]=1;
		for(int i=1;i<=K;i++)
			for(int j=0;j<B;j++)
				for(int k=0;k<B;k++){
					int bit=(now/pw[i-1])%10;
					int del=k*10+bit-j;if(del<0)continue;
					f[i][k]+=f[i-1][j]*g[(pos-i+K)/K][del];
				}
		ret+=f[K][now/pw[K]];
	}return ret;
}
signed main(){
	pw[0]=1;for(int i=1;i<=38;i++)pw[i]=pw[i-1]*10;
	g[0][0]=1;
	for(int i=1;i<=38;i++)
		for(int j=0;j<400;j++)
			for(int k=0;k<9&&k<=j;k++)
				g[i][j]+=g[i-1][j-k];
	read(K,n);n++;B=36/K+1;m=pw[K]-1;
	for(int i=min(B*K-1,(int)37);i>=0;i--)
		for(int j=0;j<9;j++){
			int cnt=calc(i,j);//write(i);putch(' ');write(j);putch(' ');write(cnt);putch('\n');
			if(cnt>=n){ans+=pw[i]*j;break;}
			else n-=cnt;
		}//write(ans);putch('\n');
	write(ans/m);flush();
	return 0;
}