#include "stdio.h"

#include "malloc.h"

#include "math.h"

void calc(int num,int N,long *data);

int main()

{

    int N,num;

    long *result;

    scanf("%d",&num);

    scanf("%d",&N);

    result=(long *)malloc(N*sizeof(long));

    calc(num,N,result);

    return ;

}

void calc(int num,int N,long *data)

{

    long i=;

    long val=;

    long dif;

    int j;

    if(num<=||N<=)

    {

        printf("");

        return;

    }

    for(i=;i<N||val>;i++)

    {

        val=val+num*(N-i);

        dif=val%;

        data[i]=dif;

        val=(val-dif)/;

    }

    for(j=i-;j>=;j--)

    {

        printf("%ld",data[j]);

    }

}