#include<stdio.h>
#include<math.h>
int main()
{
    int row;
    int column;
    scanf("%d",&row);
    scanf("%d",&column);
    if(row<0&&row>9||column<0&&column>9)
    {
    printf("invalid input");
    }
    else
    {
       int n=(1,2,3,4,5,6,7,8,9)
       int m=[1,2,3,4,5,6,7,8,9];
       {
        printf("%d%d",m,n);
    }
    return 0;
    
}