#include<stdio.h>
int main()
{
    int n;
    scanf("%d",&n);
    if(n<0)
    {
        printf("Invalid input");
        return 0;
    }
    int row=1;
    int num=1;
    do
    {
        int count=1;
        do
        {
            printf("%d",num);
            num += 2;
            count++;
        }while (count<=row);
    }
}