#include <cstdio>
#include <stdlib.h>
#include <time.h>

int main()
{
    int n;
    srand(time(NULL));
    freopen(".20.in","w",stdout);
    scanf("%d", &n);
    printf("%d\n", n);
    for(int i = 0 ; i < n ; i++ )
        printf("%d ", rand()%(10*n)+1);

}