开灯问题

#include<stdio.h>
#include<string.h>
#define maxn 1010
int a[maxn];
int main()
{
    int n,k,first = 1;
    memset(a,0,sizeof(a));
    scanf("%d%d",&n,&k);
    for (int i = 1;i<=k;i++)
        for (int j = 1;j<=n;j++)
            if(j%i ==0)
                a[j] = !a[j];
        for (int i = 1;i<= n ;
         i++)
            if (a[i])
            {if (first)
                first = 0;
            else printf(" ");
                printf("%d",i);
            }
        printf("\n");
        return 0;

}