c++ 开灯问题

#include<bits/stdc++.h>
#include<algorithm>
#include<math.h>
using namespace std;
#define maxn 1010
int a[maxn]; 
int main(){
  int n,k,first=1;
  memset(a,0,sizeof(a));
  cin>>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 cout<<" ";
      cout<<i; 
    }
  
  }
  cout<<endl;

}