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- #include<iostream>
- using namespace std;
- int main()
- {
- int n;
- int num[100000];
- cin>>n;
- for(int i=0; i<n; i++)
- {
- num[i]=i+1;
- }
- for(int i=1; i<=n; i++)
- {
- if(num[i]!=0)
- {
- int k=num[i]*2-1;
- int step=num[i];
- for(int j=k; j<=n; j+=step)
- {
- num[j]=0;
- }
- }
- }
- for(int i=0; i<n; i++)
- {
- if(num[i]!=0) cout<<num[i]<<endl;
- }
- return 0;
- }
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