1 solutions

  • 0
    @ 2025-12-3 8:26:05

    C++ :

    #include<bits/stdc++.h>
    using namespace std;
    int a[100005],b[100005];
    int n,k,x,y,ans;
    int main()
    {
    	for(int i=2;i*i<=100003;i++)
    	{
    		if(b[i]==0)
    			for(int j=i+i;j<=100003;j+=i)
    				b[j]=1;
    	}
    	b[1]=1;
    	for(int i=1;i<=100000;i++)
    	{
    		if(b[i]==0) a[++k]=i;
    	}
    //	for(int i=1;i<=10;i++) cout<<a[i]<<' ';
    //	cout<<endl;
        cin>>n;
        for(int i=4;i<=n;i++)
        {
        //	cout<<i<<' ';
        	int t=0,ii=i;
        	//cout<<ii<<' ';
        	for(int j=1;ii>1;)
        	{//cout<<a[j]<<' ';
        		if(ii%a[j]==0) ii/=a[j],t++;
        		else j++;
        		
        	}
        //	cout<<t<<endl;
        	if(b[t]==0&&i%t==0)
        	{
        		cout<<i<<endl;
        	}
        }
        return 0;
    }
    
    • 1

    Information

    ID
    740
    Time
    1000ms
    Memory
    128MiB
    Difficulty
    (None)
    Tags
    # Submissions
    0
    Accepted
    0
    Uploaded By