zap0

#include <iostream>

using namespace std;

int main()
{

 for (int i=1;i<9;i++)
 {
    cout<<" ";
       static int j=0;
    if (i==1 || (i%2==0)){
        if (i!=1) cout<<i;  //print i before j
        cout<<" "<<j--<<" ";
        if (i==1) cout<<i;  //print i after j
        continue;   //skip this loop
    }
    cout<<i;


 }
    cout<<endl;
    return 0;
}