a) #include<iostream.h>
using namespace std;
int main()
{int n,i=0;
cin>>n;
while(i<=n)
{cout<<2*i+1<<" ";
i++;}
return 0;}
b) #include<iostream.h>
using namespace std;
int main()
{int n,i=0;
cin>>n;
while(i<=n)
{cout<<"2*i+1"<<" "<<0<<" ";
i++;}
return 0;}