#include <iostream>
using namespace std;
int main() {
int n;
cin >> n;
for(int i=n;i>=1;i-=2){
for(int j=1;j<=i-1;j+=2){
cout << " ";
}for (int k=i;k<=n;k++){
cout << "o";
}
cout << "\n";
}
return 0;
}
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