#include <iostream>
#include <iterator>
#include <cstdlib>

int main() {
  using namespace std;
  const int n = 5;
  
  auto out = ostream_iterator<const char*>(cout," ");
  
  for(int i = 0; i != n; ++i) {
  	auto width = n - abs(i - n/2);
  	fill_n(out, n-width, " ");
  	fill_n(out, width, " * ");
  	cout << "\n";
  }
}