#include <iostream> #include <cstdio> #include <cmath> #include <algorithm> using namespace std; int main() { int i,j,n; cin >>n; for(i=0;i<n;i++) { for(j=0;j<n;j++) { if(i==0||i==n-1) { cout<<"*"; continue; } if(j==(n-i-1)) { cout<<"*"; break; } else cout<<" "; } cout<<endl; } return 0; }