#include<iostream> #include<cstring> using namespace std; int main(){ int a; cin>>a; for(int i=1;i<=a-1;i++){ for(int j=1;j<=i;j++){ cout<<" "; } for(int j=1;j<=2*a-1-2*i;j++){ cout<<"*"; } cout<<endl; } for(int i=1;i<=a;i++){ for(int j=1;j<=a-i;j++){ cout<<" "; } for(int j=1;j<=2*i-1;j++){ cout<<"*"; } cout<<endl; } }