include <bits/stdc++.h> using namespace std;int main(){ int a,b,c,d,i,j; while(~scanf("%d",&a)) { b=a2+1; for(i=0;i<b;i++) { for(j=0;j<=a;j++) { if(j<=a-i||j<=i-a) printf(" "); else printf(" "); } printf("\n"); } }}