View Code of Problem 57

#include<iostream>
#include<algorithm>
#include<math.h>
using namespace std;
int main() {
	int n;
	cin>>n;
	for(int i=1;i<=n;i++)
	{
			for(int j=1;j<=2*n-1;j++)
			{
				if(j<=n-i)
				cout<<" ";
				else if(j<=n)
				{
					cout<<i+j-n;
				}
				else if(j<=n+i-1)
				{
					cout<<i+n-j;
				}
			}
			if(i!=n)
			cout<<endl;
	}
	for(int i=n-1;i>=1;i--)
	{
		cout<<endl;
			for(int j=1;j<=2*n-1;j++)
			{
				if(j<=n-i)
				cout<<" ";
				else if(j<=n)
				{
					cout<<i+j-n;
				}
				else if(j<=n+i-1)
				{
					cout<<i+n-j;
				}
			}
		
	}
	return 0;
}