View Code of Problem 57

#include<iostream>
#include<cstring>
using namespace std;
int main()
{
	int n;
	cin >> n;
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n + i; j++) {
			if (j < n - i-1) {
				cout << " ";
			}
			else {
				cout << i+1-abs(n-1-j);
			}
		}
		cout << "\n";
	}
	for (int i = n-2; i >=0; i--) {
		for (int j = 0; j < n + i; j++) {
			if (j < n - i - 1) {
				cout << " ";
			}
			else {
				cout << i + 1 - abs(n - 1 - j);
			}
		}
		cout << "\n";
	}
	cin >> n;
	return 0;
}