Round 3 unified soln

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define vi vector<int>
#define vll vector<long long int>
void spaces(int n)
{

    for (int i = 0; i < n; i++)
    {

        printf(" ");
    }
}

void numbers(int n)
{

    for (int i = 1; i <= n; i++)
    {

        printf("%d", i);
    }

    for (int i = n - 1; i >= 1; i--)
    {

        printf("%d", i);
    }
}

void pattern(int n)
{

    for (int i = 1; i <= n; i++)
    {

        spaces(n - i);
        for (int j = 0; j < n; j++)
        {

            numbers(i);
            spaces(2 * (n - i));
        }
        printf("\n");
    }

    for (int i = n - 1; i >= 1; i--)
    {

        spaces(n - i);
        for (int j = 0; j < n; j++)
        {

            numbers(i);
            spaces(2 * (n - i));
        }
        printf("\n");
    }
}

int main()
{
#ifndef ONLINE_JUDGE
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
#endif
    std::ios::sync_with_stdio(false);
    int n;
    cin>>n;

    for (int i = 0; i < n; i++)
        pattern(n);
}