本来想“暴力枚举”直接列数组，没想到只得了四十分，求助个位dalao神犇！

#include <bits/stdc++.h>
using namespace std;
int F[10] = {0,1,3,6,10,15,21,28,36,45};
int V[10] = {1,2,4,7,11,16,22,29,37,46};
int lianjia(int n)
{
	int sum = 0;
	for (int i = 1; i <= n; i++) sum += i;
	return sum;
}
int main()
{
	int n;
	cin >> n;
	for (int i = 1; i <= (int)pow(n,2); i++)
	{
		if (i <= 9) cout << 0 << i;
		else cout << i;
		if (i % n == 0) cout << endl;
	} 
	cout << endl;
	int line = n - 1;
	for (int i = 1; i <= lianjia(n); i++)
	{
		for (int j = 0; j < 10; j++)
		{
			if (i == V[j])
			{
				cout << setw(line * 2 + 1);
				line--;
			}
		}
		if (i <= 9) cout << 0 << i;
		else cout << i;
		for (int j = 0; j < 10; j++)
		{
			if (i == F[j]) cout << endl;
		}
	}
	return 0;
}