这是我用结构体写出的抽象写法？但只有60求助

CODE

#include<bits/stdc++.h>
using namespace std;

int n, ans[25][25];

struct edge
{
    int x, y;
} b[200];

int main()
{
    cin >> n;
    b[1].x = 1;
    b[1].y = n / 2 + 1;
    ans[1][n / 2 + 1] = 1;
    for (int i = 2; i <= n * n; i++)
    {
        if (b[i - 1].x == 1)
        {
            if (b[i - 1].y == n)
            {
                b[i].x = b[i - 1].x + 1;
                b[i].y = b[i - 1].y;
                ans[b[i].x][b[i].y] = i;
            }
            else
            {
                b[i].x = n;
                b[i].y = b[i - 1].y + 1;
                ans[b[i].x][b[i].y] = i;
            }
        }
        else if (b[i - 1].y == n)
        {
            b[i].x = b[i - 1].x - 1;
            b[i].y = 1;
            ans[b[i].x][b[i].y] = i;
        }
        else if (ans[b[i - 1].x - 1][b[i - 1].y + 1] == 0)
        {
            b[i].x = b[i - 1].x - 1;
            b[i].y = b[i - 1].y + 1;
            ans[b[i].x][b[i].y] = i;
        }
        else
        {
            b[i].x = b[i - 1].x + 1;
            b[i].y = b[i - 1].y;
            ans[b[i].x][b[i].y] = i;
        }
    }
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= n; j++)
        {
            cout << ans[i][j] << " ";
        }
        cout << endl;
    }
    return 0;
}