求帮求教！！！！

I NEED HELP, PLEASE TEACH ME!!!!

样例输入：

5 4
2 2 1 0
3 3 1 1
4 4 1 0
3 3 2 1

样例输出：

5 10 3 18 15
4 19 8 17 20
1 14 23 24 25
6 9 2 7 22
11 12 13 16 21

我的输出：

5 10 11 4 5
4 19 14 19 10
11 14 13 18 15
16 9 12 17 22
21 22 23 16 21

代码：

#include <bits/stdc++.h>
using namespace std;
const int N = 5e2 + 10;

int n, m, x, y, r, z, num;
int a[N][N], b[N][N];
bool v[N][N];

int main()
{
	cin >> n >> m;
	for (int i = 1; i <= n; i++)
		for (int j = 1; j <= n; j++)
			a[i][j] = ++num;
	while (m--)
	{
		memset(v, false, sizeof(v));
		cin >> x >> y >> r >> z;
		for (int i = x - r; i <= x + r; i++)
			for (int j = y - r; j <= y + r; j++)
				v[i][j] = true;
		if (!z) // 顺时针
		{
			for (int i = 1; i <= n; i++)
				for (int j = n, bj = 1; j >= 1 and bj <= n; j--, bj++)
					b[i][bj] = a[j][i];
			for (int i = 1; i <= n; i++)
				for (int j = 1; j <= n; j++)
					if (v[i][j])
						a[i][j] = b[i][j];
		}
		else // 逆时针 = 顺时针3次
		{
			for (int i = 1; i <= n; i++)
				for (int j = n, bj = 1; j >= 1 and bj <= n; j--, bj++)
					b[i][bj] = a[j][i];
			for (int i = 1; i <= n; i++)
				for (int j = 1; j <= n; j++)
					if (v[i][j])
						a[i][j] = b[i][j];
			
			for (int i = 1; i <= n; i++)
				for (int j = n, bj = 1; j >= 1 and bj <= n; j--, bj++)
					b[i][bj] = a[j][i];
			for (int i = 1; i <= n; i++)
				for (int j = 1; j <= n; j++)
					if (v[i][j])
						a[i][j] = b[i][j];
			
			for (int i = 1; i <= n; i++)
				for (int j = n, bj = 1; j >= 1 and bj <= n; j--, bj++)
					b[i][bj] = a[j][i];
			for (int i = 1; i <= n; i++)
				for (int j = 1; j <= n; j++)
					if (v[i][j])
						a[i][j] = b[i][j];
		}
	}
	for (int i = 1; i <= n; i++)
	{
		for (int j = 1; j <= n; j++)
			cout << a[i][j] << " ";
		cout << endl;
	}
	
	return 0;
}