还行！！！

#include <stdio.h>
#define N 10

int Rotate_matrix(int a[][N],int b[][N],int n)
{
	int i,j,k = n-1,h,flag = 1,R = 1000;
	//旋转0度判断
	for(i = 0; i < n; i++)
		for(j = 0; j < n; j++)
			if(a[i][j] != b[i][j]) flag = 0;
	if(flag == 1) R = R < 0 ? R : 0;
	
	//旋转90度判断
	flag = 1;
	for(i = 0; i < n; i++)
	{
		h = 0;
		for(j = 0; j < n; j++)
			if(a[i][j] != b[h++][k]) flag = 0;
		k--;
	}
	if(flag == 1) R = R < 90 ? R : 90;
	
	//旋转180度判断
	flag = 1;
	k = n-1;
	for(i = 0; i < n; i++)
	{
		h = n-1;
		for(j = 0; j < n; j++)
			if(a[i][j] != b[k][h--]) flag = 0;
		k--;
	}
	if(flag == 1) R = R < 180 ? R : 180;
	
	//旋转270度判断
	flag = 1;
	h = 0;
	for(i = 0; i < n; i++)
	{
		k = n-1;
		for(j = 0; j < n; j++)
			if(a[i][j] != b[k--][h]) flag = 0;
		h++;
	}
	if(flag == 1) R = R < 270 ? R : 270;
	if(R != 1000) return R;
	else return -1;
}

int main()
{
	int n,a[N][N],b[N][N];
	while(scanf("%d",&...