大佬求看一下代码，样例过了，却是WA

#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <string>
#include <cmath>
#include <algorithm>
using namespace std;
int main()
{
	short int a[45005];
	int num=0,sum=0;
	char x[205][205];
	gets(x[1]);//输入我用的是gets
	int n=strlen(x[1]);//读入n的值
	for (int i=2;i<=n;i++)
	gets(x[i]);
	cout<<n<<" ";
	for (int i=1;i<=n;i++)
	for (int j=1;j<=n;j++)
	{
		num++;
		a[num]=x[i][j-1]-48;//将矩阵变为一列
	}
	a[0]=0,a[num+1]=-100;//预处理一下
	//for (int i=0;i<=num;i++) cout<<a[i];cout<<endl;
	for (int i=1;i<=num+1;i++)
	{
		if (a[i]==a[i-1]) sum++;
		else
		{
			cout<<sum<<" ";
			sum=1;
		}
	}
}