vs上运行的好好的，怎么一提交就编译错误

#include<iostream>
using namespace std;
#include<cstring>
#include<string>
#include<string.h>
int m[100000],b[1000000];
int len;
void  cun(string s1)
{
	for (int i = 0; i <s1.size(); i++)
	{
		if (s1[i] <= '9' && s1[i]>='0')
		{
			m[s1.size() - i] = s1[i]-'0';
		}
		else
		{
			m[s1.size() - i] = s1[i] - 'A'+10;
		}
	}
	/*for (int i = 1; i <= s1.size(); i++)
	{
		cout << m[i];
	}*/
}
void fan(int a[])
{
	for (int i = 1; i <= len; i++)
	{
		b[len + 1 - i] = a[i];
	}
}
void pplus(int a[],int b[],int n)
{
	for (int i = 1; i <= len; i++)
	{
		a[i] += b[i];
		a[i + 1] += a[i] / n;
		a[i] %= n;
	}
	if (a[len + 1])
	{
		len++;
	}
}
bool judge(int a[])
{
	string s,ss;
	for (int i = 1; i <= len; i++)
	{
		s+=to_string(a[i]);//啊啊啊啊？

	}
	ss = s;
	reverse(s.begin(), s.end());
	if (ss == s)return 1;
	else return 0;
}

int main()
{
	string s1;
	int n;
	cin >> n>> s1;
	cun(s1);
	len = s1.size();
	int v = 0;
	while (!judge(m))
	{
		fan(m);
		pplus(m, b, n);
		v++;
		if (v > 30)
		{
			break;
		}
	}
	if (v > 30)
	{
		cout<<"Impossible!";
	}
	else
	{
		cout <<"STEP="<< v;
	}




	return 0;
}