#include <bits/stdc++.h>
#define ld long double
#define ll long long
#define all(a) a.begin(), a.end()
#define rall(a) a.rbegin(), a.rend()
#define sz(s)    (int)(s.size())
const ll N = 2472113+10, mod = 1e9+7;
const ll OO = 6e18;
const auto EPS = 1e-6;
const auto PI = acos(-1);
using namespace std;
int DX[] = { 1, -1, 0, 0, -1, 1, 1, -1 };
int DY[] = { 0, 0, 1, -1, 1, -1, 1, -1 };
int dx[] = { 1,0,-1,0 } ,dy[] = { 0,1,0,-1 };

ll mult(ll x, ll y)
{
	return ((x%mod)*(y%mod))%mod;
}
ll fpow(ll x, ll n)
{
	ll res = 1;
	while(n)
	{
		if(n&1)
		{
			res = mult(res,x);
		}
		n >>= 1LL;
		x = mult(x,x);
	}
	return res;
}
ll fact[N+5];
ll n, p[N+6], q[N+6];
void testCase()
{
	fact[0] = 1;
	for(ll i=1;i<=N;i++)
	{
		fact[i] = mult(fact[i-1], i);
	}
	cin >> n;
	for(ll i=1;i<=n;i++)
	{
		cin >> p[i];
	}
	for(ll i=1;i<=n;i++)
	{
		cin >> q[i];
	}
	ll bast = 0, maqam = 1;
	bool ok = 1;
	for(ll i=1;i<=n;i++)
	{
		if(q[i] < p[i])
		{
			ok = 0;
			break;
		}
		else if((q[i] - p[i])%i != 0)
		{
			ok = 0;
			break;
		}
		ll x = (q[i] - p[i])/i;
		bast += x;
		maqam = mult(maqam, fact[x]);
	}
	if(!ok)
	{
		cout << 0;
		return;
	}
	bast = fact[bast];
	cout << mult(bast, fpow(maqam, mod-2));
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    int t = 1;  // cin >> t;
    for(int tc = 1;tc<=t;tc++)
    {
        //cout << "Case #" << tc << ": ";
        testCase();
    }
    return 0;
}