using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;
using System.Globalization;
using System.Diagnostics;



class Myon
{
    public Myon() { }
    public static int Main()
    {
        new Myon().calc();
        return 0;
    }
    

    Scanner cin;

    void calc()
    {
        cin = new Scanner();
        int N = cin.nextInt();
        int[] A = cin.ArrayInt(N);
        int[] B = cin.ArrayInt(N);

        if (N == 1)
        {
            if (A[0] != B[0]) Console.WriteLine(0);
            else Console.WriteLine(1);
            return;
        }

        int[] min = new int[N];
        int[] max = new int[N];

        min[0] = max[0] = A[0];

        for (int i = 1; i < N; i++)
        {
            if(A[i] > A[i - 1])
            {
                min[i] = max[i] = A[i];
            }
            else
            {
                max[i] = A[i];
                min[i] = 1;
            }
        }


        int[] min2 = new int[N];
        int[] max2 = new int[N];

        min2[N - 1] = max2[N - 1] = B[N - 1];

        for (int i = N - 2; i >= 0; i--)
        {

            if (B[i] > B[i + 1])
            {
                min2[i] = max2[i] = B[i];
            }
            else
            {
                max2[i] = B[i];
                min2[i] = 1;
            }
        }

        long mod = 1000000007;


        long ans = 1;
        for (int i = 0; i < N; i++)
        {
            ans *= getRange(min[i], max[i], min2[i], max2[i]);
            ans %= mod;
        }

        Console.WriteLine(ans);
    }

    int getRange(int mi, int ma, int mi2, int ma2)
    {
        int start = Math.Max(mi, mi2);
        int end = Math.Min(ma, ma2);

        return Math.Max(0, end - start + 1);
    }
    


}


class Scanner
{
    string[] s;
    int i;

    char[] cs = new char[] { ' ' };

    public Scanner()
    {
        s = new string[0];
        i = 0;
    }

    public string next()
    {
        if (i < s.Length) return s[i++];
        string st = Console.ReadLine();
        while (st == "") st = Console.ReadLine();
        s = st.Split(cs, StringSplitOptions.RemoveEmptyEntries);
        if (s.Length == 0) return next();
        i = 0;
        return s[i++];
    }

    public int nextInt()
    {
        return int.Parse(next());
    }
    public int[] ArrayInt(int N, int add = 0)
    {
        int[] Array = new int[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextInt() + add;
        }
        return Array;
    }

    public long nextLong()
    {
        return long.Parse(next());
    }

    public long[] ArrayLong(int N, long add = 0)
    {
        long[] Array = new long[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextLong() + add;
        }
        return Array;
    }

    public double nextDouble()
    {
        return double.Parse(next());
    }


    public double[] ArrayDouble(int N, double add = 0)
    {
        double[] Array = new double[N];
        for (int i = 0; i < N; i++)
        {
            Array[i] = nextDouble() + add;
        }
        return Array;
    }
}


Measured memory_bytes: 33860