using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;
using static System.Math;
using static System.Array;
using static AtCoder.Tool;
namespace AtCoder
{
    class AC
    {
        const int MOD = 1000000007;
        const int INF = int.MaxValue / 2;
        const long SINF = long.MaxValue / 2;
        const double EPS = 1e-8;
        static readonly int[] dx = { 0, 1, 0, -1 };
        static readonly int[] dy = { 1, 0, -1, 0 };
        //static List<List<int>> G = new List<List<int>>();
        //static List<List<Edge>>G = new List<List<Edge>>();
        //static List<Edge> E = new List<Edge>();
        
        static void Main(string[] args)
        {
            //var sw = new StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
            //Console.SetOut(sw);
            var cin = new Scanner();

            int N = int.Parse(Console.ReadLine());
            var tin = cin.ReadSplitL();
            var ain = cin.ReadSplitL();
            var T = new long[N + 2];
            var A = new long[N + 2];
            T[0] = SINF; T[N + 1] = 0;
            A[0] = 0;A[N + 1] = SINF;

            for(var i = 1; i <= N; i++) { A[i] = ain[i - 1];T[i] = tin[i - 1]; }

            long ans = 1;
            for(var i = 1; i <= N; i++)
            {
                if (T[i] != T[i - 1])
                {
                    if (A[i] != A[i + 1])
                    {
                        if (A[i] != T[i]) ans = 0;
                        else { continue; }
                    }
                    else
                    {
                        if (T[i] > A[i]) ans = 0;
                        else { continue; }
                    }
                }
                else
                {
                    if (A[i] != A[i + 1])
                    {
                        if (T[i] < A[i]) ans = 0;
                        else { continue; }
                    }
                    else
                    {
                        ans *= Min(A[i], T[i]);
                        ans %= MOD;
                    }
                }
            }
            Console.WriteLine(ans);

            //Console.Out.Flush();
        }
        struct Edge
        {
            public int from;

            public int to;
            public long dist;
            public Edge(int t, long c)
            {
                from = -1;
                to = t;
                dist = c;
            }
            public Edge(int f, int t, long c)
            {
                from = f;
                to = t;
                dist = c;
            }

        }
    }
    public class Scanner
    {
        public int[] ReadSplit()
        {
            return ConvertAll(Console.ReadLine().Split(), int.Parse);
        }
        public long[] ReadSplitL()
        {
            return ConvertAll(Console.ReadLine().Split(), long.Parse);
        }
        public double[] ReadSplitD()
        {
            return ConvertAll(Console.ReadLine().Split(), double.Parse);
        }
    }
    public static class Tool
    {
        static public void Initialize<T>(ref T[] array, T initialvalue)
        {
            for (var i = 0; i < array.Length; i++)
            {
                array[i] = initialvalue;
            }
        }
        static public void Swap<T>(ref T a, ref T b)
        {
            T keep = a;
            a = b;
            b = keep;
        }

        static public void Display<T>(T[,] array2d, int n, int m)
        {
            for (var i = 0; i < n; i++)
            {
                for (var j = 0; j < m; j++)
                {
                    Console.Write($"{array2d[i, j]} ");
                }
                Console.WriteLine();
            }
        }

    }
}


Measured memory_bytes: 34780