using LIB;
using System;
using System.Linq;
using System.Text;
using System.Collections.Generic;

class Program
{
    public static IO IO = new IO();
    static void Main(string[] args)
    {
        int n = IO.INT();
        long[] t = IO.LONG(' ');
        long[] a = IO.LONG(' ');
        long[] patht = new long[n];
        long[] patha = new long[n];
        bool[] chgt = new bool[n];
        bool[] chga = new bool[n];
        long mint = -1;
        long mina = -1;
        for (int i = 0; i < n; i++)
        {
            if (t[i] != mint)
            {
                mint = t[i];
                patht[i] = 1;
                chgt[i] = true;
            }
            else
            {
                patht[i] = t[i];
            }
            if (a[n - i - 1] != mina)
            {
                mina = a[n - i - 1];
                patha[n - i - 1] = 1;
                chga[n - i - 1] = true;
            }
            else
            {
                patha[n - i - 1] = a[n - i - 1];
            }
        }
        long o = 1;
        for (int i = 0; i < n; i++)
        {
            if (chgt[i])
            {
                if (chga[i])
                {
                    if (t[i] != a[i])
                    {
                        o = 0;
                        break;
                    }
                }
                else
                {
                    if (a[i] < t[i])
                    {
                        o = 0;
                        break;
                    }
                }
            }
            else if (chga[i])
            {
                if (t[i] < a[i])
                {
                    o = 0;
                    break;
                }
            }
            o *= Math.Min(patht[i], patha[i]);
            if (o > 1000000007)
            {
                o %= 1000000007;
            }
        }
        IO.WRITE(o);
        IO.FLUSH();
    }
}

namespace LIB
{
    public class IO
    {
        private const int WMAX = 1000;
        private StringBuilder S = new StringBuilder();
        private T R<T>(Func<string, T> f) { return f(Console.ReadLine()); }
        private T[] R<T>(Func<string, T> f, char c) { return STRING().Split(c).Select(f).ToArray(); }
        private T[] R<T>(Func<string, T> f, int l) { T[] r = new T[l]; for (int i = 0; i < l; i++) { r[i] = R(f); } return r; }
        private T[][] R<T>(Func<string, T> f, int l, char c) { T[][] r = new T[l][]; for (int i = 0; i < l; i++) { r[i] = R<T>(f, c); } return r; }
        private void W<T>(Func<T, string> f, T v, bool lf = true) { S.Append(f(v)); if (lf == true) { S.Append('\n'); } if (S.Length >= WMAX) { FLUSH(); } }
        public string STRING() { return R(s => s); }
        public string[] STRING(char c) { return R(s => s, c); }
        public string[] STRING(int l) { return R(s => s, l); }
        public string[][] STRING(int l, char c) { return R(s => s, l, c); }
        public int INT() { return R(int.Parse); }
        public int[] INT(char c) { return R(int.Parse, c); }
        public int[] INT(int l) { return R(int.Parse, l); }
        public int[][] INT(int l, char c) { return R(int.Parse, l, c); }
        public long LONG() { return R(long.Parse); }
        public long[] LONG(char c) { return R(long.Parse, c); }
        public long[] LONG(int l) { return R(long.Parse, l); }
        public long[][] LONG(int l, char c) { return R(long.Parse, l, c); }
        public double DOUBLE() { return R(double.Parse); }
        public double[] DOUBLE(char c) { return R(double.Parse, c); }
        public double[] DOUBLE(int l) { return R(double.Parse, l); }
        public double[][] DOUBLE(int l, char c) { return R(double.Parse, l, c); }
        public void WRITE(string s, bool lf = true) { W(v => v, s, lf); }
        public void WRITE(int s, bool lf = true) { W(v => v.ToString(), s, lf); }
        public void WRITE(long s, bool lf = true) { W(v => v.ToString(), s, lf); }
        public void WRITE(double s, bool lf = true) { W(v => v.ToString(), s, lf); }
        public void FLUSH() { Console.Write(S); S.Length = 0; }
    }
}

Measured memory_bytes: 24272