using System;
using System.IO;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using System.Numerics;
using System.Threading.Tasks;
using System.Text.RegularExpressions;
using static System.Math;
using Debug = System.Diagnostics.Debug;
using LayoutKind = System.Runtime.InteropServices.LayoutKind;
using MethodImplOptions = System.Runtime.CompilerServices.MethodImplOptions;
using MethodImplAttribute = System.Runtime.CompilerServices.MethodImplAttribute;


static class P
{
    static void Main()
    {
        string s = "ABCDEFGHIJKLMNOPQRSTUVWXZABCDEFGHIJKLMNPQRSTVWXYZ_BCDEFGHIJKLMNOPQSTUVWXYZABCDFGHIJKLMN OPQRSTUVWXYZ_ABCDEFHJKLMNOPQRSTUWXYZABCDFGHIJKLMOPQRSTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVXYZABCDEFGHIJKLMNPQRSTUVWXYZ_ABCDEFGHJKLMOPQRSUVWXYZABCDFHIJKLMNOPQRSTUVWXYZABCDFGHIJKLMNOPQ TUVWXYZ_ABCDEFGHIJKLMOPQRSTUVWXYZ_BCDEFGHIJKLMOPQRSTUVWXYZABCEFGHIJKLMNOPQRSTUVWXYZ_ABC DEFGHIJKLNOPQRSTUVWXYZ._ABCDEFGHIJKLMNOPQRSTUVWXZABCDEFGHIJKLMNPQRSTVWXYZABCDEFGHIJKLMN OPQSTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVWXYZBCDEFGHIJKLMNOPQRTUVWXYZABCDEFGHIJLMNOPQRSTUVWXYZ_ ABCDEFGHJKLMNOPQRTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVWXYZABCDEFGHIJKLMNPQRSTUVWXYZ_ABCDEGHJKLM OPQRSTUVWXYZABCEFGHIJKLMNOPQRSTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVWXYZABCDEFGIJKLMNOPQRSTUVWXY ZABCDFGHIJKLMNOPQRSTUVWXYZ_ABCDEGHIJKLMNOPQRSTUVWXYZBDEFGHIJKLMNOPQRSUVWXYZABCDEFGHIJKL MNPQSTUVWXYZABCDEFGHJKLMNOPQRSTUVWXYZBCDEFGHIJKMNOPQRSTUVWXYZ_ABCDEFGHIJKLMNPQRSTUVWXYZ ABCDEGHIJKLMNOPQRSTUVWXYZ_ABCDEFGHIJKLMOPQRSTUVWXYZ,_ABCDEFGHIJKLNPQRSTUVWXYZABCEFGHIJK LMNOPQRSTVWXYZABCDEFGHIJKMNPQRSTUVWXYZ_ABCDEFGHIJKLNOPQRSTUVWXYZ";
        Debug.WriteLine(
            string.Join(
                "", 
                s.Split('Z').Select(
                    x => {
                        Console.WriteLine(x);
                        return string.Join("",
                            x.TakeWhile(y => !char.IsUpper(y))
                        ) +
                        string.Join("",
                            Enumerable.Range((int)'A', 25).Except(x.SkipWhile(y => !char.IsUpper(y)).Select(y => (int)y)).Select(y => (char)y)
                        );
                    }
                )
            )
        );
        var nm = Console.ReadLine().Split().Select(int.Parse).ToArray();
        if(nm[0] > nm[1])
        {
            Console.WriteLine(0);
            return;
        }
        int res = 1;
        for (int i = 1; i < nm[0]; i++) res = (res * i) % nm[1];
        Console.WriteLine(res);
    }
}