if False:
    s = 'ABCDEFGHIJKLMNOPQRSTUVWXZABCDEFGHIJKLMNPQRSTVWXYZ_BCDEFGHIJKLMNOPQSTUVWXYZABCDFGHIJKLMN OPQRSTUVWXYZ_ABCDEFHJKLMNOPQRSTUWXYZABCDFGHIJKLMOPQRSTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVXYZAB CDEFGHIJKLMNPQRSTUVWXYZ_ABCDEFGHJKLMOPQRSUVWXYZABCDFHIJKLMNOPQRSTUVWXYZABCDFGHIJKLMNOPQ TUVWXYZ_ABCDEFGHIJKLMOPQRSTUVWXYZ_BCDEFGHIJKLMOPQRSTUVWXYZABCEFGHIJKLMNOPQRSTUVWXYZ_ABC DEFGHIJKLNOPQRSTUVWXYZ._ABCDEFGHIJKLMNOPQRSTUVWXZABCDEFGHIJKLMNPQRSTVWXYZABCDEFGHIJKLMN OPQSTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVWXYZBCDEFGHIJKLMNOPQRTUVWXYZABCDEFGHIJLMNOPQRSTUVWXYZ_ ABCDEFGHJKLMNOPQRTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVWXYZABCDEFGHIJKLMNPQRSTUVWXYZ_ABCDEGHJKLM OPQRSTUVWXYZABCEFGHIJKLMNOPQRSTUVWXYZ_ABCDEFGHIJKLMNOPQRSUVWXYZABCDEFGIJKLMNOPQRSTUVWXY ZABCDFGHIJKLMNOPQRSTUVWXYZ_ABCDEGHIJKLMNOPQRSTUVWXYZBDEFGHIJKLMNOPQRSUVWXYZABCDEFGHIJKL MNPQSTUVWXYZABCDEFGHJKLMNOPQRSTUVWXYZBCDEFGHIJKMNOPQRSTUVWXYZ_ABCDEFGHIJKLMNPQRSTUVWXYZ ABCDEGHIJKLMNOPQRSTUVWXYZ_ABCDEFGHIJKLMOPQRSTUVWXYZ,_ABCDEFGHIJKLNPQRSTUVWXYZABCEFGHIJK LMNOPQRSTVWXYZABCDEFGHIJKMNPQRSTUVWXYZ_ABCDEFGHIJKLNOPQRSTUVWXYZ.'
    s = s.replace(' ','')
    for s1 in s.split('Z'):
        for c in 'ABCDEFGHIJKLMNOPQRSTUVWXY':
            if c not in s1:
                print(c, end='')
        print()
N,M=map(int,input().split())
ans=N
for i in range(1,N):
    ans*=i
print(ans%M)