N,mod=map(int,input().split())
dp=[0]*3
dp[2]=1
score=[0]*3
score[2]=1
result=1
for x in range(1,2*N):
  result*=x
  result%=mod
for i in range(1,2*N-1):
  dp2=[0]*3
  score2=[0]*3
  for j in range(3):
    for k in range(3):
      if j==2 and k==0:
        continue
      dp2[k]+=dp[j]
      dp2[k]%=mod
      if k<=j:
        score2[k]+=score[j]
      elif k==1 and j==0:
        score2[k]+=score[j]*(i-1)
      elif k==2 and j==1:
        score2[k]+=score[j]*i
      else:
        w=score[j]*i
        w%=mod
        w*=i-1
        w%=mod
        score2[k]+=w
      score[k]%=mod
  dp=dp2
  score=score2
  if i%2==0:
    result*=score[0]
    result%=mod
print(result)