def Combinatorial(n, i):'''设计组合数'''Min = min(i, n )if Min == 0:return 0elif Min == 1:return max(n, i)else:return i * nreturn result
print("1")
result=Combinatorial(1,0)
print("combination",result)
print("2")
result=Combinatorial(1,1)
print("combination",result)
print("3")
result=Combinatorial(2,1)
print("combination",result)
print("4")
result=Combinatorial(2,3)
print("combination",result)
print("5")