In [4]:

    

print('please enter an int ')
m=int(input())
print('please enter an int,and the int !=0')
n=int(input())
print('please enter 1 means 乘法 2 means 加法 or 3 means取余 or others means m整除n')
a=int(input())
if a==1:
    if m>=n:
        c=1
        b=n
        while b<=m:
            c=c*b
            b=b+1
        print('1',c)
    else:
        c=1
        b=m
        while b<=n:
            c=c*b
            b=b+1
        print('1',c)
elif a==2:
    if m>=n:
        i=m-n
    else:
        i=n-m
    x=(m+n)*(i+1)/2
    print('2',x)
elif a==3:
    k=m%n
    print('3',k)
else:
    z=int(m/n)
    print('others',z)


    

    




please enter an int 
1
please enter an int,and the int !=0
3
please enter 1 means 乘法 2 means 加法 or 3 means取余 or others means m整除n
3
3 1

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