用python求100到999以内的水仙花数（不用除法求各项）

c = 0
for a in range(100,1000):
    for b in str(a):
        a1 = int(b)
        c =c+a1**3
    if a == c:
        print(a)
    c = 0

for a in range(100,1000):
    b = a%10
    c = a//10%10
    d = a//100
    if b**3+c**3+d**3 == a:
        print(a)