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In [ ]: import random n = int(input('请输入一个大于0的整数，回车结束。')) a = random.randint(1, 9) i = 0 s = 0 while i < n: i += 1 b = ((10**i - 1)/9) * a s += b print(s)
import random n = int(input('请输入一个大于0的整数，回车结束。')) a = random.randint(1, 9) i = 0 s = 0 while i < n: i += 1 b = ((10**i - 1)/9) * a s += b print(s)