输入
4 (repeat=4)
0 (in=0)
23456 (in=23456)
-100 (in=-100)
-1 (in=-1)
输出
count = 1, sum = 0 (0的位数是1, 各位数字之和是0)
count = 5, sum = 20 (23456的位数是5, 各位数字之和是20)
count = 3, sum = 1 (-100的位数是3, 各位数字之和是1)
count = 1, sum = 1 (-1的位数是1, 各位数字之和是1)