任意输入一个数字并输入输出行数。该数是输出行数的整数倍。比如输入100，输出5行，那么将显示第一列从1-20，第二列21-30

依次类推最后一行是81-100。-Input a number and a number of input and output. This is the number of rows output integer times. As input and output of 100, so will display the first row from 1-20, 21-30 second

Turn on the last line is 81-100.