Problem C: 倒三角数阵1815

Memory Limit:128 MB Time Limit:1.000 S
Judge Style:Text Compare Creator:
Submit:292 Solved:141

Description

输入一个整数N,输出一个倒三角数阵!

Input

一个整数N

Output

一个倒三角数阵

Sample Input Copy

5

Sample Output Copy

1 3 6 10 15
2 5 9 14
4 8 13
7 12
11

HINT


Source/Category