F. Be Good at Gaussing

📝 Solutions 🔵 仅限 C++

Problems Description

Give you many positive integer N (N<=23), for each N, just output N*(N+1)/2 integers in a single line, separated by space. (Don't ask me why.) For each N, the output line contains integers from 1 to N, and each just once. Again, do not ask me why, thank you. I'm so busy. But I can tell you a secret, the output has relationship with number triangle. As:(N=3)                    1                    2   6                    3   4   5 See the sample for more information.

Input格式

a positive integer N (N<=23).

Output格式

For each N, output N*(N+1)/2 integers in a single line, separated by a blank space.

Sample

Sample Input 1

3 4 2 6

Sample Output 1

1 2 6 3 4 5 1 2 9 3 10 8 4 5 6 7 1 2 3 1 2 15 3 16 14 4 17 21 13 5 18 19 20 12 6 7 8 9 10 11

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