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Contest: Task: Related: TaskA TaskC

Score : $200$ points

Problem Statement

Find the $N$ integer sequences $A_0,\ldots,A_{N-1}$ defined as follows.

  • For each $i$ $(0\leq i \leq N-1)$, the length of $A_i$ is $i+1$.
  • For each $i$ and $j$ $(0\leq i \leq N-1, 0 \leq j \leq i)$, the $(j+1)$-th term of $A_i$, denoted by $a_{i,j}$, is defined as follows.
    • $a_{i,j}=1$, if $j=0$ or $j=i$.
    • $a_{i,j} = a_{i-1,j-1} + a_{i-1,j}$, otherwise.

Constraints

  • $1 \leq N \leq 30$
  • $N$ is an integer.

Input

Input is given from Standard Input in the following format:

$N$

Output

Print $N$ lines. The $i$-th line should contain the terms of $A_{i-1}$ separated by spaces.

Sample Input 1

3

Sample Output 1

1
1 1
1 2 1

Sample Input 2

10

Sample Output 2

1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
1 6 15 20 15 6 1
1 7 21 35 35 21 7 1
1 8 28 56 70 56 28 8 1
1 9 36 84 126 126 84 36 9 1