Number Triangle
Print a triangle where row i lists 1 to i.
Input format
One line with a single integer N (the size of the pattern).
Output format
Print N rows; row i lists the numbers 1 to i, separated by single spaces.
Constraints
- Values fit in a 64-bit signed integer
- Trailing whitespace and a trailing newline are ignored by the judge
Read from stdin, write to stdout. Sample cases below show the exact format.
Sample cases
Example 1
Input
4Expected output
1
1 2
1 2 3
1 2 3 4Example 2
Input
5Expected output
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5