SDE Path

Count and Say Sequence

Medium

Count and Say Sequence

Generate the Nth term of the count-and-say sequence.

Input format

A single integer N (1 ≤ N ≤ 22).

Output format

Print the Nth term of the count-and-say sequence (term 1 is "1").

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
1
Expected output
1
Example 2
Input
2
Expected output
11