Problem Description

Generate the nth term of the "look-and-say" sequence. The sequence starts with "1" and each subsequent term describes the previous term by counting consecutive identical digits.

Input Format

A single integer n (1-indexed position in sequence).

Output Format

The nth term of the look-and-say sequence as a string.

Constraints

• 1 ≤ n ≤ 30

• Sequence starts with "1" as the first term

• Each term describes the count and digit of consecutive groups

• Return result as a string

Sample Input/Output

Explanation

Sequence: 1st="1", 2nd="11" (one 1), 3rd="21" (two 1s), 4th="1211" (one 2, one 1). The 4th term is "1211".