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Time Limit: 2 s Memory Limit: 512 MB Total points: 100

#2679. Campus Travel

The problem was used in the following contests:

2019 湖南省队选拔赛 Day 2 (HNOI 2019 Day 2)

AI Translation — This statement was translated using AI and may contain inaccuracies. Please refer to the original statement if in doubt.

Problem Statement

Given an integer $n$, you are required to process a sequence of length $n$.

Constraints

The constraints for the subtasks are as follows:

Subtask	$n$
1	$1 \leq n \leq 100$
2	$1 \leq n \leq 1000$
3	$1 \leq n \leq 5000$

Examples

Input 1

Output 1

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