Start 2025-03-12 00:00:00

蓝桥杯省赛训练计划

End 2025-05-19 17:09:31
Contest is over.
Now 2026-02-05 01:04:56

T. s01串

Description

s01串初始为"0"

按以下方式变换
 0变1，1变01

Input

1个整数(0~19)

Output

n次变换后s01串

Examples

Input

3

Output

101

Hint

【来源】蓝桥杯算法训练

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Time Limit 1 second
Memory Limit 256 MB
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