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Límite de tiempo: 1 s Límite de memoria: 256 MB Puntuación total: 100 Meme Task

#15342. Find the Pattern

Este problema fue utilizado en los siguientes concursos:

第十一届中国大学生程序设计竞赛重庆站热身赛（CCPC 2025 Chongqing, Warm up）

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

8, 24, 48, 120, (?)

Based on the first four integers, deduce what the next integer is.

Input

This problem contains only one test case. The input consists of four integers: 8, 24, 48, 120.

Output

Output a single line containing one integer representing the answer.

Examples

Input 1

8 24 48 120

Output 1

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