Try to write an algorithm to determine in order to read into a @ for the letter at the end of sequence, whether the shape such as

Packet : 95302937group_common.rar filelist
group_common\array_common.c
group_common\array_common.h
group_common\chain_common.c
group_common\chain_common.h
group_common\group_common.h
group_common

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