Input n group ID number, the number of the first acts, after the ID number for each behavior. ID number output if the input is 15, then upgrade it to 18 after the display output otherwise, determine whether it is legitimate ID number, and progressive output.

身份证的奥秘（选做）.cpp
身份证的奥秘（选做）.dsp
身份证的奥秘（选做）.dsw
身份证的奥秘（选做）.ncb
身份证的奥秘（选做）.opt
身份证的奥秘（选做）.plg

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