print(r"""
 ____    ___   ____   ______   _____    __   ____  ____  
|    \  /   \ |    \ |      | / ___/   /  ] /    ||    \ 
|  o  )|     ||  D  )|      |(   \_   /  / |  o  ||  _  |
|   _/ |  O  ||    / |_|  |_| \__  | /  /  |     ||  |  |
|  |   |     ||    \   |  |   /  \ |/   \_ |  _  ||  |  |
|  |   |     ||  .  \  |  |   \    |\     ||  |  ||  |  |
|__|    \___/ |__|\_|  |__|    \___| \____||__|__||__|__|
                                    by yangge
""")
    print("---------------------------------------------------")
    print("example：python portscan.py 10.10.10.1 10.10.10.254")