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8-6 City Name: Write a function called city_country () that accepts the name of the city and the country to which it belongs. This function should return a string with a format similar to the following:大学重逢便遇上酒后乱性，要不要这么刺激？One more thing to say is that I don't know why a hair flower was scratched at the junction of my toe and foot surface. Of course, I know why it was the shoe. I haven't worn this pair of shoes once or twice. I haven't found this kind of situation before. The reason is analyzed, because the product uses Australian Merino wool, which may need to be improved in wear resistance.　　▪ 帮死刑犯辩护而受尽谴责的_法扶律师板栗便不言语了。For the convenience of the experiment, we directly use the functions in libc.so.6 as the attack functions to be executed. This is a C program runtime in Linux, which holds a large number of available functions and contains system ("/bin/sh"). Therefore, we can use ROPgadget tool to obtain the code fragments that we can exploit, and use pwntool to exploit the vulnerabilities of vulnerable programs, thus achieving our attack purpose, that is, running system ("/bin/sh"). In order to facilitate the subsequent use of ROPgadget tool to find gadget and attack, it is necessary to copy the libc.so.6 file to the operation directory. First, use the "ldd" command to view the source directory, and then use the "cp" command to copy it to the operation directory.