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returnm * (n / gcd(m, n)); // parentheses importantto avoid overflow } //returna * b, stavingoff overflow as much as possible by cross-cancellation publicRational times(Rational b) { Rationala = this; // reduce p1/q2 andp2/q1, thenmultiply, wherea = p1/q...
比如,我必须关闭某个服务,或者需要重启服务器,当然需要通知同时登录服务器的用户,这时就可以使用write命令。write命令的信息如下:命令名称:write。英文原意:send a message to another user。所在路径:/usr/bin/write。执行权限:所有用户。功能描述:向其他用户发送......
for sudo in sudoku: a = [int(s) for s in sudo] tmp.append(a) if solve_sudoku(tmp): result = print_sudoku(tmp) log.info(result) for line in result.split('\n'): p.send(line) #content = p.recv().decode() p.interactive() 单独的数独解密脚本: class SudoKu(): def __init__(...
This is just a short cut for manually reading each register one at a time, and it hand for doing a diff to see which registers changed. Install git clone https://github.com/bigjosh/phyreg cd phyreg make make install FAQ Q: Doesn't the driver keep reseting the values while you are ...
其中off_403508中有ida,ollydbg等,随便改掉(hex view f12修改,然后edit-patch program-apply...,也可以010直接改)。 这时可以先运行程序看看,大体就是等一段时间,然后就是常规的flag check,于是我们可以继续看代码逻辑。 后面一段代码,根据一个固定种子,生成随机数来异或脱壳一个函数401780: ...
There are named constants for pi, Golden Ratio, Silver Ratio, Apery Constant, Euler-Mascheroni Constant, and Yes and No as synonyms for .True. and .False. . I also define generic procedures and operators for a few common operations such as Greatest Common Di...
xgcd(k,q,k,k,k); fclose(fp); tmp1 = r; xgcd(r,q,r,r,r); // 1/r mod q multiply(k,s,tmp0); subtract(tmp0,hash,tmp0); multiply(r,tmp0,x); divide(x,q,q); // mod q hashing(flag, strlen(flag), hash); xgcd(r,q,r,r,r); // inverse the inverse of r xgcd...
通过搜索字符串发现了get shell的函数call_me_maybe,run_program函数中定义了一个大小为10的数组,漏洞出现在edit number的选项里,当我们输入的index大于10时,程序是不会报错的,而是会继续朝着高地址edit数据,因此只需要editrun_program栈中的ret为call_me_maybe, 这样当我们退出run_program函数时,程序就会返回到...
“If you want to compute a new target…”,并在最后设置新的target。 重要提示:对数是以一个任意的(未知的)基数给出的。 如果你想根据一个特定的生成元g来定义它们,那么你将不得不计算g的对数,然后用所有的对数除以这个值。 见https://lists.gforge.inria.fr/pipermail/cado-nfs-discuss/2018-November/00...