DavidTan0527

Getting Started

For system security related challenges,

You will see a server endpoint nc xxx.xxx.xxx.xxx yyyy and an attached zip file.

The attached zip file will contain

1. The source code of the program
2. Compiled binary of the program
3. Makefile to compile the program

DavidTan0527

Python3 has many useful libraries (PyCryptodome) that can deal with Cryptography scheme.

Python3 differentiates string and bytes with the b'' syntax

s1 = b'abcd' # Bytes of 'abcd'
s2 = 'abcd' # String of 'abcd'

Here are some of the useful commands that is supported natively in Python3:

DavidTan0527

import java.io.*;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;

public class SpeedDemon {
    // Do not edit this method for contest submission
    public static void main(String[] args){
        long[] primes = {
            1, 1, 2, 3, 5, 7, 11, 13, 17, 19, -1, 23, 29, -1, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107,
            109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, 199, 211, 223, 227, 229,

DavidTan0527

IS1103-notes

Notes for IS1103 course on ethical views

PS: this note is written under my own understandings of the course and material, read at your own risk ;)

PPS: My friends and I used this note blindly, we all got A and A+ in the end :P

Structure of notes

1. There are 5 main ethical views, each has 3 components that define the ethical view it is under.
2. Each component has a definition, which is the first key-point.

DavidTan0527

#include <iostream>
#include <algorithm>
#include <cmath>
#include <queue>
#include <set>
#include <vector>
#include <string>
#include <string.h>
using namespace std;