using System;
using System.Linq;
class Program
{
private static Random random = new Random();
public static string random_password(int len) {
const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789~`!@#$%^&*()-_=+[{]}\\|;:\'\",<.>/?";
return new string(Enumerable.Repeat(chars, len).Select(s => s[random.Next(s.Length)]).ToArray());
}
static void Main()
{
Console.WriteLine(random_password(12));
}
}
/*
run:
]&OqUUnr>&Q*
*/