easyctf-2017/problems/misc/survey

Problem Format

This survey problem serves as an example for future problems. Each problem must be placed in its own directory, under the directory of its category (for organization). For the name of the folder, please use the ID of the problem (pid), which should be the name of the problem represented by lowercase words separated by dashes; don't include problem value. The program will automatically load the problems into the database.

The directory must contain a problem.json; this information will be loaded into the database. Refer to the following example:

{
	"pid": "survey",					// required
	"title": "Survey",					// required
	"description": "Take our survey.",	// required - can use HTML
	"hint": "No hint!",					// optional - defaults to ""
	"category": "Miscellaneous",		// required
	"autogen": false,					// optional - defaults to false
	"programming": false,				// optional - defaults to false
	"value": 20,						// required - integer out of 800
	"bonus": 0,							// optional - defaults to 0; see below for details
	"threshold": 0,						// recommended - defaults to 0; see below for details
	"weightmap": { }					// recommended - defaults to {}
}

Bonus Points

Bonus points encourage teams to finish solving a problem first. Rather than an array of three values like last year, we're going to have bonus-point templates. Each of the following integers is a code for a certain "template", and bonus points will be assigned accordingly.

Code	3rd	2nd	1st
0	0%	0%	0%
1	1%	2%	3%
2	1%	3%	5%
3	3%	5%	8%
4	6%	8%	10%
5	8%	12%	20%

The table indicates how many percent bonus a team should receive if they solve a problem first, second, or third. Low problems such as the survey should not yield bonus points; only high-valued points should have bonus points in order to encourage teams t o solve them first.

Problem Unlocking

Problem unlocking is managed through a mechanism that involves a threshold and weightmap. The weightmap is a dictionary mapping problem IDs to weight. The threshold is the minimum amount needed in order to unlock that particular problem. Take, for example, an abridged version of last year's Launch Code problem's JSON:

{
	"pid": "launch-code",
	"threshold": 5,
	"weightmap":	{
		"php3": 1,
		"faster-math": 1,
		"biggerisbetter": 1,
		"cave-johnson": 1,
		"blackmesa": 1,
		"rsa3": 1,
		"yandere": 1,
		"rsi": 1,
		"adoughbee": 1,
		"infinity_star": 1
	}
}

That means in order to unlock Launch Code, a team would have to have solved five of the problems listed, since each problem has weight 1. It's also possible to add higher weights to a particular problem to promote solving that problem.