Problem Set 2003

[Problem 1 | Problem 2 | Problem 3 | Problem 4 | Problem 5 ]

[Problem 6 | Problem 7 | Problem 8 | Problem 9 | General Analysis]

Problem 1  
Submissions 122
Solutions 97
Fastest Solution 4 minutes
% Submissions Correct 79.5
% Teams Solving Problem 100
Description

This was a very simple problem which every team managed to solve. It required conversion of base 6 numbers to base 10. The normal digit symbols were not used, however.

Problem text (pdf format)

 

Problem 2  
Submissions 131
Solutions 92
Fastest Solution 13 minutes
% Submissions Correct 70.2
% Teams Solving Problem 94.8
Description

This was another simple problem requiring teams to arrange CD titles vertically.

Problem text (pdf format)

Problem 3  
Submissions 153
Solutions 91
Fastest Solution 11 minutes
% Submissions Correct 59.5
% Teams Solving Problem 93.8
Description

Our third simple problem involved a Caesar cipher. Many of the incorrect submissions were because the time limit was exceeded dealing with the large numbers in the judges data.

Problem text (pdf format)

Problem 4

  
Submissions 57
Solutions 17
Fastest Solution 52 minutes
% Submissions Correct 29.8
% Teams Solving Problem 17.5
Description

This was a problem of medium difficulty requiring teams to equalise water levels in connected tanks with the minimum number of valves open.

Problem text (pdf format)

Problem 5  
Submissions 110
Solutions 3
Fastest Solution 246 minutes
% Submissions Correct 2.7
% Teams Solving Problem 3.1
Description

This problem required teams to make life easier for Raul and George who were painting tiles for their father. It was intended to be of medium difficulty, but proved to be hard.

Problem text (pdf format)

Problem 6  
Submissions 126
Solutions 47
Fastest Solution 60 minutes
% Submissions Correct 37.3
% Teams Solving Problem 48.5
Description

Teams here had to work out how to match mobile phone key presses to stored numbers. It proved to be the easiest of our medium problems which nearly half the teams managed to solve.

Problem text (pdf format)

Problem 7  
Submissions 10
Solutions 0
Fastest Solution  
% Submissions Correct 0
% Teams Solving Problem 0
Description

Our first hard problem was about coloured grids. They had to be rotated to produce a specified pattern. It defeated all our teams!

Problem text (pdf format)

Problem 8  
Submissions 6
Solutions 2
Fastest Solution 160 minutes
% Submissions Correct 33.3
% Teams Solving Problem 2.1
Description

The second hard problem required teams to find a number of routes for a postal van.

Problem text (pdf format)

Problem 9  
Submissions 20
Solutions 8
Fastest Solution 114 minutes
% Submissions Correct 40.0
% Teams Solving Problem 8.2
Description

The final problem was about trees which are able to change their appearance! It proved to be the easiest of the hard problems.

Problem text (pdf format)

General Analysis

There were 96 registered teams in the contest. One unregistered team has also been included in the statistics.

Problems Solved
Number of Teams
Percentage of Teams
8
1
1
7
0
0
6
5
5.2
5
11
11.3
4
29
29.9
3
43
44.3
2
6
6.2
1
2
2.1
0
0
0

Average solutions 3.7 per team, best site Canberra, 4.5 solutions per team!

Site Created By: Nick Meek
Site Maintained By:Phil Robbins
Last Updated:September 2003