Correct solution to IMO problem?
853
Write down the sum of sum of  sum of digits of $4444^{4444}$
43553
Which is optimal?
36661
GOTO still considered harmful?
13828
Canonical Post #2: What is the perfect, and how should I use it?
37091
The Dido problem with an arclength constraint
158880
Another take on canonical answers: Add a "canonical" vote
57020
SIB 2009, Problem #2
119135
How to deal with player MacGyver-ism?
34085
Need answer to an "if" question
40134
How can we resolve the current drama without causing any more harm to vulnerable groups?
7622
$AB-BA=I$ having no solutions
12090
On Negative AIC Values
24062
Best answer versus best solution
31932
Asking which way is better
23605
The bikeshed problem and Stack Exchange
137928
How do I decide what is a "reasonable" Suggestion?
13860
IMO/1981 - Combinatorics