Wednesday saw the 315 contestants complete their final exam.
Many students had mascots on their desk beside them.
Some mascots represented their home country.
The difficult tasks set in Wednesday’s exam challenged the contestants.
A number of contestants chose to bring their own keyboards to use in the exam.
One of the seven girls competing in the IOI calculating a solution.
Australian contestant, Ishraq Huda was hard at work competing on his home ground.
Several volunteers supervised the contestants as they completed their exam.