Demo contest includes the following types of problems

Problems with checker are standard programming problems. The system executes the participant’s code, passes the test data to the input, and then compares the resulting output with the reference answer.

Interactive problems involve the system running an interactive program, passing the received data to the participant’s solution, receiving the answer, and returning it to the interactive program.

Run twice problems involve the participant’s solution being executed twice. This format is commonly used for encoding and decoding problems.

Test problems require selecting one or more correct answers from a list of options.

Text answer problems involve entering an answer in a text field (either single-line or multi-line). The response pattern and maximum length can be customized.

Problems with match sets involve establishing a correspondence between the provided answer options.