Dear all,
So far, I was only able to use two of the submitted parity solvers; perhaps it is because of typos in the specification of the input (some of the submitted solutions seem to wait for more data). Therefore I extend the deadline for this assignment. I also added nine (randomly generated) tests; so far, only solutions submitted by M. Mika and W. Adamski pass all the tests.
Jakub Michaliszyn