i have for 18 the first round pre 2010 were not bad devs but yea they tended to function in groups best, but that's likely just a human trait. i found it more like 6 in 10 for problem solving, not just code, but also the wider impact (qa, docs, support, customer, etc). i don't know where these guys were from in pajeetland, but they were well educated, polite, and willing to take feedback. outside of work there were 2 or 3 that were absolute dicks to their (arranged?) wives and refused to hang out with single people, only couples.
United States