Losail International Circuit grass to stop the sand encroaching on the track. It happens to be somewhat similar to the Bahrain International Circuit in Sakhir. In 2007, Losail added permanent outdoor lighting for night races. At the time, the lighting of the Losail Circuit by Musco Lighting was the largest permanent venue sports lighting project in the world, a distinction that now belongs to another Gulf motorsport venue, Yas Marina Circuit in Abu Dhabi. The first night race in MotoGP history was the Commercialbank Grand Prix of Qatar in March 2008. In February 2009, a GP2 Asia Series nighttime race took place. Best
Circuit satisfiability problem finding inputs that make the circuit output 1. (The converse, that SAT is reducible to CircuitSAT, is even easier—we simply rewrite the Boolean formula as a circuit and solve that.) Circuit satisfiability problem In theoretical computer science, the circuit satisfiability problem (also known as CIRCUIT-SAT, CircuitSAT, CSAT, etc.) is the decision problem of determining whether a given Boolean circuit has an assignment of its inputs that makes the output true. CircuitSAT has been proven to be NP-complete. In fact, it is a prototypical NP-complete problem; the Cook–Levin theorem is sometimes proved on CircuitSAT instead of on SAT for Boolean expressions