Asterix Aig Na Geamannan Oilimpigeach (Asterix in Gaelic)

Asterix and his friends are in Greece, taking part in the Olympic Games. They're sure to win with the help of their magic potion, but the Olympic bosses won't allow any performance-enhancing substances. The Gauls are happy to play by the rules, but what about the Romans? Can the Gauls catch out the cheats?