field turn: int field his_hist: int [] field my_hist: int [] field defect: int def start() -> void : if his_hist[turn -1] == 0 && his_hist[turn -2] == 0: defect = 1 elseif his_hist[turn -1] == 1 && his_hist[turn -2] == 0: defect = 1 else: defect = 0