class KnightTask(Task):

    id = 'knight'
    tests = [
        Test(id='01', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='02', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='03', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='04', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='05', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='06', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='07', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='08', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='09', time=1.0, score=75.0/30.0, dat=None, chk=None),
        Test(id='10', time=1.0, score=75.0/30.0, dat=None, chk=None),
    ]

    def load_dat(self, stream):
        return Dat(N=self.read(stream, int))

    def load_chk(self, stream):
        return Chk(X=self.read(stream, long))

    def save_dat(self, stream, dat):
        self.write(stream, dat.N)

    def load_sol(self, stream):
        X = self.read(stream, long)
        self.read(stream, None)
        return Sol(X=X)