def parse(inFile):
    return tuple(inFile.getInts())

def solve((N,K)):
    return "OFF" if ((K + 1) & ((1 << N) - 1)) else "ON"

if __name__ == "__main__":
    from GCJ import GCJ
    GCJ(parse, solve, "/Users/lpebody/gcj/2010_q/", "a").run()