fail = "011111111000000000000000000000000000000000000000000000000000000000000000000000000"
hard = "200000060000075030048090100000300000300010009000008000001020570080730000090000004"
easy = "487000503056000000031500090000840051070605030310072000060009310000000970703000825"
fail = "011111111000000000000000000000000000000000000000000000000000000000000000000000000"
hard = "200000060000075030048090100000300000300010009000008000001020570080730000090000004"
easy = "487000503056000000031500090000840051070605030310072000060009310000000970703000825"