n=3的一些解
.......0............0............0............0............0............0
......0.0..........0.0..........0.0..........0.0..........0.0..........0.0
.....0.1.0........0.3.0........3.0.3........3.0.0........0.1.0........3.0.0
....0.0.0.0......3.0.1.0......0.3.3.0......0.3.0.0......0.0.3.0......0.3.3.0
…0.0.0.0.1…0.0.0.0.0…0.0..3.3.3…0.0.0.0.3…0.0..3.0.0…0.0..3.3
..0.0.0.3.0.3..0.0.1.0.0.0..0.0.0.0.0.1..0.0.0.0.1.0..0.0.3.3.0.0..0.0.1.0.0.1
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