n=4的一些解
-10..-10..-12..-13..-11..-11..-10..-10..-10..-12..-9..-9..-11..-9..-9
..4....4....4....6....7....7....4....4....3....4...-1....3....7....6...-1....7
.-2...-3...-3...-3...-2...-3...-2...-6...-3...-1....3...-1...-9...-3...11...-9
.-3....7....9....7....2....4....2....9....8...-1....5....1....8....5..-11....9
..8...-4..-10...-8...-6...-5....3....0...-5....7...-8....3...-5...-2....6...-6
.-4...-3....2...-1....6....3...-5..-10...-5...-8....0...-7....5...-4...-3....0
..3....4....5....8...-2...-2....3....6....9....4....6....4...-5....4....0....4
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