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,有几棵树,8,+,6,14,我把6分成2和4,8+6=,2,4,14,我把8分成4和4,8+6=,4,4,14,9+6=15,8+6=14,8+5=,13,6+8=,14,11,12,13,14,15,6+8,4+9,7+8,2+9,2+8,5+9,8+4,3+8,9+,1,2,3,4,5,6,7,8,9,11,10,12,13,14,15,16,=,17,18,8+,2,3,4,5,6,7,8,9,10,11,12,13,14,15,=,16,17,7+,3,4,5,6,7,8,9,10,11,12,13,14,=,15,16,6+,4,5,6,7,8,9,10,11,12,13,=,14,15,5+,5,6,7,8,9,10,11,12,=,13,14,
