把1至10十个数分别填如下图的○内,使每个四边形顶点的○内四个数的和相等,且和最大.因如何解答呢
..○.○.○
.╱..╲..╱ ╲.╱...╲
○.○.○ ○
.╲..╱..╲..╱..╲..╱
..○.○.○
↓
↓
↓
....○...........○..........○
..╱.....╲...╱......╲...╱.....╲
○..........○..........○.........○
.╲.......╱...╲.....╱...╲.....╱
.....○..........○..........○ (这个图清楚点.....)