Known： 28 = n1*8 + m1*3 + n2*5 + m2*4 （n1< 4 m1<6 n2< 4 m2< 6）
target= 28
vector<vector<int>> v( (8 4) (3 6) (5 4) (4 6)) //(value number) v.size() Is a positive number greater than 0，1，2，3，4，5。。。。。。。
(8 3 5 4) x (3 0 0 1) = 28
(8 3 5 4) x (2 4 0 0) = 28
(8 3 5 4) x (2 1 1 1) = 28
(8 3 5 4) x (2 0 0 3) = 28
(8 3 5 4) x (1 5 1 0) = 28
(8 3 5 4) x (1 4 0 2) = 28
(8 3 5 4) x (1 2 2 1) = 28
(8 3 5 4) x (1 1 1 3) = 28
(8 3 5 4) x (1 0 0 5) = 28
(8 3 5 4) x (0 5 1 2) = 28
(8 3 5 4) x (0 4 0 4) = 28
(8 3 5 4) x (0 3 3 1) = 28
(8 3 5 4) x (0 2 2 3) = 28
(8 3 5 4) x (0 1 1 5) = 28
(8 3 5 4) x (0 0 4 2) = 28
