矩阵相加（三元组）：

先建立稀疏矩阵的三元组存储结构。输入第一个矩阵的行数和列数和非零元素个数，并输入非零元所在位置和大小。输入第二个矩阵的非零元素个数并输入非零元所在位置和大小。然后处理这两个矩阵：若矩阵1中非零元素的行列值等于矩阵2中非零元素的行列值，只需将两非零元素相加；若矩阵1中非零元素的行列值不等于矩阵2中非零元素的行列值，分别记录其所在位置和大小。-Matrix addition (triples):

First create a sparse matrix storage structure triples. Enter the first matrix of rows and columns and the number of non-zero elements, and enter the location and size of the nonzero elements. Enter the second matrix and enter the number of non-zero elements of the location and size of the nonzero elements. Then deal with these two matrices: If non-zero elements of the matrix a value equal to the matrix 2 ranks in the ranks of the value of non-zero elements, simply add two nonzero elements　if non-zero elements of the matrix a is not equal to the ranks matrix 2 ranks of non-zero elements values ​ ​ were recorded in their location and size.