Java program. please help me to solve this problem.Thanks.

* There is a board (matrix). Every cell of the board contains one integer, which is 0 initially. * The next operations can be applied to the Query Board: * SetRow ix : it means that all values in the cells on row " i " have been changed to value " x " after * this operation. * SetCol jx : it means that all values in the cells on column " j " have been changed to value " x " after * this operation. QueryRow i: it means that you should output the sum of values on row " in". * QueryCol j : it means that you should output the sum of values on column "j". * The board's dimensions are 256256 * " i " and " j " are integers from 0 to 255 xn is an integer from 0 to 31 * INPUT SAMPLE: * Your program should accept as its first argument a path to a filename. Each line in this file contains * an operation of a query. E.g. * SetCol 3220 * SetRow 157 * SetRow 1631 * QueryCol 32 * SetCol 214 * QueryRow 10 * SetCol 140 * QueryRow 15 * SetRow 101 * QueryCol 2 * OUTPUT SAMPLE: * For each query, output the answer of the query. E.g. * 5118 * 34 * 1792 * 3571