import java.util.Scanner; //Other imports go here, Do NOT change the class name class MatrixMultiplication { public static void main(String[] args) { Scanner sc=new Scanner(System.in); int x=sc.nextInt(); while(x>0) { int r1,c1,r2,c2,i,j; r1=sc.nextInt(); c1=sc.nextInt(); int arr[][]=new int[r1][c1]; for(i=0;i