SumOf2DArray

//You are given two matrices (2D array). The first array A (n rows and m columns) and second array B (i rows and j columns).
//Output sum of the matrix which is greater than the sum of other matrix.

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    // first matrix
    int sumOfA=0;
    int n=sc.nextInt();
    int m=sc.nextInt();
    sc.nextLine();
    int[][] A=new int[n][m];
    for(int a=0; a<n;a++){
      for(int b=0; b<m; b++){
        A[a][b]=sc.nextInt();		//i can also add the element here and comapre later rather using two more loop
    	
      }
    }
    
    sc.nextLine();
    // second matrix
     int sumOfB=0;
    int i=sc.nextInt();
    int j=sc.nextInt();
    sc.nextLine();
    int[] [] B=new int[i][j];
    for(int k=0; k<i; k++){
      for(int l=0; l<j; l++){
        B[k][l]=sc.nextInt();
         
      }
    }
 
 // first matrix sum
    int sumOfA=0;
    for(int a=0; a<n; a++){
      for(int b=0; b<m; b++){
        sumOfA=sumOfA+A[a][b];
      }
    }
    
    //second matrix sum
    int sumOfB=0;
    for(int k=0; k<i; k++){
      for(int l=0; l<j; l++){
        sumOfB=sumOfB+B[k][l];
      }
    }
    
      if(sumOfA>sumOfB){
      System.out.println(sumOfA);
    }
    else{
      System.out.println(sumOfB);
    }
    
    }
    }
    
    /*
    Other Solution 
    //You are given two matrices (2D array). The first array A (n rows and m columns) and second array B (i rows and j columns).
//Output sum of the matrix which is greater than the sum of other matrix.

import java.util.Scanner;
public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    // first matrix
    int sumOfA=0;
    int n=sc.nextInt();
    int m=sc.nextInt();
    sc.nextLine();
    int[][] A=new int[n][m];
    for(int a=0; a<n;a++){
      for(int b=0; b<m; b++){
        A[a][b]=sc.nextInt();		//i can also add the element here and comapre later rather using two more loop
    	 sumOfA=sumOfA+A[a][b];
      }
    }
    
    sc.nextLine();
    // second matrix
     int sumOfB=0;
    int i=sc.nextInt();
    int j=sc.nextInt();
    sc.nextLine();
    int[] [] B=new int[i][j];
    for(int k=0; k<i; k++){
      for(int l=0; l<j; l++){
        B[k][l]=sc.nextInt();
        sumOfB=sumOfB+B[k][l];		// calculating sum here only
         
      }
    }
    
      if(sumOfA>sumOfB){
      System.out.println(sumOfA);
    }
    else{
      System.out.println(sumOfB);
    }
    
    }
 }
    */