Options Trading Theory

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}

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import java.util.*;
import java.lang.*;
import java.io.*;

class GFG 
    public static void main (String[] args) 
        Scanner scanner = new Scanner(System.in);
        int t = scanner.nextInt();
        for (int i = 0; i < t; i++) 
            int n = scanner.nextInt();
            int[][] a = new int[n][n];
            for (int j = 0; j < n; j++) 
                for (int k = 0; k < n; k++) 
                    a[j][k] = scanner.nextInt();
                
            
            int[][] dp = new int[n][n];
            for (int j = 0; j < n; j++) 
                for (int k = 0; k < n; k++) 
                    dp[j][k] = a[j][k];
                
            
            for (int j = 1; j < n; j++) 
                for (int k = 0; k < n; k++) 
                    dp[j][k] += dp[j - 1][k];
                
            
            for (int j = 0; j < n; j++) 
                for (int k = 1; k < n; k++) 
                    dp[j][k] += dp[j][k - 1];
                
            
            int q = scanner.nextInt();
            for (int j = 0; j < q; j++) 
                int x1 = scanner.nextInt();
                int y1 = scanner.nextInt();
                int x2 = scanner.nextInt();
                int y2 = scanner.nextInt();
                int sum = dp[x2][y2];
                if (x1 > 0) 
                    sum -= dp[x1 - 1][y2];
                
                if (y1 > 0) 
                    sum -= dp[x2][y1 - 1];
                
                if (x1 > 0 && y1 > 0) 
                    sum += dp[x1 - 1][y1 - 1];
                
                System.out.println(sum);
            
        
    

```

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Options Trading Theory

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