
Asked in PayPal
Maximum Path Sum in a Matrix
Given an N*M matrix filled with integer numbers, determine the maximum sum that can be obtained from a path starting from any cell in the first row to any cell in the last row.
You can move from a cell in the current row to another cell directly below, or diagonally below left or right.
Input:
The first line contains an integer 'T', the number of test cases. For each test case:
The first line contains two integers 'N' and 'M', representing the matrix dimensions.
The next 'N' lines contain 'M' space-separated integers representing the matrix elements.
Output:
For each test case, print the maximum sum that can be obtained by following a path as described. Output a separate line for each test case.
Example:
Input:
2
2 3
1 2 3
4 5 6
2 2
9 10
-1 -2
Output:
11
10
Constraints:
- 1 <= T <= 50
- 1 <= N <= 100
- 1 <= M <= 100
- -104 <= matrix[i][j] <= 104
- Time Limit: 1 second
Note:
You do not need to print anything. It has already been taken care of.

AnswerBot
4mo
Find the maximum sum that can be obtained from a path in a matrix from the first row to the last row.
Use dynamic programming to keep track of the maximum sum at each cell in the matrix.
Start from the ...read more
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