Problem Brief

Find Number in Matrix 🌺

INTERNOA

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Input

The first line of input consists of two space-separated integers- matrix_row and matrix_col, representing the number of rows in the matrix (N) and the number of columns in the matrix (M), respectively. The next M lines consist of N space-separated integers representing the elements of the matrix.

Output

Print a number which is largest in a row and smallest in a column in the given matrix. If no element is found print "-1".

1Example 1

Input

matrix = [[1, 2], [3, 4]]

Output

Explanation

The number 2 at index (0,1) is the largest in its row and smallest in its column. So, the output is 2.

Constraints

Limits and guarantees your solution can rely on.

1 ≤ N, M ≤ 1000
Note: Each number in the matrix is a non-negative integer.

Draft autosaves locally

public int findNumberInMatrix(int[][] matrix) {
  // write your code here
}

Input

matrix

[[1, 2], [3, 4]]

Output