import java.util.Random;
 
public class Main {
    public static void main(String[] args) {
        int n = 5;
        int m = 10;
        int[][] B = new int[n][m];
        Random rand = new Random();
 
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                B[i][j] = rand.nextInt(101) - 50;
            }
        }
 
        System.out.println("Початкова матриця B(" + n + "x" + m + "):");
        printMatrix(B);
 
        int max_val = B[0][0];
        int max_row = 0;
        int max_col = 0;
 
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < m; j++) {
                if (B[i][j] > max_val) {
                    max_val = B[i][j];
                    max_row = i;
                    max_col = j;
                }
            }
        }
 
        System.out.println("\nНайбільший елемент матриці: " + max_val);
        System.out.println("Його позиція: рядок " + max_row + ", стовпець " + max_col);
 
        for (int j = 0; j < m; j++) {
            B[max_row][j] = 0;
        }
 
        for (int i = 0; i < n; i++) {
            B[i][max_col] = 0;
        }
 
        System.out.println("\nЗмінена матриця B:");
        printMatrix(B);
    }
 
    public static void printMatrix(int[][] matrix) {
        for (int i = 0; i < matrix.length; i++) {
            for (int j = 0; j < matrix[i].length; j++) {
                System.out.printf("%5d", matrix[i][j]);
            }
            System.out.println();
        }
    }
}

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