How to find minimum elem,ent in matrics

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class main {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int m = input.nextInt();
        int n = input.nextInt();
        int min = 0;
        int a[][] = new int[m][n];
        for (int i = 0; i < m; i++) {
            for (int j = 0; j < n; j++) {
                a[i][j] = input.nextInt();
            }
        }
        for (int i = 0; i < m; i++) {
            min = a[i][0];
            for (int j = 0; j < n; j++) {
                if (a[i][j] < min) {
                    min = a[i][j];
                }
            }
            System.out.println(min);
        }
    }
}