Simplified Sudoku

//package kilpaohjelmointi;



import java.util.Scanner;

/**
 *
 * @author madwarge
 */
public class Kilpaohjelmointi {

  
    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        
        int n = s.nextInt();
        
        int[][] t = new int[n][n];
        
        for (int i = 0; i < t.length; i++) {
            for (int j = 0; j < t.length; j++) {
                t[i][j] = s.nextInt();         
            } 
        }
        
        boolean vastaus = true;
        
        //rows
        for (int i = 0; i < t.length; i++) {
            boolean[] tarkistus = new boolean[n + 1];
            for (int j = 0; j < t.length; j++) {
                if(tarkistus[t[i][j]] == true) {
                    vastaus = false;
                } else {
                    tarkistus[t[i][j]] = true;
                }
            } 
        }
        
        //columns
        for (int i = 0; i < t.length; i++) {
            boolean[] tarkistus = new boolean[n + 1];
            for (int j = 0; j < t.length; j++) {
                if(tarkistus[t[j][i]] == true) {
                    vastaus = false;
                } else {
                    tarkistus[t[j][i]] = true;
                }
            } 
        }
        
        if(vastaus) {
            System.out.println("YES");
        } else {
            System.out.println("NO");
        }
       
    }
    
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: ACCEPTED

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED