import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;
import java.util.List;
import java.util.Arrays;
import java.util.ArrayList;
public class Main {
    //Program start
    
    //Program end

    @Test
public void test1() {
    assertEquals(new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(3,1)),new ArrayList<>(Arrays.asList(2,0)))), constructGridLayout(4, new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(0,1)),new ArrayList<>(Arrays.asList(0,2)),new ArrayList<>(Arrays.asList(1,3)),new ArrayList<>(Arrays.asList(2,3))))));
}
@Test
public void test2() {
    assertEquals(new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(4,2,3,1,0)))), constructGridLayout(5, new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(0,1)),new ArrayList<>(Arrays.asList(1,3)),new ArrayList<>(Arrays.asList(2,3)),new ArrayList<>(Arrays.asList(2,4))))));
}
@Test
public void test3() {
    assertEquals(new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(8,6,3)),new ArrayList<>(Arrays.asList(7,4,2)),new ArrayList<>(Arrays.asList(1,0,5)))), constructGridLayout(9, new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(0,1)),new ArrayList<>(Arrays.asList(0,4)),new ArrayList<>(Arrays.asList(0,5)),new ArrayList<>(Arrays.asList(1,7)),new ArrayList<>(Arrays.asList(2,3)),new ArrayList<>(Arrays.asList(2,4)),new ArrayList<>(Arrays.asList(2,5)),new ArrayList<>(Arrays.asList(3,6)),new ArrayList<>(Arrays.asList(4,6)),new ArrayList<>(Arrays.asList(4,7)),new ArrayList<>(Arrays.asList(6,8)),new ArrayList<>(Arrays.asList(7,8))))));
}

}