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(2, minZeroArray(new ArrayList<>(Arrays.asList(2,0,2)), new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(0,2,1)),new ArrayList<>(Arrays.asList(0,2,1)),new ArrayList<>(Arrays.asList(1,1,3))))));
}
@Test
public void test2() {
    assertEquals(-1, minZeroArray(new ArrayList<>(Arrays.asList(4,3,2,1)), new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(1,3,2)),new ArrayList<>(Arrays.asList(0,2,1))))));
}
@Test
public void test3() {
    assertEquals(4, minZeroArray(new ArrayList<>(Arrays.asList(1,2,3,2,1)), new ArrayList<>(Arrays.asList(new ArrayList<>(Arrays.asList(0,1,1)),new ArrayList<>(Arrays.asList(1,2,1)),new ArrayList<>(Arrays.asList(2,3,2)),new ArrayList<>(Arrays.asList(3,4,1)),new ArrayList<>(Arrays.asList(4,4,1))))));
}

}