6 5 2 3 0

1

6

1 2 1 1 1
2 5 -1
2
0

2 3 0 1 0
1 0 4
0

5 4 1 1 0
1 0 4
0

1 5 0 1 1
1 2 -1
2
0

4 3 0 1 0
2 5 -1
0


// edit the ages for checking emptiness
