input:

4
1 2 1
42 69
2 3 1
1 2 3 4
2 5 1
6 1 3 4
5 19 1
1 7 8 9 10 11 12 13 14 20

output:

0
2
1
4

result:

wrong answer 1st numbers differ - expected: '-1', found: '0'