QOJ.ac

QOJ

Time Limit: 1 s Memory Limit: 32 MB Total points: 100

#321. Sticks

统计

Little Johnny was given a birthday present by his grandparents. This present is a box of sticks of various lengths and colours. Johnny wonders if there are three sticks in the set he has been given that would form a triangle with different-coloured sides. Let us note that Johnny is interested in non-degenerate triangles only, i.e., those with positive area.

Input Format

In the first line of the standard input an integer $k$ ($3 ≤ k ≤ 50$) is given, which is the number of different colours of sticks. The colours themselves are numbered from $1$ to $k$.

The following $k$ lines contain descriptions of the sticks of particular colours. The line no. i+1 holds integers that describe the sticks of colour i, separated by single spaces. The first of these numbers, $n_i$ ($1 ≤ n_i ≤ 1\,000\,000$), denotes the number of sticks of colour $i$. It is followed, in the same line, by ni integers denoting the lengths of the sticks of colour $i$. All lengths are positive and do not exceed $1\,000\,000\,000$. Furthermore, the total number of all sticks does not exceed $1\,000\,000$.

In tests worth at least $30\%$ of the points the following holds in addition: the total number of the sticks does not exceed 250.

Output Format

Your program should print (on the first and only line of the standard output) either:

  • six integers, separated by single spaces, that describe the construction of a triangle with different-coloured sides as follows: the colour and the length of the first stick, the colour and the length of the second stick, and the colour and the length of the third stick,
  • or the word NIE (Polish for no) if no such triple of sticks exists.

If there are multiple triples of different-coloured sticks that give rise to a triangle, your program may pick one such triple arbitrarily.

Sample Data

Sample Input

4
1 42
2 6 9
3 8 4 8
1 12

Sample Output

3 8 4 12 2 9