Codeforces Round 378 (Div. 2)
D
Kostya the Sculptor
Codeforces
1600
原题
← CE →
翻译中…

Kostya is a genial sculptor, he has an idea: to carve a marble sculpture in the shape of a sphere. Kostya has a friend Zahar who works at a career. Zahar knows about Kostya's idea and wants to present him a rectangular parallelepiped of marble from which he can carve the sphere.

翻译中…

Zahar has $*n*$ stones which are rectangular parallelepipeds. The edges sizes of the $*i*$-th of them are $*a*_{*i*}$, $*b*_{*i*}$ and $*c*_{*i*}$. He can take no more than two stones and present them to Kostya.

翻译中…

If Zahar takes two stones, he should glue them together on one of the faces in order to get a new piece of rectangular parallelepiped of marble. Thus, it is possible to glue a pair of stones together if and only if two faces on which they are glued together match as rectangles. In such gluing it is allowed to rotate and flip the stones in any way.

翻译中…

Help Zahar choose such a present so that Kostya can carve a sphere of the maximum possible volume and present it to Zahar.

翻译中…

Input

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The first line contains the integer $*n*$ ($1 ≤ *n* ≤ 10^{5}$).

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$*n*$ lines follow, in the $*i*$-th of which there are three integers $*a*_{*i*}, *b*_{*i*}$ and $*c*_{*i*}$ ($1 ≤ *a*_{*i*}, *b*_{*i*}, *c*_{*i*} ≤ 10^{9}$) — the lengths of edges of the $*i*$-th stone. Note, that two stones may have exactly the same sizes, but they still will be considered two different stones.

翻译中…

Output

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In the first line print $*k*$ ($1 ≤ *k* ≤ 2$) the number of stones which Zahar has chosen. In the second line print $*k*$ distinct integers from $1$ to $*n*$ — the numbers of stones which Zahar needs to choose. Consider that stones are numbered from $1$ to $*n*$ in the order as they are given in the input data.

翻译中…

You can print the stones in arbitrary order. If there are several answers print any of them.

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Note

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In the first example we can connect the pairs of stones:

翻译中…
  • $2$ and $4$, the size of the parallelepiped: $3 × 2 × 5$, the radius of the inscribed sphere $1$
  • $2$ and $5$, the size of the parallelepiped: $3 × 2 × 8$ or $6 × 2 × 4$ or $3 × 4 × 4$, the radius of the inscribed sphere $1$, or $1$, or $1.5$ respectively.
  • $2$ and $6$, the size of the parallelepiped: $3 × 5 × 4$, the radius of the inscribed sphere $1.5$
  • $4$ and $5$, the size of the parallelepiped: $3 × 2 × 5$, the radius of the inscribed sphere $1$
  • $5$ and $6$, the size of the parallelepiped: $3 × 4 × 5$, the radius of the inscribed sphere $1.5$
翻译中…

Or take only one stone:

翻译中…
  • $1$ the size of the parallelepiped: $5 × 5 × 5$, the radius of the inscribed sphere $2.5$
  • $2$ the size of the parallelepiped: $3 × 2 × 4$, the radius of the inscribed sphere $1$
  • $3$ the size of the parallelepiped: $1 × 4 × 1$, the radius of the inscribed sphere $0.5$
  • $4$ the size of the parallelepiped: $2 × 1 × 3$, the radius of the inscribed sphere $0.5$
  • $5$ the size of the parallelepiped: $3 × 2 × 4$, the radius of the inscribed sphere $1$
  • $6$ the size of the parallelepiped: $3 × 3 × 4$, the radius of the inscribed sphere $1.5$
翻译中…

It is most profitable to take only the first stone.

翻译中…

样例

Input #1
6
5 5 5
3 2 4
1 4 1
2 1 3
3 2 4
3 3 4
Output #1
1
1
InputCopy OutputCopy
Input #2
7
10 7 8
5 10 3
4 2 6
5 5 5
10 2 8
4 2 1
7 7 7
Output #2
2
1 5
InputCopy OutputCopy
题目信息
题号
733D
时间限制
3 s
内存限制
256 MB
标签
数据结构
哈希

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。