Problem:
Score: 300 points

Problem Statement

In the Ancient Kingdom of Snuke, there was a pyramid to strengthen the authority of Takahashi, the president of AtCoder Inc.

The pyramid had center coordinates (C_X, C_Y) and height H. The altitude of coordinates (X, Y) is max(H - |X - C_X| - |Y - C_Y|, 0).

Aoki, an explorer, conducted a survey to identify the center coordinates and height of this pyramid. As a result, he obtained the following information:

C_X, C_Y was integers between 0 and 100 (inclusive), and H was an integer not less than 1.

Additionally, he obtained N pieces of information. The i-th of them is: "the altitude of point (x_i, y_i) is h_i."

This was enough to identify the center coordinates and the height of the pyramid. Find these values with the clues above.

Constraints

N is an integer between 1 and 100 (inclusive).

x_i and y_i are integers between 0 and 100 (inclusive).

h_i is an integer between 0 and 10^9 (inclusive).

The N coordinates (x_1, y_1), (x_2, y_2), (x_3, y_3), ..., (x_N, y_N) are all different.

The center coordinates and the height of the pyramid can be uniquely identified.

Input

Input is given from Standard Input in the following format:

N
x_1 y_1 h_1
x_2 y_2 h_2
x_3 y_3 h_3
:
x_N y_N h_N

Output

Print values C_X, C_Y and H representing the center coordinates and the height of the pyramid in one line, with spaces in between.

Sample Input 1

4
2 3 5
2 1 5
1 2 5
3 2 5

Sample Output 1

2 2 6

In this case, the center coordinates and the height can be identified as (2, 2) and 6.

Sample Input 2

2
0 0 100
1 1 98

Sample Output 2

0 0 100

In this case, the center coordinates and the height can be identified as (0, 0) and 100.

Note that C_X and C_Y are known to be integers between 0 and 100.

Sample Input 3

3
99 1 191
100 1 192
99 0 192

Sample Output 3

100 0 193

In this case, the center coordinates and the height can be identified as (100, 0) and 193.

Solution in Haskell (GHC 7.10.3) (judge verdict: Accepted)

import Control.Monad

main :: IO ()
main = do
  n <- readLn
  xyhs <- replicateM n $ map read . words <$> getLine
  let [xt, yt, ht] = head [ [x, y, h] | [x, y, h] <- xyhs, h > 0 ]
  putStrLn $ unwords $ map show $ solve xt yt ht xyhs

solve :: Int -> Int -> Int -> [[Int]] -> [Int]
solve xt yt ht xyhs =
  let
    (cx, cy) = head $ foldl (step xt yt ht) ((,) <$> [0 .. 100] <*> [0 .. 100]) xyhs
  in
    [cx, cy, ht + abs (xt - cx) + abs (yt - cy)]

step :: Int -> Int -> Int -> [(Int, Int)] -> [Int] -> [(Int, Int)]
step xt yt ht cxys [x, y, h] =
  [ (cx, cy)
  | (cx, cy) <- cxys
  , let ch = ht + abs (xt - cx) + abs (yt - cy)
  , h == (ch - abs (x - cx) - abs (y - cy)) `max` 0
  ]