Evaluate Stock Portfolio

You are given a table of stock prices for three companies over n days. Each day, the table provides three integers representing the stock prices of the companies.

Your task is to compute two things:

• The average stock price for each company over the n days. The average should be calculated as
  $$\frac{\text{sum of prices}}{n}$$
  and formatted to exactly 2 decimal places.
• The percentage change of the stock price for each company from the first day to the last day. The percentage change is given by
  $$\frac{p_{last} - p_{first}}{p_{first}} \times 100$$
  If the price on the first day is zero, consider the percentage change to be 0.00%.

The result should be printed in two lines. The first line contains the three average prices separated by a space, and the second line contains the three percentage changes (each appended with a '%' symbol) separated by a space.

inputFormat

The input is given via standard input (stdin) and has the following format:

n
price1_1 price1_2 price1_3
price2_1 price2_2 price2_3
... 
pricen_1 prinen_2 prinen_3

Where:

• n is an integer representing the number of days.
• Each of the next n lines contains 3 integers, representing the stock prices for the three companies on that day.

outputFormat

The output should be printed to standard output (stdout) in the following format:

avg1 avg2 avg3
perc1% perc2% perc3%

Each average and percentage change must be formatted to exactly 2 decimal places. Note that for percentage changes, append a '%' symbol immediately after the number.

## sample

5
100 150 200
110 140 210
120 130 220
130 120 230
140 110 240

120.00 130.00 220.00
40.00% -26.67% 20.00%

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