Description

9 cards are placed face down into a 3 by 3 square. Every card has a unique number. Two Players take turns to flip cards, the one gets the higher card win.

Given a table of how these cards are distributed, and which card the first player picked. Please write a C program to tell the first player’s win rate

Hint: win rate = (how many cards smaller than the first card number) / (9 – 1)

Note:

1. Use numbers ‘0~32,767’ to represent the cards number.
2. Have a ‘Space’ between any two numbers.

Input

A map with all nine cards are placed, and two integers X, Y that represents which card the first player picked.

Output

Output should follow below format:

R

Note that:

1. Need to have a return value('\n') at the end of your string.
2. R is a float number which should be rounded to the third decimal place
3. Unnecessary ‘zero’ digit should not be printed. E.g. (O) 0.25, (X) 0.250.

Sample Input  Download

Sample Output  Download

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