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Wrong submission for Mix Mix Game

For August LunchTime Mix Mix Game(https://www.codechef.com/LTIME63B/problems/JAGAM)

After seeing the editorial explanation, my approach was to find if

  1. for first turn check if adding or subtracting of a number leads to z1 or z2
    • if so, player 1 wins
  2. for second turn, choose a pair of number from the array, say "a" and "b"
    • calculate a+b, a-b, -a+b, -a-b
    • check if any one of them is equal to z1 or z2
    • if so, then second player wins
  3. Else tie

Here I have implemented my logic. Where am I doing wrong?

asked 27 Aug '18, 18:59

ujjaldas1997's gravatar image

2★ujjaldas1997
31
accept rate: 0%


I didn't read code, but with given explanation, this should be wrong case for your appraoch:

$n=2, Z_1=5, Z_2=5$

$A$={$2, 3$}

In this case answer is Tie: first player can put $-3$ and copy next moves of second player.

link

answered 27 Aug '18, 19:48

allllekssssa's gravatar image

5★allllekssssa
1164
accept rate: 33%

Because of my wrong interpretation, I had a series of wrong submission XD. Thanks man, you saved my day.

(27 Aug '18, 21:51) ujjaldas19972★
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question asked: 27 Aug '18, 18:59

question was seen: 180 times

last updated: 27 Aug '18, 18:59