[gcj] Magic Trick problem mistake (?)

2014-04-13 Thread newbie007
Hi, If in the second arrangement, the cards from the first chosen row are not all in different rows, then he IS a Bad magician! I know that the magician may be luck and still be able to find the card depending on the volunteer choices, but it doesn't change the fact that he IS a Bad magician!

Re: [gcj] Magic Trick problem mistake (?)

2014-04-13 Thread Leopoldo Taravilse
The problem statement is very clear on when he is a bad magician. From the problem statement: If there are multiple cards the volunteer could have chosen, y should be Bad magician! So it doesn't matter if in real life that would be a bad magician. In the problem it's only a bad magician only in

Re: [gcj] Magic Trick problem mistake (?)

2014-04-13 Thread Xiongqi ZHANG
Sometimes you cannot interpret the problem using your own understanding of Bad magician The description is fairly clear. --- ​​ If there is a single card the volunteer could have chosen, y should be the number on the card. If there are multiple cards the volunteer could have chosen, y should be