TTENIS - Editorial

editorial
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link text My solution is showing wrong answer.I had checked it for many test cases and got correct output.
Can anyone find the mistake.

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gaddevarunteja,
You made the same mistake I just did. Problem statement isn’t clear enought (at least for non-english speaker). You use the rule “two ‘1’ in a row - win, tow ‘0’ in a row - lose”. It’s incorrect. You need to use (points1 - points2 == 2) --> win, (points2-points1==2) – lose.

1 Like
5

CodeChef: Practical coding for everyone MY SLUTION SHOWS WRONG ANSWER.CAN ANYONE HELP?

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iam getting wrong answer,i have checked everything is correct and getting correct input and output…please help!!!

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CodeChef: Practical coding for everyone please state what is wrong in my code…I desperately want to see where is the fault

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Hello,
I had written a code for this question, which got passed and I got AC.

My solution: https://www.codechef.com/viewsolution/17920124

But I figured out a test case (1010101010101010101011000), for which my solution will give “LOSE” but the author’s solution will give “WIN”. I know that my solution is wrong according to the question. Please check the test cases being used to check our codes.

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Whats wrong in my answer?
It is working fine,but giving wrong answer!!!
Can u tell where it fails?
Link to my WA solution
http://www.codechef.com/viewsolution/7198216

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I think you program suppose that if the score one time is 10-10 than the winner is who earn 1 pont sooner this is not true. E.g the :
10-10 -> 11-10 , 11-11, 12-11, 12-12, 12-13, 12-14 than the second player won, but your program will be answer the first won…

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@iscsi I think p1 won in this case, as p1 scored earliest 12 in the game after the draw. RIght?

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I think just checking the last character is always a sufficient condition to determine the winner. Because the last point is always won by the winner.So this should be just done in O(1).
This is the link to my solution:
https://www.codechef.com/viewsolution/30266292

1 Like
14

i didnt understand this question. can anyone explain me this question in easy way??

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Simple and easy c++ solution

int main() {

int t;
string s;
cin>>t;
while (t--)
{
	cin>>s;
	int zeroes=0,ones=0;
	bool flag = false;
	int index=0;
	while (index<s.length())
	{
		if (s[index]=='0') zeroes++;
		else ones++;
		if (ones>10 && ones-zeroes>=2)
	    {
	       flag=true; break;
		}
		index++;
	}
	if (flag) cout<<"WIN\n";
	else cout<<"LOSE\n";
}

return 0;

}

2 Likes
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test cases (1010101010101010101011000), is invalid according to problem

it can be only till 1010101010101010101011
as the chef points are 12, opponents pts are 10
and 12-10 = 2 pts lead for chef [ at the end of the 22nd match ]
GAME OVER !
no need to play those extra 3 match as the winner is already declared.

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I don’t understand why editorialist @ Kevin Atienza say “The last match is won by the overall winner of the contest.” where it is given in problem statement man?
Kindly please solve my doubt.

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1010101010101010101010
then why output is “LOSS” ?

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https://www.codechef.com/viewsolution/46614465
this is my solution…can anyone help where i am wrong?
@iscsi ?
i think i have taken every case given in question

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my opinion bhaii
@ketul22_12 bhai aapka input pe last 2 digits ke phle dono ke score becomes 10 and 10
to ab 2 consecutive win chahiye kisi ek user ke liye…your input is not a valid case according to question

22

Maybe try with this input:
1
111111111100000000000111

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@iscsi
i got WIN as answer
and i think it is correct…any other test case??

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What about this one?
1
11111111110000000000011000