Hi Alex,
I haven't tried it during the contest, but here comes what I think about
your solution.
Let's say N = 100 so you send the numbers {1, 2, 3, ..., 100} to the judge.
Let's assume the judge sends you back {101, 10^9, 10^9-1, ..., 10^9-98}.
It's possible since the only guarantee given is that the sum of the 2N
numbers will be even.
Now let's start with the "big" numbers: we have 99 of them: 10^9,
10^9-1,...,10^9-98. Any partition of these numbers into to disjoint subsets
will create two sums with difference bigger than 10^8. (One of the subsets
will have more elements than the other.) Now all the small numbers
(1,2,3,..,101) are not enough to make up for this big difference since
1+2+3+...+101 < 10^8
Regards,
Peter
karpov...@gmail.com a következőt írta (2022. április 18., hétfő, 17:03:03
UTC+2):
> Hi expert.
> I am a beginner in Python.
> I try to solve Equal Sum problem, but my submission is failed and I can't
> see test cases.
> Sample test cases are successful.
> Maybe someone can help with fix code below.
>
> *def getX(nums,x):*
>
> * for i in nums:*
> * if sum(x) == sum(nums):*
> * return x*
>
> * x.insert(0,i)*
> * nums.remove(i)*
> * if sum(x) == sum(nums):*
> * return x*
> * elif sum(x) > sum(nums):*
> * x.remove(i)*
> * nums.insert(0,i)*
> * else:*
> * getX(nums,x)*
>
> *def main():*
> * T = int(input())*
> * for t in range(1, T+1):*
> * N = int(input())*
>
> * A = [i for i in range(N)]*
> * print(*A, flush=True)*
>
> * *B, = map(int, input().split())*
>
> * N = A+B*
>
> * N.sort(reverse=True)*
>
> * X = getX(nums=N,x=[])*
>
> * print(*X, flush=True)*
>
> *main()*
>
> Best Regard, Alex.
>
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