Person in Charge

• 035966_L3

Attention

Please strictly follow the submission instructions.

Problem Background

While Sleeping Dolphin was halfway through preparing a problem, Long Long Giraffe came to visit...

Problem Description

Please complete the omitted proof in this solution (corresponding to the problem ).

Submission Method

Using the OEIS method suffices for the proof. Next.

1. The above is an example of a proof, which is clearly incorrect.
2. You need to fill in your Sleeping Cup UID in the code below and submit it in C++.
3. This problem will be manually graded after the contest, and the AC records will be updated accordingly, so it cannot be AC during the contest. If you submit multiple proofs, the last one will be considered. Please strictly follow the submission requirements above; otherwise, you will bear the consequences.

#include <bits/stdc++.h>
using namespace std;
const int UID = /*Enter your UID here*/;
int main()
{
    freopen("proof.in", "r", stdin);
    freopen("proof.out", "w", stdout);
    cout << UID;
    return 0;
}

4. Do not maliciously fill in the UID. Violators will be warned or banned.
5. The post-contest submission method is as follows, and the admin will grade submissions periodically.

#include <bits/stdc++.h>
using namespace std;
const int UID = (-1) * /*Enter your UID here*/;
int main()
{
    freopen("proof.in", "r", stdin);
    freopen("proof.out", "w", stdout);
    cout << UID;
    return 0;
}
/*
Using the OEIS method suffices for the proof. Next.
*/

Official Solution

link