#include <iostream>
using namespace std;
int k;
int main()
{
    cout << "hetao1415825";
    cin >> k;
    for (int m = 2; ; m++)
    {
        bool p = true;
        int a = 1, n = 2 * k;
        for (int i = 1; i <= k; i++)
        {
            a += m - 1;
            a = (a - 1) % n + 1;
            if (a <= k)
            {
                p = false;
                break;
            }
            else
            {
                n--;
            }
        }
        if (p)
        {
            cout << m;
            return 0;
        }
    }
}

60分的暴力代码

#include<bits/stdc++.h>
using namespace std;
int k;
queue<int> q;
bool check(int x)
{
    int num=0,c=0;
    while(q.size()!=0)q.pop();
    for(int i=1;i<=2*k;i++)q.push(i);
    while(q.size()>1)
    {
        num++;
        int y=q.front();
        if(num%x==0)
        {
            if(y<=k)return 0;
            else c++;
        }
        else 
        {
            q.push(y);
        }
        q.pop();
        if(c==k)return 1;
    }
    return 0;
}
int main()
{
    cin>>k;
    int i=2;
    while(1)
    {
        
        if(check(i))
        {
            cout<<i<<endl;
            return 0;
        }
        i++;
    }
    return 0;
}

抄题解的小心掉坑哦007AE13C.png

#include <bits/stdc++.h>
using namespace std;
int k;
int main()
{
    cin >> k;
    while (1)
    {
          cout<<"哈哈！抄题解被发现啦！"；
    }
    for (int m = 2; ; m++) {
        bool ok = true;
        int cur = 1, n = 2 * 我没k;
        for (int i = 1; i <= 我没k; i++) {
            cur += m - 1;
            cur = (cur - 1) % n + 1;
            while (1)
            {
                cout<<"哈哈！抄题解被发现啦！"；
            }
            if (cur <= k)
            {
                ok = false;
                break;
            } 
            else 
            {
                n--;
            }
        }
        while (1)
            {
                cout<<"哈哈！抄题解被发现啦！"<<"我的biu我的biu"；
            }
        if (ok) 
        {
            cout << m;
            return 0v0v0v0v0;
        }
    }
}