제출 #491577

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
491577		n3rm1n	Table Tennis (info1cup20_tabletennis)	C++17	0 / 100	16 ms	2860 KiB

tabletennis

#include<bits/stdc++.h>
#define endl '\n'
using namespace std;
const int MAXN=150005;
void speed()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
}
int n,k;
long long a[MAXN];
void read()
{
    cin>>n>>k;
    for(int i=1;i<=n;i++)
        cin>>a[i];
}
bool check(int idx)
{
    int i=1,j=n;
    if(i==idx)i++;
    if(j==idx)j--;
    long long sum=a[i]+a[j];
    i++;
    j--;
    while(i<j)
    {
       if(i==idx)i++;
       if(j==idx)j--;
       if(a[i]+a[j]!=sum)return false;
       i++;
       j--;
    }
    return true;
}
void solve_st1()
{
    for(int i=1;i<=n;i++)
    {
        if(check(i)==true)
        {
            for(int j=1;j<i;j++)
                cout<<a[j]<<" ";
            for(int j=i+1;j<=n;j++)
                cout<<a[j]<<" ";
            cout<<endl;
        }
    }
}
int main()
{
	speed();
	read();
	if(k==1&&n<=2000)
    {
        solve_st1();
    }
	return 0;
}

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