Gym

bryce1010模板
http://codeforces.com/gym/101810

#include <bits/stdc++.h>

using namespace std;
#define ll long long
const int MAXN=1010;
int a[MAXN<<1];
int main()
{

    int t;
    cin>>t;
    int n;
    while(t--)
    {
        cin>>n;

        for(int i=1;i<=2*n;i++)
        {
            cin>>a[i];
        }
        int maxsum=0;
        for(int i=1;i<=n;i++)
        {
            maxsum=max(maxsum,a[i]+a[2*n-i+1]);
        }
        cout<<maxsum<<endl;
    }


    return 0;
}