iiitv/ChefLib

// Code written by Monal
#include"bits/stdc++.h"
#include<stdio.h>
using namespace std;

int main()
{
    int tc;
    scanf("%d",&tc);
    while(tc--)
    {
            int n;
            scanf("%d",&n);
            long int a[n],b[n],tmp;
            long long int o1,o2,e1,e2;
            o1=o2=e1=e2=0;
            for(int i=0;i<n;++i)
            {
                scanf("%ld",&tmp);
                if(i%2==0)
                    o1+=tmp;
                else
                    e1+=tmp;
            }
            for(int i=0;i<n;++i)
            {
                scanf("%ld",&tmp);
                if(i%2==0)
                    o2+=tmp;
                else
                    e2+=tmp;
            }
            long long int ans1=o1+e2;
            long long int ans2=o2+e1;
            printf("%lld\n", min(ans1,ans2));
    }
    return 0;
}