週末要去QTECH打醬油，現在補補省賽題，攢攢人品。

#include<iostream>
#include<algorithm>
#include<stdio.h>
//#define file
using namespace std;
struct data{
    double high;
    double weight;
};
bool cmp(data a,data b)
{
    return a.high<b.high;
}
int main()
{
    #ifdef file
    freopen("test.in","r",stdin);
    freopen("test.out","w",stdout);
    #endif // file
    data man[200];
    int t;
    cin>>t;
    while(t--)
    {
        int n;
        cin>>n;
        for(int i=0;i<n;i++)
        {
            cin>>man[i].high>>man[i].weight;
        }
        sort(man,man+n,cmp);
        double red=0,blue=0;
        for(int i=0;i<n;i++)
        {
            if(i%2==0)
                red+=man[i].weight;
            else
                blue+=man[i].weight;
        }
        if(red>blue)
            puts("red");
        else if(red<blue)
            puts("blue");
        else if(red==blue)
            puts("fair");
    }
    return 0;
}