#include <string>
#include <vector>
#include <list>
#include <cmath>
#include <algorithm>
#include <map>
#include <set>
#include <iostream>
#include <cstdio>
#include <cstdlib>
using namespace std;

class Aircraft {
  public:
    string nearMiss(vector <int> p1, vector <int> v1, vector <int> p2, vector <int> v2, int R);
};

string Aircraft::nearMiss(vector <int> p1, vector <int> v1, vector <int> p2, vector <int> v2, int R)
{
  return "";
}