B.cpp

#include<iostream>
#include<string>
#include<vector>
using namespace std;
vector<string> arr;
bool search(string);
 
int main(void){
  int n;
  string str1, str2;
  cin >> n;
  cin >> str1;
  arr.push_back(str1);
  n--;
  for(int i = 0; i < n; i++){
    cin >> str2;
    if(str1[str1.length() - 1] != str2[0] || search(str2)){
      if(i&1) cout << "LOSE" << endl;
      else cout << "WIN" << endl;
      return 0;
    }
    arr.push_back(str2);
    str1 = str2;
  }
  cout << "DRAW" << endl;
  return 0;
}
 
bool search(string str){
  for(int i = 0; i < arr.size(); i++){
    if(arr[i] == str) return true;
  }
  return false;
}