#include <iostream>
using namespace std;
int main(){
    int Times, Target, M, step;
    cin >> Times;

    while(Times > 0){  // Times 代表有幾個回合的側資
    	cin >> Target >> M; // M 代表要走幾次
        while(M > 0){
       	    cin >> step;
            Target = Target - step; // 每次去減掉走的步數
            M = M - 1;
        }
        if(Target != 0){
           cout << "LOSE" << endl;
        }else{
        	cout << "WIN" << endl;
        }
        Times = Times - 1;
    }
    return 0;
}