using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;

class TEST{
	static void Main(){
		Sol mySol =new Sol();
		mySol.Solve();
	}
}

class Sol{
	public void Solve(){
		
		for(;T>0;T--){
			int N1,N2;
			var d = ria();
			N1 = d[0]; N2 = d[1];
			int M = ri();
			int[] A = ria();
			Array.Sort(A);
			long sum = 0;
			
			bool[] dp = new bool[N1+1];
			
			dp[0] = true;
			int ans = 0;
			
			for(int i=0;i<M;i++){
				sum += A[i];
				for(int j=N1;j>=0;j--){
					if(!dp[j])continue;
					if(j+A[i] <=N1){
						dp[j+A[i]] = true;
					}
				}
				
				for(int j=0;j<=N1;j++){
					if(!dp[j])continue;
					if( sum - j <= N2){
						ans = Math.Max(ans,i+1);
					}
				}
			}
			Console.WriteLine(ans);
		}
		
	}
	int T;
	public Sol(){
		T = ri();
	}

	static String rs(){return Console.ReadLine();}
	static int ri(){return int.Parse(Console.ReadLine());}
	static long rl(){return long.Parse(Console.ReadLine());}
	static double rd(){return double.Parse(Console.ReadLine());}
	static String[] rsa(char sep=' '){return Console.ReadLine().Split(sep);}
	static int[] ria(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>int.Parse(e));}
	static long[] rla(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>long.Parse(e));}
	static double[] rda(char sep=' '){return Array.ConvertAll(Console.ReadLine().Split(sep),e=>double.Parse(e));}
}