CCC '13 S2 - Bridge Transport

//Ivan Li, Markville secondary school
import java.io.*;
import java.util.*;
    public class main{
  public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int w = sc.nextInt();
        int n = sc.nextInt();
        LinkedList<Integer> a = new LinkedList<Integer>();
        int count = 0;
        int b = 0;
    
      
       while (count<n){
          int temp = sc.nextInt();
            a.add(temp);
             b=b+temp;
            if (a.size()>4){
              int curr = a.poll();
              b=b-curr;
            
             
            }
           

            if(b>w){
              
            break;
        }
          if(b<=w){
            count++;
         
          }
         
           
        }
         
                    
            
                
      
        
    System.out.println(count);
  }
}