/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner s = new Scanner(System.in);
 
        // Input size of the array
        int N = s.nextInt();
        int[] a = new int[N];
 
        // Input array elements
        for (int i = 0; i < N; i++) {
            a[i] = s.nextInt();
        }
 
        // Input the value of k
        int k = s.nextInt();
 
        // Sliding window logic
        int si = 0, sum = 0, maxlen = 0;
        for(int ei=0;ei<N;ei++) {
            sum += a[ei];  // Expand the window
 
            // Shrink the window while the sum exceeds k
            while (sum > k) {
                sum -= a[si];
                si++;
            }
 
            // Update maxlen if the current window satisfies the condition
            maxlen = Math.max(maxlen, (ei - si) + 1);
 
        }
 
        // Output the result
        System.out.println(maxlen);
 
        s.close();
    }
}
 

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4 3 -2 1 6 8 2
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