/* 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 sc = new Scanner(System.in);
		int num = sc.nextInt();
		int arr[] = new int[num];
		for(int i=0;i<num;i++) arr[i]=sc.nextInt();
		int k = sc.nextInt();
		Map<Integer,Integer> mp= new HashMap<>();
		int psum = 0;
		int min = num;
		mp.put(0,0);
		for(int i=0;i<num;i++){
			psum += arr[i];
			if(mp.containsKey(psum-k)){
				int left = mp.get(psum-k);
				min=Math.min(min,i-left+1);
			}
			mp.put(psum,i);
		}
		System.out.println(min);
	}
}

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

OAoxMCA1IDIgNyAxIDkgOCA3CjE1

8
10 5 2 7 1 9 8 7
15