import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
 
        int n = sc.nextInt();
        int k = sc.nextInt();
        int arr[] = new int[n];
		for (int i = 0; i < n; i++) {
            arr[i] = sc.nextInt();
        }
 
        int p[] = new int[n];
        p[0] = arr[0];
        for (int i = 1; i < n; i++) {
            p[i] = p[i - 1] + arr[i];
        }
 
        Map<Integer, Integer> hm = new HashMap<>();
        hm.put(0, 1);
        int count = 0;
 
        for (int j = 0; j < n; j++) {
            int RHS = p[j] - k * (j + 1);
            count += hm.getOrDefault(RHS, 0);
            int LHS = RHS;
            hm.put(LHS, hm.getOrDefault(LHS, 0) + 1);
        }
 
        System.out.println(count);
    }
}
 

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