import sys n, m = map(int, sys.stdin.readline().split()) numbers = list(map(int, sys.stdin.readline().split())) left = 0 right = 1 temp = 0 answer = 0 while left len(numbers): break temp = sum(numbers[left:right]) if temp m: left += 1 elif temp == m: answer += 1 left += 1 print(answer)