import math
import copy

n, x = [ int(v) for v in input().split(" ") ]
number_list = [ int(v) for v in input().split(" ") ]


def add(a,b):
    return a + b


sumlist = [ list(map(add,number_list,[number_list[i]]*n)) for i in range(n) ]


print( sum( [ sumlist[i].count(x) for i in range(n) ] ) )