help line no. is not working neither the link.
def read_mapped(func=lambda x:x):
return map(func, raw_input().split(" "))
def read_int():
return int(raw_input())
T = read_int()
for case in xrange(T):
n, k = read_mapped(int)
a = read_mapped(int)
low = 10000000000
low_c = 0
for i in xrange(len(a)):
for j in xrange(i+1, len(a)):
currr = abs(a[i]+a[j]-k)
if currr<low:
low = currr
low_c = 1
elif currr==low:
low_c += 1
print low, low_c