範囲に収まる数字の数（Pythonの場合）

#! /user/local/bin/python

num = []
chohuku =0

for line in open ('../data_d.txt','r'):
    if line == 0:
        break
    else:
        num.append(int(line))

width = num.pop(0);

num.sort(lambda x, y: y-x)

maxTimes =0

for i in range(len(num)-1):
    target = 0
    for j in range(len(num)-i):
        if num[i] - num[i+j] < width+1:
            target += 1
        else:
            break
    if maxTimes < target:
        maxTimes = target

print  maxTimes