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competitive-programming/hackerrank/python/list-comprehensions.py

 

#!/usr/bin/env python2
# https://www.hackerrank.com/challenges/list-comprehensions
from sys import stdin
X, Y, Z, N = [int(stdin.readline()) for i in range(4)]
print [[x, y, z] for x in range(X+1) for y in range(Y+1) for z in range(Z+1) if x + y + z != N]
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