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#!/usr/bin/env python
# Challenge 091
#
# TASK #2: Jump Game
#
# You are given an array of positive numbers @N, where value at each index
# determines how far you are allowed to jump further. Write a script to decide
# if you can jump to the last index. Print 1 if you are able to reach the last
# index otherwise 0.
import sys
n = [int(x) for x in sys.argv[1:]]
pos = 0
while pos < len(n)-1 and n[pos] != 0:
pos += n[pos]
if pos==len(n)-1:
print(1)
else:
print(0)
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