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# Task 1: Unique Sum
# Submitted by: Mohammad S Anwar
#
# You are given an array of integers.
# Write a script to find out the sum of unique elements in the given array.
#
# Example 1
# Input: @int = (2, 1, 3, 2)
# Output: 4
#
# In the given array we have 2 unique elements (1, 3).
#
# Example 2
# Input: @int = (1, 1, 1, 1)
# Output: 0
#
# In the given array no unique element found.
#
# Example 3
# Input: @int = (2, 1, 3, 4)
# Output: 10
#
# In the given array every element is unique.
import re
import sys
if __name__ == "__main__":
input = sys.argv[1:]
if (len(input) < 1
or
len(list(filter(lambda x: re.search(r'[^\-\d]', x), input))) != 0):
sys.exit("Input error\n")
ints = list(map(int, input))
freq = dict((i, ints.count(i)) for i in set(ints))
print( sum( list(filter(lambda x: freq.get(x) == 1, freq.keys())) ) )
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