challenge-323/eric-cheung/python/ch-1.py


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## arrOperations = ["--x", "x++", "x++"]  ## Example 1
## arrOperations = ["x++", "++x", "x++"]  ## Example 2
arrOperations = ["x++", "++x", "--x", "x--"]  ## Example 3

arrOutput = [1 if "++" in strOperator else -1 for strOperator in arrOperations]

print (sum(arrOutput))