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+# Task 1: Special Quadruplets
+# Submitted by: Mohammad S Anwar
+# 
+# You are given an array of integers.
+# Write a script to find out the total special quadruplets for the given array.
+# 
+# Special Quadruplets are such that satisfies the following 2 rules.
+# 1) nums[a] + nums[b] + nums[c] == nums[d]
+# 2) a < b < c < d
+# 
+# 
+# Example 1
+# Input: @nums = (1,2,3,6)
+# Output: 1
+# 
+# Since the only special quadruplets found is $nums[0] + $nums[1] + $nums[2] == $nums[3].
+# 
+# Example 2
+# Input: @nums = (1,1,1,3,5)
+# Output: 4
+# 
+# $nums[0] + $nums[1] + $nums[2] == $nums[3]
+# $nums[0] + $nums[1] + $nums[3] == $nums[4]
+# $nums[0] + $nums[2] + $nums[3] == $nums[4]
+# $nums[1] + $nums[2] + $nums[3] == $nums[4]
+# 
+# Example 3
+# Input: @nums = (3,3,6,4,5)
+# Output: 0
+
+import re
+import sys
+
+if __name__ == "__main__":
+    input = sys.argv[1:]
+    if (len(input) < 4 or
+        len(list(filter(lambda x: re.search(r'\D', x), input))) > 0 ):
+        sys.exit("Input error\n")
+
+    input = list(map(int, input))
+    output = 0
+
+    quadruplets = []
+    for i in range(0, len(input)-3):
+        for j in range(i+1, len(input)-2):
+            for k in range(j+1, len(input)-1):
+                for z in range(k+1, len(input)):
+                    if input[i] + input[j] + input[k] == input[z]:
+                        quadruplets.append([i,j,k,z])
+
+    print(len(quadruplets));