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diff --git a/challenge-140/paulo-custodio/python/ch-1.py b/challenge-140/paulo-custodio/python/ch-1.py
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+#!/usr/bin/python3
+
+# TASK #1 > Add Binary
+# Submitted by: Mohammad S Anwar
+# You are given two decimal-coded binary numbers, $a and $b.
+#
+# Write a script to simulate the addition of the given binary numbers.
+#
+# The script should simulate something like $a + $b. (operator overloading)
+#
+# Example 1
+# Input: $a = 11; $b = 1;
+# Output: 100
+# Example 2
+# Input: $a = 101; $b = 1;
+# Output: 110
+# Example 3
+# Input: $a = 100; $b = 11;
+# Output: 111
+
+import sys
+
+class Binary():
+    def __init__(self, n):
+        self.n = n
+
+    def __str__(self):
+        return str(self.n)
+
+    def __add__(self, other):
+        a = int(str(self.n), 2)
+        b = int(str(other.n), 2)
+        return Binary(int("{:b}".format(a+b)))
+
+a = Binary(int(sys.argv[1]))
+b = Binary(int(sys.argv[2]))
+c = a+b
+print(c)