diff --git a/submission/UnnatiKesarwani/FibonacciNumber/fibonacci number.png b/submission/UnnatiKesarwani/FibonacciNumber/fibonacci number.png
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diff --git a/submission/UnnatiKesarwani/FibonacciNumber/solution.py b/submission/UnnatiKesarwani/FibonacciNumber/solution.py
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index 0000000..c453054
--- /dev/null
+++ b/submission/UnnatiKesarwani/FibonacciNumber/solution.py
@@ -0,0 +1,12 @@
+class Solution:
+    def fib(self, n):
+        if n == 0:
+            return 0
+        elif n == 1:
+            return 1
+
+        a, b = 0, 1
+        for _ in range(2, n + 1):
+            a, b = b, a + b
+        return b
+
diff --git a/submission/UnnatiKesarwani/TwoSum/solution.py b/submission/UnnatiKesarwani/TwoSum/solution.py
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--- /dev/null
+++ b/submission/UnnatiKesarwani/TwoSum/solution.py
@@ -0,0 +1,8 @@
+class Solution:
+    def twoSum(self, numbers, target_sum):
+        seen_numbers = {}
+        for index, current_number in enumerate(numbers):
+            needed_number = target_sum - current_number
+            if needed_number in seen_numbers:
+                return [seen_numbers[needed_number], index]
+            seen_numbers[current_number] = index
diff --git a/submission/UnnatiKesarwani/TwoSum/twoSum.png b/submission/UnnatiKesarwani/TwoSum/twoSum.png
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