diff --git a/day3/input.txt b/day3/input.txt
new file mode 100644
index 0000000..dc00489
--- /dev/null
+++ b/day3/input.txt
@@ -0,0 +1,300 @@
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\ No newline at end of file
diff --git a/day3/main.py b/day3/main.py
index eae1062..d322b15 100644
--- a/day3/main.py
+++ b/day3/main.py
@@ -1,15 +1,51 @@
-input = open("./test.txt", "r")
+input = open("./input.txt", "r")
+
+def determinePriority(item):
+    if (item.isupper()):
+        return priorityValue[item.lower()] + 26
+    return priorityValue[item]
 
 total = 0
 
+priorityValue = {
+    "a": 1,
+    "b": 2,
+    "c": 3,
+    "d": 4,
+    "e": 5,
+    "f": 6,
+    "g": 7,
+    "h": 8,
+    "i": 9,
+    "j": 10,
+    "k": 11,
+    "l": 12,
+    "m": 13,
+    "n": 14,
+    "o": 15,
+    "p": 16,
+    "q": 17,
+    "r": 18,
+    "s": 19,
+    "t": 20,
+    "u": 21,
+    "v": 22,
+    "w": 23,
+    "x": 24,
+    "y": 25,
+    "z": 26
+}
+
 for line in input:
-    total += total
     lineLength = len(line) - 1
     lineLength = int(lineLength / 2)
-    print(lineLength)
     pack1 = line[:lineLength]
     pack2 = line[lineLength:]
-    print(pack1)
-    print(pack2)
+    dupItem = ""
+    for item in pack1:
+        if (pack2.__contains__(item)):
+            dupItem = item
+            print(dupItem)
+    total += determinePriority(dupItem)
 
 print(total)
\ No newline at end of file