diff --git a/day10/input.txt b/day10/input.txt
new file mode 100644
index 0000000..17607bd
--- /dev/null
+++ b/day10/input.txt
@@ -0,0 +1,138 @@
+noop
+noop
+addx 5
+addx 29
+addx -28
+addx 5
+addx -1
+noop
+noop
+addx 5
+addx 12
+addx -6
+noop
+addx 4
+addx -1
+addx 1
+addx 5
+addx -31
+addx 32
+addx 4
+addx 1
+noop
+addx -38
+addx 5
+addx 2
+addx 3
+addx -2
+addx 2
+noop
+addx 3
+addx 2
+addx 5
+addx 2
+addx 3
+noop
+addx 2
+addx 3
+noop
+addx 2
+addx -32
+addx 33
+addx -20
+addx 27
+addx -39
+addx 1
+noop
+addx 5
+addx 3
+noop
+addx 2
+addx 5
+noop
+noop
+addx -2
+addx 5
+addx 2
+addx -16
+addx 21
+addx -1
+addx 1
+noop
+addx 3
+addx 5
+addx -22
+addx 26
+addx -39
+noop
+addx 5
+addx -2
+addx 2
+addx 5
+addx 2
+addx 23
+noop
+addx -18
+addx 1
+noop
+noop
+addx 2
+noop
+noop
+addx 7
+addx 3
+noop
+addx 2
+addx -27
+addx 28
+addx 5
+addx -11
+addx -27
+noop
+noop
+addx 3
+addx 2
+addx 5
+addx 2
+addx 27
+addx -26
+addx 2
+addx 5
+addx 2
+addx 4
+addx -3
+addx 2
+addx 5
+addx 2
+addx 3
+addx -2
+addx 2
+noop
+addx -33
+noop
+noop
+noop
+noop
+addx 31
+addx -26
+addx 6
+noop
+noop
+addx -1
+noop
+addx 3
+addx 5
+addx 3
+noop
+addx -1
+addx 5
+addx 1
+addx -12
+addx 17
+addx -1
+addx 5
+noop
+noop
+addx 1
+noop
+noop
\ No newline at end of file
diff --git a/day10/main.py b/day10/main.py
new file mode 100644
index 0000000..62ac673
--- /dev/null
+++ b/day10/main.py
@@ -0,0 +1,37 @@
+
+input_file = open("input.txt", "r")
+lines = input_file.readlines()
+
+instructions = []
+
+for line in lines:
+    line = line.strip()
+    instruction = line.split(" ")[0]
+    param = None if "noop" == instruction else int(line.split(" ")[-1])
+    cycles = 1 if "noop" == instruction else 2
+
+    instructions.append((instruction, param, cycles))
+
+# Part 1
+
+register_x = 1
+current_cycle = 1
+signal_strengths = []
+cycle_milestones = [20, 60, 100, 140, 180, 220]
+
+for instruction in instructions:
+    for i in range(instruction[2]):
+        if instruction[0] == "noop":
+            current_cycle += 1
+
+        elif instruction[0] == "addx":
+            current_cycle += 1
+            if i == instruction[2] - 1:
+                register_x += instruction[1]
+
+        if current_cycle in cycle_milestones:
+            signal_strengths.append(register_x * current_cycle)
+
+        # print("Cycle " + str(current_cycle) + ": " + str(register_x))
+
+print("Part 1: " + str(sum(signal_strengths)))
diff --git a/day9/main.py b/day9/main.py
index 9d3179f..52b3ec8 100644
--- a/day9/main.py
+++ b/day9/main.py
@@ -1,5 +1,5 @@
 import time
-from os import system, name
+from os import system
 
 moves = []