From b7dd9e5f1c27f04a40e0dcc476748df811c6eb24 Mon Sep 17 00:00:00 2001
From: a <a@trwnh.com>
Date: Sun, 5 Dec 2021 21:19:11 -0600
Subject: [PATCH] 2021 start

---
 2021/01/01.py      |   20 +
 2021/01/input.txt  | 2000 ++++++++++++++++++++++++++++++++++++++++++++
 2021/01/sample.txt |   10 +
 2021/02/02.py      |   35 +
 2021/02/input.txt  | 1000 ++++++++++++++++++++++
 2021/02/sample.txt |    6 +
 2021/03/03.py      |   28 +
 2021/03/input.txt  | 1000 ++++++++++++++++++++++
 2021/03/sample.txt |   12 +
 9 files changed, 4111 insertions(+)
 create mode 100644 2021/01/01.py
 create mode 100644 2021/01/input.txt
 create mode 100644 2021/01/sample.txt
 create mode 100644 2021/02/02.py
 create mode 100644 2021/02/input.txt
 create mode 100644 2021/02/sample.txt
 create mode 100644 2021/03/03.py
 create mode 100644 2021/03/input.txt
 create mode 100644 2021/03/sample.txt

diff --git a/2021/01/01.py b/2021/01/01.py
new file mode 100644
index 0000000..72f340a
--- /dev/null
+++ b/2021/01/01.py
@@ -0,0 +1,20 @@
+sweep = []
+
+with open("input.txt") as f:
+	lines = f.readlines()
+	for line in lines:
+		sweep.append(int(line))
+
+comparison = zip(sweep[1:],sweep)
+differences = [(d2 - d1) for d2, d1 in comparison]
+increases = [(d > 0) for d in differences]
+part1 = sum(increases)
+print(part1)
+
+window = zip(sweep,sweep[1:],sweep[2:])
+sums = [(d1 + d2 + d3) for d1, d2, d3 in window]
+comparison = zip(sums[1:],sums)
+differences = [(d2 - d1) for d2, d1 in comparison]
+increases = [(d > 0) for d in differences]
+part2 = sum(increases)
+print(part2)
\ No newline at end of file
diff --git a/2021/01/input.txt b/2021/01/input.txt
new file mode 100644
index 0000000..7f22306
--- /dev/null
+++ b/2021/01/input.txt
@@ -0,0 +1,2000 @@
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\ No newline at end of file
diff --git a/2021/01/sample.txt b/2021/01/sample.txt
new file mode 100644
index 0000000..59dad67
--- /dev/null
+++ b/2021/01/sample.txt
@@ -0,0 +1,10 @@
+199
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\ No newline at end of file
diff --git a/2021/02/02.py b/2021/02/02.py
new file mode 100644
index 0000000..7f4aa53
--- /dev/null
+++ b/2021/02/02.py
@@ -0,0 +1,35 @@
+commands = []
+
+with open("input.txt") as f:
+	lines = f.readlines()
+	for line in lines:
+		commands.append(line)
+
+horizontal = depth = 0
+for command in commands:
+	instruction, amount = command.split(' ')
+	amount = int(amount)
+	if instruction == 'forward':
+		horizontal += amount
+	elif instruction == 'down':
+		depth += amount
+	elif instruction == 'up':
+		depth -= amount
+
+part1 = horizontal * depth
+print(part1)
+
+horizontal = depth = aim = 0
+for command in commands:
+	instruction, amount = command.split(' ')
+	amount = int(amount)
+	if instruction == 'down':
+		aim += amount
+	elif instruction == 'up':
+		aim -= amount
+	elif instruction == 'forward':
+		horizontal += amount
+		depth += amount*aim
+
+part2 = horizontal * depth
+print(part2)
\ No newline at end of file
diff --git a/2021/02/input.txt b/2021/02/input.txt
new file mode 100644
index 0000000..f5a3f62
--- /dev/null
+++ b/2021/02/input.txt
@@ -0,0 +1,1000 @@
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\ No newline at end of file
diff --git a/2021/02/sample.txt b/2021/02/sample.txt
new file mode 100644
index 0000000..0ed302d
--- /dev/null
+++ b/2021/02/sample.txt
@@ -0,0 +1,6 @@
+forward 5
+down 5
+forward 8
+up 3
+down 8
+forward 2
\ No newline at end of file
diff --git a/2021/03/03.py b/2021/03/03.py
new file mode 100644
index 0000000..a6c0a24
--- /dev/null
+++ b/2021/03/03.py
@@ -0,0 +1,28 @@
+report = []
+
+with open("input.txt") as f:
+	lines = f.read().split('\n')
+	for line in lines:
+		report.append(line)
+
+gamma = ''
+power = 2 ** len(report[0]) - 1
+
+for i in range(len(report[0])):
+    ones_count = 0
+    for number in report:
+        if number[i] == '1':
+            ones_count += 1
+
+    half = len(report) / 2
+    if ones_count > half:
+        gamma += '1'
+    else:
+        gamma += '0'
+
+gamma = int(gamma, 2)
+epsilon = power - gamma
+part1 = gamma * epsilon
+print(part1)
+
+o2 = co2 = 0
\ No newline at end of file
diff --git a/2021/03/input.txt b/2021/03/input.txt
new file mode 100644
index 0000000..5086164
--- /dev/null
+++ b/2021/03/input.txt
@@ -0,0 +1,1000 @@
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\ No newline at end of file
diff --git a/2021/03/sample.txt b/2021/03/sample.txt
new file mode 100644
index 0000000..665fd57
--- /dev/null
+++ b/2021/03/sample.txt
@@ -0,0 +1,12 @@
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\ No newline at end of file