Initial commit

5 files changed, 56 insertions, 0 deletions

diff --git a/.gitignore b/.gitignore
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+++ b/.gitignore
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+venv/
+cache/
+session.txt
diff --git a/README.md b/README.md
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+++ b/README.md
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+## AoC 2018
+
+Put your session token in `session.txt` and just run the files.
+
diff --git a/commons.py b/commons.py
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+++ b/commons.py
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+from pathlib import Path
+
+import requests
+
+root: Path = Path(__file__).parent
+cache: Path = root / 'cache'
+cache.mkdir(parents=True, exist_ok=True)
+session: str = (root / 'session.txt').read_text().strip()
+cookies = dict(session=session)
+
+
+def identity(x):
+    return x
+
+
+def remove_empty(seq):
+    return filter(identity, seq)
+
+
+def get_input(day: int) -> str:
+    cache_file = cache / str(day)
+    if cache_file.exists():
+        return cache_file.read_text()
+    text = requests.get('http://adventofcode.com/2018/day/{}/input'.format(day),
+                        cookies=cookies).text
+    cache_file.write_text(text)
+    return text
+
diff --git a/day1/solve.py b/day1/solve.py
new file mode 100644
index 0000000..fda5b7d
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+++ b/day1/solve.py
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+from itertools import cycle
+
+from commons import get_input, remove_empty
+
+seq = list(map(int, remove_empty(get_input(1).split('\n'))))
+
+found = set()
+
+freq = 0
+dup = 0
+for el in cycle(seq):
+    freq += el
+    if freq in found:
+        dup = freq
+        break
+    found.add(freq)
+
+if __name__ == '__main__':
+    print("first:", sum(seq))
+    print("second:", dup)
diff --git a/requirements.txt b/requirements.txt
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+++ b/requirements.txt
@@ -0,0 +1 @@
+requests