Started with 2020 because I need stars for Beeminder

2020/d1.py

@@ -0,0 +1,31 @@
+from lib import get_data, str_to_ints
+
+
+def part_1(data):
+    xs = sorted(str_to_ints(data))
+
+    for i in range(len(xs)):
+        for j in range(i + 1, len(xs)):
+            a, b = xs[i], xs[j]
+            if a + b == 2020:
+                print(a * b)
+            if a + b > 2020:
+                break
+
+    for i in range(len(xs)):
+        for j in range(i + 1, len(xs)):
+            for k in range(j + 1, len(xs)):
+                a, b, c = xs[i], xs[j], xs[k]
+                if a + b + c == 2020:
+                    print(a * b * c)
+                if a + b + c > 2020:
+                    break
+
+
+def main():
+    data = get_data(__file__)
+    part_1(data)
+
+
+if __name__ == "__main__":
+    main()