diff --git a/2020/01/input.txt b/2020/01/input.txt
new file mode 100644
index 0000000..fbbfa17
--- /dev/null
+++ b/2020/01/input.txt
@@ -0,0 +1,200 @@
+1337
+1906
+2007
+1939
+818
+1556
+2005
+1722
+1484
+1381
+1682
+1253
+1967
+1718
+2002
+1398
+1439
+1689
+1746
+1979
+1985
+1387
+1509
+1566
+1276
+1625
+1853
+882
+1750
+1390
+1731
+1555
+1860
+1675
+1457
+1554
+1506
+1639
+1543
+1849
+1062
+1869
+1769
+1858
+1916
+1504
+1747
+1925
+1275
+1273
+1383
+1816
+1814
+1481
+1649
+1993
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+1949
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+1374
+1613
+1424
+783
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+1576
+1933
+1270
+1844
+1856
+1634
+1261
+1293
+1741
+668
+1573
+1599
+1877
+1474
+1918
+476
+1515
+1029
+202
+1589
+1867
+1503
+1582
+1605
+1557
+587
+1462
+1955
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+1834
+1739
+1343
+1594
+1622
+1972
+1527
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+1719
+1866
+134
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+1340
+1621
+1921
+1256
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+1314
+1748
+1963
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+1627
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+1977
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+1716
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+1932
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+1871
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+1507
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+1519
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+1805
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+1420
+1809
+1587
+1421
+1540
+1942
+470
+1940
+1831
+1247
+1632
+1975
+1774
+1919
+1829
+1944
+1553
+1361
+1483
+1995
+1868
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diff --git a/2020/01/main.hs b/2020/01/main.hs
deleted file mode 100755
index 2de84e5..0000000
--- a/2020/01/main.hs
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/usr/bin/env runghc
-
-main :: IO ()
-main = putStrLn "Hello, Advent of Code 2020!"
diff --git a/2020/01/part1.hs b/2020/01/part1.hs
new file mode 100755
index 0000000..1bc7777
--- /dev/null
+++ b/2020/01/part1.hs
@@ -0,0 +1,24 @@
+#!/usr/bin/env runghc
+
+import Data.List
+import Data.Maybe
+
+main :: IO ()
+main =
+  do
+    input <- getInput
+
+    let answer = uncurry (*) $ fromJust $ find isSolutionPair $ pairs input
+
+    putStrLn $ show answer
+
+getInput :: IO [Int]
+getInput = fmap (map read . lines) getContents
+
+pairs :: [a] -> [(a, a)]
+pairs [] = []
+pairs [_] = []
+pairs (x:xs) = [(x, y) | y <- xs] ++ pairs xs
+
+isSolutionPair :: (Int, Int) -> Bool
+isSolutionPair (a, b) = a + b == 2020