diff --git a/2020/day01.py b/2020/day01.py
new file mode 100755
index 0000000..0c9fbd3
--- /dev/null
+++ b/2020/day01.py
@@ -0,0 +1,36 @@
+#!/usr/bin/python3
+"""
+Jour 01 du défi Advent Of Code pour l'année 2021
+"""
+
+def read_sample():
+    """récupère les entrées depuis le fichier texte correspondant"""
+    with open('inputs/day01.txt', 'r') as f:
+        sample = f.read().split('\n')
+    sample = [int(i) for i in sample if i != '']
+    return sample
+
+def part1(sample):
+    """Partie 1 du défi"""
+    for i in sample:
+        for j in sample:
+            if i+j == 2020:
+                return i*j
+
+    return 0
+
+def part2(sample):
+    """Partie 2 du défi"""
+    for i in sample:
+        for j in sample:
+            for k in sample:
+                if i+j+k == 2020:
+                    return i*j*k
+    return 0
+
+
+def main():
+    """Fonction principale"""
+    sample = read_sample()
+    print(f"part1: {part1(sample)}")
+    print(f"part2: {part2(sample)}")
diff --git a/2020/inputs/day01.txt b/2020/inputs/day01.txt
new file mode 100644
index 0000000..f441bbe
--- /dev/null
+++ b/2020/inputs/day01.txt
@@ -0,0 +1,200 @@
+2004
+1823
+1628
+1867
+1073
+1951
+1909
+1761
+1093
+1992
+1986
+1106
+1537
+1905
+1233
+1961
+1760
+1562
+1781
+1329
+1272
+1660
+1367
+1248
+1697
+1515
+1470
+1980
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+1784
+1966
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+1930
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+1888
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+1064
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+1234
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+1135
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+1176
+1993
+1769
+1633
+1450
+1819
+1973
+1694
+969
+1987
+1095
+1717
+1933
+1593
+1045
+1355
+1459
+1619