diff --git a/0327-Qualification/README.md b/0327-Qualification/README.md
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+Problems descriptions: https://codingcompetitions.withgoogle.com/codejam/round/000000000043580a
diff --git a/0410-1A/README.md b/0410-1A/README.md
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+Problems descriptions: https://codingcompetitions.withgoogle.com/codejam/round/000000000043585d
diff --git a/0425-1B/README.md b/0425-1B/README.md
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+Problems descriptions: https://codingcompetitions.withgoogle.com/codejam/round/0000000000435baf
diff --git a/README.md b/README.md
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-# GoogleCodeJam-2021
\ No newline at end of file
+# GoogleCodeJam-2021
+
+https://codingcompetitions.withgoogle.com/codejam/archive/2021