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-rw-r--r--challenge/c04.go3
1 files changed, 3 insertions, 0 deletions
diff --git a/challenge/c04.go b/challenge/c04.go
index 97bab0e..e075133 100644
--- a/challenge/c04.go
+++ b/challenge/c04.go
@@ -1,3 +1,6 @@
+// Copyright © 2020 rsiddharth <s@ricketyspace.net>
+// SPDX-License-Identifier: ISC
+
package challenge
import (