diff --git a/.gitignore b/.gitignore
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--- a/.gitignore
+++ b/.gitignore
@@ -282,3 +282,4 @@ main
 segundo-ano/haskell/matrix/main
 *.Rhistory
 *_exiftool_tmp
+*_original
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diff --git a/segundo-ano/circuits/marcelo.txt b/segundo-ano/circuits/marcelo.txt
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--- /dev/null
+++ b/segundo-ano/circuits/marcelo.txt
@@ -0,0 +1,2 @@
+numero de endereços = total de bancos * numero de entradas de cada
+
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