diff --git a/slides/au04/sa b/slides/au04/sa
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diff --git a/slides/au04/sa.c b/slides/au04/sa.c
deleted file mode 100644
index 38543f5..0000000
--- a/slides/au04/sa.c
+++ /dev/null
@@ -1,38 +0,0 @@
-/* sistema academico */
-#include <stdio.h>
-
-int main(void)
-{
-  int N1, N2, N3, N4, N5;
-  /* leitura das notas */
-  scanf("%i %i %i %i %i", &N1, &N2, &N3, &N4, &N5);
-
-  /* verificar se o aluno passou direto */
-  if (N1 + N2 + N3 + N4 + N5 >= 70*5 && /* a media maior ou igual a 70 */
-      N1 >= 50 && /* e cada nota maior ou igual a 50 */
-      N2 >= 50 && 
-      N3 >= 50 && 
-      N4 >= 50 && 
-      N5 >= 50)
-    {
-      printf("S\n");
-    }
-  /* verificar se o aluno foi para a reposicao */
-  else if (N1 + N2 + N3 + N4 + N5 >= 30*5)
-    {
-      int NR;
-      scanf("%i", &NR);
-      /* verificar se o aluno passou na reposicao */
-      if (N1 + N2 + N3 + N4 + N5 + 5 * NR >= 50*10) /* media final maior ou igual a 50 */
-	printf("S\n");
-      else
-	printf("R\n");
-    }
-  /* o aluno nem foi para a reposicao */
-  else
-    {
-      printf("R\n");
-    }
-
-  return 0;
-}