From 42a525352a71f31bd25a43335f80a3166fbe85af Mon Sep 17 00:00:00 2001
From: setop <setop@zoocoop.com>
Date: Mon, 2 Jan 2023 12:35:09 +0100
Subject: [PATCH] day 10, part 2, no need to buffer, spare 10 loc

---
 d10/part2.awk | 18 ++++--------------
 1 file changed, 4 insertions(+), 14 deletions(-)

diff --git a/d10/part2.awk b/d10/part2.awk
index a58678f..72d1ef8 100644
--- a/d10/part2.awk
+++ b/d10/part2.awk
@@ -1,20 +1,10 @@
-BEGIN { x=1 }
 function inc() {
-  i = (c%40)
-	A[c+1] = (i==x-1||i==x||i==x+1) ? "█" : "░"
-	c+=1
+	i = (c++%40)
+	printf "%s", (i==x||i==x+1||i==x+2) ? "█" : " "
+	printf "%s", (i==39) ? "\n" : ""
 }
 { inc() }
 $1 == "addx" {
 	inc()
-	x+=$2
-}
-END {
-	for (i=0;i<=5;i++) {
-		r = ""
-		for (j=1;j<=40;j++) {
-			r = r A[i*40+j]
-		}
-		print r
-	}
+	x += $2
 }
\ No newline at end of file