X-Git-Url: https://git.sommitrealweird.co.uk/advent-of-code-2019.git/blobdiff_plain/8559cc01c88addff1e3970519775d08c121ce5bf..e89a78b0539f89e5276ce18ba0c88ee87863a778:/day10/common.sh

diff --git a/day10/common.sh b/day10/common.sh
index 86979ed..db5c6b9 100644
--- a/day10/common.sh
+++ b/day10/common.sh
@@ -4,8 +4,8 @@ get_vector() {
     local x2=$3
     local y2=$4
 
-    x_diff=$(($x1 - $x2))
-    y_diff=$(($y1 - $y2))
+    x_diff=$(($x2 - $x1))
+    y_diff=$(($y2 - $y1))
 
     echo "$x_diff,$y_diff"
 }