diff --git a/day21/stepCounter.go b/day21/stepCounter.go
index 00d0565..539412d 100644
--- a/day21/stepCounter.go
+++ b/day21/stepCounter.go
@@ -9,18 +9,18 @@ import (
 
 func Run() int {
 	fmt.Print("hello day21")
-	filename := "day21/example"
+	filename := "day21/input"
 	field := ReadField(filename)
 	log.Print(field)
 
-	reachableBySix := field.ReachableBySteps(6, map[Coord]any{
+	reachableBySixtyFour := field.ReachableBySteps(64, map[Coord]any{
 		Coord{Row: field.RowStart, Col: field.ColStart}: struct{}{},
 	})
 
-	fmt.Println(field.PrintCoord(reachableBySix))
+	fmt.Println(field.PrintCoord(reachableBySixtyFour))
 
 
-	return len(reachableBySix)
+	return len(reachableBySixtyFour)
 }
 
 // let's do dijkstra?