diff --git a/day17/main.go b/day17/main.go
index 4eccdff..f63b8da 100644
--- a/day17/main.go
+++ b/day17/main.go
@@ -8,7 +8,7 @@ import (
 	aoc "go.sour.is/advent-of-code"
 )
 
-// var log = aoc.Log
+var log = aoc.Log
 
 func main() { aoc.MustResult(aoc.Runner(run)) }
 
@@ -26,10 +26,14 @@ func run(scan *bufio.Scanner) (*result, error) {
 		text := scan.Text()
 		m = append(m, []rune(text))
 	}
+	log("start day 17")
 
 	result := result{}
 	result.valuePT1 = search(m, 1, 3)
+	log("result from part 1 = ", result.valuePT1)
+
 	result.valuePT2 = search(m, 4, 10)
+	log("result from part 2 = ", result.valuePT2)
 
 	return &result, nil
 }
@@ -157,7 +161,7 @@ func search(m Map, minSteps, maxSteps int8) int {
 	g := graph{min: minSteps, max: maxSteps, m: m, target: target}
 	cost, path := aoc.FindPath[int16, position](&g, position{loc: start}, position{loc: target})
 
-	fmt.Println("total map reads = ", g.reads)
+	log("total map reads = ", g.reads)
 	printGraph(m, path)
 
 	return int(cost)
diff --git a/runner.go b/runner.go
index 5958633..d2600aa 100644
--- a/runner.go
+++ b/runner.go
@@ -6,6 +6,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 )
 
 func Runner[R any, F func(*bufio.Scanner) (R, error)](run F) (R, error) {
@@ -33,7 +34,10 @@ func MustResult[T any](result T, err error) {
 	Log("result", result)
 }
 
-func Log(v ...any) { fmt.Fprintln(os.Stderr, v...) }
+func Log(v ...any) {
+	fmt.Fprint(os.Stderr, time.Now(), ": ")
+	fmt.Fprintln(os.Stderr, v...)
+}
 func Logf(format string, v ...any) {
 	if !strings.HasSuffix(format, "\n") {
 		format += "\n"