diff --git a/2020/day11/ex1-slow.bash b/2020/day11/ex1-slow.bash
index 3a40432..3f89fe3 100755
--- a/2020/day11/ex1-slow.bash
+++ b/2020/day11/ex1-slow.bash
@@ -12,9 +12,9 @@ declare floor
 
 function adj() {
 	local -i r="$1" n="$2" c="$3" count=0
-	local -a prow=(${rows[r-1]})
-	local -a row=(${rows[r]})
-	local -a nrow=(${rows[r+1]})
+	local -a prow=("${rows[r-1]}")
+	local -a row=("${rows[r]}")
+	local -a nrow=("${rows[r+1]}")
 	#echo
 	#echo p="${prow[*]}"
 	#echo r="${row[*]}"
@@ -51,7 +51,7 @@ function run() {
 		changed=0
 		seated=0
 		for ((r=1; r<=NROWS; ++r)); do
-			row=(${rows[r]})
+			row=("${rows[r]}")
 			newrow=(0)
 			for ((c=1; c<=RLENGTH; ++c)); do
 				newrow+=("${row[c]}")
@@ -61,13 +61,13 @@ function run() {
 				case ${row[c]} in
 					0) continue
 					   ;;
-					1) if (( $(adj $r $c 2) == 0 )); then
+					1) if (( $(adj "$r" "$c" 2) == 0 )); then
 						   ((++changed))
 						   newrow[c]=2
 					   fi
 					   #printf "[%d][%d]: %s %s %d\n" $r $c "${row[c]}" "${newrow[c]}" $(adj $r $c 2)
 					   ;;
-					2) if (( $(adj $r $c 2) >= 4 )); then
+					2) if (( $(adj "$r" "$c" 2) >= 4 )); then
 						   ((++changed))
 						   newrow[c]=1
 					   fi
diff --git a/2020/libsrc/debug.c b/2020/libsrc/debug.c
index 9c5f981..cc18075 100644
--- a/2020/libsrc/debug.c
+++ b/2020/libsrc/debug.c
@@ -1,6 +1,6 @@
 /* debug.c - debug/log management
  *
- * Copyright (C) 2021 Bruno Raoult ("br")
+ * Copyright (C) 2021-2022 Bruno Raoult ("br")
  * Licensed under the GNU General Public License v3.0 or later.
  * Some rights reserved. See COPYING.
  *
@@ -22,8 +22,9 @@
 #include "bits.h"
 #include "debug.h"
 
-#define NANOSEC  1000000000                       /* nano sec in sec */
-#define MILLISEC 1000000                          /* milli sec in sec */
+#define NS_SEC   1000000000                       /* nano sec in sec */
+#define MS_SEC   1000000                          /* microsec in sec */
+#define NS_MS    1000                             /* nano in micro */
 
 static long long timer_start;                     /* in nanosecond */
 static u32 debug_level=0;
@@ -41,7 +42,7 @@ void debug_init(u32 level)
 
     debug_level_set(level);
     if (!clock_gettime(CLOCK_MONOTONIC, &timer)) {
-        timer_start = timer.tv_sec * NANOSEC + timer.tv_nsec;
+        timer_start = timer.tv_sec * NS_SEC + timer.tv_nsec;
     }
     else {
         timer_start = 0;
@@ -54,10 +55,9 @@ inline static long long timer_elapsed()
     struct timespec timer;
 
     clock_gettime(CLOCK_MONOTONIC, &timer);
-    return (timer.tv_sec * NANOSEC + timer.tv_nsec) - timer_start;
+    return (timer.tv_sec * NS_SEC + timer.tv_nsec) - timer_start;
 }
 
-
 /* void debug - log function
  * @timestamp : boolean
  * @indent    : indent level (2 spaces each)
@@ -77,8 +77,8 @@ void debug(u32 level, bool timestamp, u32 indent, const char *src,
 
     if (timestamp) {
         long long diff = timer_elapsed();
-        printf("%lld.%03lld ", diff/NANOSEC, (diff/1000000)%1000);
-        printf("%010lld ", diff);
+        printf("%lld.%03lld ", diff / NS_SEC, (diff % NS_SEC) / NS_MS);
+        printf("%010lldμs ", diff / NS_MS);
     }
 
     if (src) {
diff --git a/2022/RESULTS.txt b/2022/RESULTS.txt
index a3e1bc7..903e97d 100644
--- a/2022/RESULTS.txt
+++ b/2022/RESULTS.txt
@@ -5,17 +5,17 @@
 +++++++++++++++++ part 1
 aoc.bash: res=66719
 	time: 0:00.03 real, 0.02 user, 0.00 sys
-	context-switch:	0+1, page-faults: 0+274
+	context-switch:	0+1, page-faults: 0+257
 
-aoc-c : res=66719
+aoc-c: res=66719
 	time: 0:00.00 real, 0.00 user, 0.00 sys
-	context-switch:	0+1, page-faults: 0+89
+	context-switch:	0+1, page-faults: 0+88
 
 +++++++++++++++++ part 2
 aoc.bash: res=198551
 	time: 0:00.03 real, 0.03 user, 0.00 sys
-	context-switch:	2+1, page-faults: 0+283
+	context-switch:	2+1, page-faults: 0+259
 
-aoc-c : res=198551
+aoc-c: res=198551
 	time: 0:00.00 real, 0.00 user, 0.00 sys
-	context-switch:	5+1, page-faults: 0+87
+	context-switch:	0+1, page-faults: 0+87