Small cleanup

2 files changed, 6 insertions, 11 deletions

diff --git a/2023/20/20a.c b/2023/20/20a.c
index 99b6874..1fda99e 100644
--- a/2023/20/20a.c
+++ b/2023/20/20a.c
@@ -1,7 +1,6 @@
 #include <inttypes.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 
 #define N 100
@@ -95,7 +94,6 @@ int main() {
         for (int i = 0; i < 1000; i++)
                 pushbutton();
 
-        printf("%" PRId64 " (%" PRId64 " low, %" PRId64 " hi)\n",
-            hitot * lowtot, lowtot, hitot);
+        printf("%" PRId64 "\n", hitot * lowtot);
         return 0;
 }
diff --git a/2023/20/20b.c b/2023/20/20b.c
index dc0d6b3..a6f549d 100644
--- a/2023/20/20b.c
+++ b/2023/20/20b.c
@@ -1,7 +1,7 @@
 /*
-This one is a bit weird. This program works only for my specific input
-(included in this folder). Similarly to number 8, this program outputs
-4 numbers and you have to take the lcm of them.
+This one is a bit weird. This program works only for my specific input.
+Similarly to day 8, this program outputs 4 numbers and you have to
+take the lcm of them.
 
 I solved it this way:
 1. First, using a modified version of the code for part one (graph.c),
@@ -19,7 +19,6 @@ I solved it this way:
 #include <inttypes.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 
 #define N 100
@@ -97,11 +96,9 @@ bool isclean(void) {
 }
 
 int64_t period(int node) {
-        int64_t npush = 0;
-        do {
+        int64_t npush;
+        for (npush = 0; npush == 0 || !isclean(); npush++)
                 sig(node, false);
-                npush++;
-        } while (!isclean());
         return npush;
 }