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authorIan C <ianc@noddybox.co.uk>2021-12-25 20:24:31 +0000
committerIan C <ianc@noddybox.co.uk>2021-12-25 20:24:31 +0000
commit6e09bb9bc428102d944e670aacb8eaa9b3ff53c4 (patch)
treef3883f8015d4453fa9bf0ca5ce17a5a92fb41c35
parentc9a2ef598f26de5c9bd7275ad5a60dae604d1452 (diff)
Added data for day 13. Skeleton for day 12 but not sure how to approach it.HEADmaster
-rw-r--r--12.c84
-rw-r--r--data.13804
-rw-r--r--data.13a21
3 files changed, 909 insertions, 0 deletions
diff --git a/12.c b/12.c
new file mode 100644
index 0000000..238b418
--- /dev/null
+++ b/12.c
@@ -0,0 +1,84 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#define MAX_CONNECTIONS 50
+#define MAX_NODES 50
+
+typedef struct node
+{
+ char name[32];
+ int links;
+ struct node *link[MAX_CONNECTIONS];
+} Node;
+
+static Node node[MAX_NODES] = {0};
+static int nodes = 0;
+static Node *start = NULL;
+static Node *end = NULL;
+
+static char *ReadLine(char *p, size_t size, FILE *fp)
+{
+ if ((p=fgets(p, size, fp)))
+ {
+ size_t l = strlen(p);
+
+ while(l && p[l-1] == '\n')
+ {
+ p[--l] = 0;
+ }
+ }
+
+ return p;
+}
+
+static Node *GetOrAddNode(const char *name)
+{
+ int f;
+
+ for(f = 0; f < nodes; f++)
+ {
+ if (strcmp(name, node[f].name) == 0)
+ {
+ return node + f;
+ }
+ }
+
+ if (f == MAX_NODES)
+ {
+ fprintf(stderr, "Too many nodes\n");
+ exit(1);
+ }
+
+ strcpy(node[f].name, name);
+
+ return node + f;
+}
+
+static void Link(Node *node1, Node *node2)
+{
+ node1->link[node1->links++] = node2;
+ node2->link[node2->links++] = node1;
+}
+
+int main(void)
+{
+ char buff[4096];
+
+ start = GetOrAddNode("start");
+ end = GetOrAddNode("end");
+
+ while(ReadLine(buff, sizeof buff, stdin))
+ {
+ Node *node1, *node2;
+ char *p;
+
+ p = strtok(buff, "-");
+ node1 = GetOrAddNode(p);
+ p = strtok(NULL, "-");
+ node2 = GetOrAddNode(p);
+ Link(node1, node2);
+ }
+
+ return 0;
+}
diff --git a/data.13 b/data.13
new file mode 100644
index 0000000..227c901
--- /dev/null
+++ b/data.13
@@ -0,0 +1,804 @@
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+
+fold along x=655
+fold along y=447
+fold along x=327
+fold along y=223
+fold along x=163
+fold along y=111
+fold along x=81
+fold along y=55
+fold along x=40
+fold along y=27
+fold along y=13
+fold along y=6
diff --git a/data.13a b/data.13a
new file mode 100644
index 0000000..282114c
--- /dev/null
+++ b/data.13a
@@ -0,0 +1,21 @@
+6,10
+0,14
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+0,3
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+6,0
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+4,1
+0,13
+10,12
+3,4
+3,0
+8,4
+1,10
+2,14
+8,10
+9,0
+
+fold along y=7
+fold along x=5