diff --git a/07/solution.c b/07/solution.c
index 24bda90..3265729 100644
--- a/07/solution.c
+++ b/07/solution.c
@@ -1,41 +1,20 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <stdint.h>
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
-#include <ctype.h>
-
-uint32_t fnv1a_32(const char *buf, size_t len)
-{
-    uint32_t h = 0x811c9dc5U;
-    for (; len > 0; len--)
-        h = 0x01000193U * (h ^ *buf++);
-
-    return h;
-}
 
 typedef struct entry {
-    uint32_t id;
     size_t size;
     size_t n_entries;
     size_t n_alloc;
+    size_t visit;
     struct entry **entries;
     struct entry *parent;
 } entry;
 
-entry *findent(entry *e, const char *name, size_t nlen) {
-    uint32_t id = fnv1a_32(name, nlen);
-    for (size_t i = 0; i < e->n_entries; i++) {
-        if (e->entries[i]->id == id)
-            return e->entries[i];
-    }
-
-    return NULL;
-}
-
-entry *addent(entry *parent, const char *name, size_t nlen) {
+entry *addent(entry *parent) {
     if (parent->n_entries >= parent->n_alloc) {
         parent->n_alloc += 5;
         if (parent->n_entries)
@@ -46,7 +25,6 @@ entry *addent(entry *parent, const char *name, size_t nlen) {
     parent->n_entries++;
 
     entry *e = parent->entries[parent->n_entries - 1] = calloc(1, sizeof(entry));
-    e->id = fnv1a_32(name, nlen);
     e->parent = parent;
 
     return e;
@@ -71,8 +49,7 @@ int main(int argc, char **argv) {
     while (l != in + s.st_size) {
         char *nl = strchr(l, '\n');
         if (l[0] == 'd') {
-            l += 4;
-            addent(current, l, nl - l);
+            addent(current);
         } else if (l[0] == '$') {
             if (l[2] == 'c') {
                 if (l[5] == '/')
@@ -81,10 +58,8 @@ int main(int argc, char **argv) {
                     if (current->parent != root)
                         current->parent->size += current->size;
                     current = current->parent;
-                } else {
-                    l += 5;
-                    current = findent(current, l, nl - l);
-                }
+                } else
+                    current = current->entries[current->visit++];
             }
         } else {
             size_t sz = 0;