diff --git a/day3/puzzle1.c b/day3/puzzle1.c
index b36f172..8d736c8 100644
--- a/day3/puzzle1.c
+++ b/day3/puzzle1.c
@@ -156,6 +156,22 @@ int search_right(int x, int y, char chars[140][141])
 
 void get_string(int x, int y, char chars[140][141], struct HashTable *table)
 {
+    if (x < 0)
+    {
+        return;
+    }
+    if (x > 140)
+    {
+        return;
+    }
+    if (y < 0)
+    {
+        return;
+    }
+    if (y > 141)
+    {
+        return;
+    }
     // printf("%c", chars[x][y]);
     // char *cur_char = (char *)chars[x][y];
     // long int num = char_to_int(cur_char);