diff --git a/.gitignore b/.gitignore
index d805396..a7afc28 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,7 @@ A1/coord_query_naive
 A1/id_query_naive
 A1/id_query_indexed
 A1/id_query_binsort
+A1/random_ids
 
 */.vscode/
 .vscode/
\ No newline at end of file
diff --git a/A1/coord_query_kdtree.c b/A1/coord_query_kdtree.c
index 67d93ab..d00436e 100644
--- a/A1/coord_query_kdtree.c
+++ b/A1/coord_query_kdtree.c
@@ -16,13 +16,13 @@ double closest_point_distance;
 
 int lon_comp_func(const void* a, const void* b) {
     return (
-        ((struct record*)a)->lon - ((struct record*)b)->lon
+        ((struct record*)a)->lon > ((struct record*)b)->lon
     );
 }
 
 int lat_comp_func(const void* a, const void* b) {
     return (
-        ((struct record*)a)->lat - ((struct record*)b)->lat
+        ((struct record*)a)->lat > ((struct record*)b)->lat
     );
 }
 
diff --git a/A1/id_query_binsort.c b/A1/id_query_binsort.c
index 25cae9a..58890a3 100644
--- a/A1/id_query_binsort.c
+++ b/A1/id_query_binsort.c
@@ -22,7 +22,7 @@ struct indexed_data {
 
 int comp_func(const void* a, const void* b) {
     return (
-        ((struct index_record*)a)->osm_id - ((struct index_record*)b)->osm_id
+        ((struct index_record*)a)->osm_id > ((struct index_record*)b)->osm_id
     );
 }
 
@@ -48,8 +48,9 @@ void free_indexed(struct indexed_data* data) {
 const struct record* lookup_indexed(struct indexed_data *data, int64_t needle) {
     int bottom = 0;
     int top = data->n;
+    int mid;
     while (top >= bottom) {
-        int mid = bottom + ((top - bottom) / 2);
+        mid = bottom + ((top - bottom) / 2);
         if ((&data->irs[mid])->osm_id < needle) {
             bottom = mid + 1;
         }