diff --git a/cv7/a_station.c b/cv7/a_station.c
index a4b9e41..ad54553 100644
--- a/cv7/a_station.c
+++ b/cv7/a_station.c
@@ -33,21 +33,23 @@ int select_track(struct station* station, const char* target){
 }
 
 void add_target_capacity(struct station* station,const char* target, int capacity){
-        int track = select_track(station, target);
-        struct car* new_car = (struct car*)malloc(sizeof(struct car));
-    
-        strncpy(new_car->value, target, TARGET_SIZE);
-        new_car->capacity = capacity;
-        new_car->next = NULL; 
+      int track = select_track(station, target);
+    struct car* current_car = station->tracks[track];
 
-        if (station->tracks[track] == NULL) {
-        station->tracks[track] = new_car;
-        } else {
-        new_car->next = station->tracks[track];
-        station->tracks[track] = new_car;
+    while (current_car != NULL) {
+        if (strcmp(current_car->value, target) == 0) {
+            current_car->capacity += capacity;
+            return;
+        }
+        current_car = current_car->next;
     }
-}
 
+    struct car* new_car = (struct car*)malloc(sizeof(struct car));
+    strncpy(new_car->value, target, TARGET_SIZE);
+    new_car->capacity = capacity;
+    new_car->next = station->tracks[track];
+    station->tracks[track] = new_car;
+}
 
 int get_target_capacity(struct station* station,const char* target){
         int track = select_track(station, target);