diff --git a/cv7/a_station.c b/cv7/a_station.c
index 7af372e..6bf7439 100644
--- a/cv7/a_station.c
+++ b/cv7/a_station.c
@@ -2,39 +2,76 @@
 #include <stdlib.h>
 #include <string.h>
 
-//#define SIZE 100;
-
 struct station* create_station(){
-    struct station* station = (struct station*)calloc(1,sizeof(struct station));
-    station->tracks = (struct car**)calloc(STATION_SIZE, sizeof(struct car*));
-    station->track_count = STATION_SIZE;
-    return station;
+   struct station* station = (struct station*)calloc(1,sizeof(struct station));
+   station->tracks = (struct car**)calloc(STATION_SIZE, sizeof(struct car*));
+   station->track_count = STATION_SIZE;
+   return station;
 }
 
 void destroy_station(struct station* station){
-
+    free(station->tracks);
+    free(station);
 }
 
 int select_track(struct station* station, const char* target){
-    
-	return 0;
+    if(!station || station->track_count == 0)
+        return 0;
+
+    int hash_result = (int)strlen(target) % station->track_count;
+    struct car* current = station->tracks[hash_result];
+
+    while(current != NULL && abs(strcmp(station->tracks[hash_result]->value, target))){
+        hash_result = (hash_result * 2 + 1) % station->track_count;
+        current = station->tracks[hash_result];
+    }
+
+    return hash_result;
 }
 
 void add_target_capacity(struct station* station,const char* target, int capacity){
+    if(!station || station->track_count == 0)
+        return;
+
+    int myTrack = select_track(station, target);
+
+    struct car* uniqueCar = station->tracks[myTrack];
+    if(!uniqueCar) {
+        uniqueCar = (struct car *) calloc(1, sizeof(struct car));
+        uniqueCar->capacity = 0;
+        strcpy(uniqueCar->value, target);
+        uniqueCar->next = NULL;
+    }
+    uniqueCar->capacity += capacity;
+    station->tracks[myTrack] = uniqueCar;
 }
 
 int get_target_capacity(struct station* station,const char* target){
-    
-	return 0;
+    if(!station || station->track_count == 0 || station->tracks[select_track(station, target)] == NULL)
+        return 0;
+
+    return station->tracks[select_track(station, target)]->capacity;
 }
 
 int count_targets(struct station* station){
-    
-	
-	return 0;
+    if(!station || station->track_count == 0)
+        return 0;
+
+    int numberOfTargets = 0;
+    for(int i = 0; i < station->track_count; i++)
+        numberOfTargets += (station->tracks[i] == NULL) ? 0 : 1;
+
+    return numberOfTargets;
 }
 
 int count_capacity(struct station* station){
-    
-	return 0;
-}
\ No newline at end of file
+    if(!station || station->track_count == 0)
+        return 0;
+
+    int totalCapacity = 0;
+    for(int i = 0; i < station->track_count; i++)
+        totalCapacity += (station->tracks[i] == NULL) ? 0 : station->tracks[i]->capacity;
+
+    return totalCapacity;
+}
+