diff --git a/a3/program.c b/a3/program.c
index af1c18a..65d686e 100644
--- a/a3/program.c
+++ b/a3/program.c
@@ -5,7 +5,7 @@
 #include <ctype.h>
 #include <stdbool.h>
 
-void check_heap(int size, int* array){
+void check_heap(int size, long int* array){
     int i;
     for(i = 0; i < size; i++){
         int c = (2 * i) + 1; 
@@ -37,12 +37,12 @@ void space(int l){
 
 }
 
-void print(int *arr, int i, int size, int c, int level){
+void print(long int *arr, int i, int size, int c, int level){
     if(i >= size){
         return;
     } 
     space(level);
-    printf("%d\n", arr[i]);
+    printf("%ld\n", arr[i]);
     print(arr,i*2+1, size, c, level+1);
 
     print(arr, i*2+2, size, c, level+1);
@@ -50,17 +50,25 @@ void print(int *arr, int i, int size, int c, int level){
 
 
 int main() {
-    char* cisla = calloc(100, sizeof(char));
+    char cisla[100];
+        
+    char *r = fgets(cisla, 100, stdin);
+    if(r == NULL){
+        return 0;
+    }
+    
+    cisla[strlen(cisla)-1] = '\0';
+    int size = strlen(cisla);
+    
+    long int num[size];
     
-    fgets(cisla, 100, stdin);
-    int size = cisla[strlen(cisla)-1];
-    int* num = calloc(size, sizeof(int));
     char *end;
     int i = 0;
     while(i != size){     
         if(i == 0){
             long int c = strtol(cisla, &end, 10);
             num[i] = c;
+     
             
         }  
         else{
@@ -72,18 +80,17 @@ int main() {
     }
     i = 0;
     int count = 0;
-    while(num[i] != 0){
+    while(num[i] != '\0'){
         count++;
-        i++;
+       i++;
     }
+    
     i = 0;
     int index = 0;
     int l = 0;
-    int k = 36;
     check_heap(count, num);
     int j = 0;
     print(num, index, count,num[0],l);
-    free(cisla);
-    free(num);
+    
     return 0;
 }