diff --git a/Home/PL/HW/Hanoi Towers/appHT b/Home/PL/HW/Hanoi Towers/appHT
new file mode 100755
index 0000000..1af3a85
Binary files /dev/null and b/Home/PL/HW/Hanoi Towers/appHT differ
diff --git a/main/HTfromDron/funcst.c b/main/HTfromDron/funcst.c
new file mode 100644
index 0000000..db7a83a
--- /dev/null
+++ b/main/HTfromDron/funcst.c
@@ -0,0 +1,219 @@
+
+#include "lib.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+
+#define max(x, y) (((x) > (y)) ? (x) : (y))
+
+void pr(node *tmp)
+{
+	if (tmp == NULL)
+	{
+		printf("[%p]\n", tmp);
+		return;
+	}
+	while (tmp)
+	{
+		printf("[%14p]<-[%14p]->[%14p] ", tmp->prev, tmp, tmp->next);
+		printf("data: [%4ld] s[%s]\n", tmp->data, tmp->s);
+		tmp = tmp->next;
+	}
+	printf("-------------\n");
+}
+node *add_head(node *head, int hh)
+{
+	node *tmp = NULL;
+	int i;
+	if ((tmp = malloc(sizeof(node))) == NULL)
+	{
+		perror("malloc: NULL");
+		exit(2);
+	}
+	tmp->prev = NULL;
+	tmp->data = hh;
+	for (i = 0; i < N - 1; i++)
+		tmp->s[i] = ((char)(65 + rand() % 25));
+	tmp->s[N - 1] = '\0';
+	if (head == NULL)
+		tmp->next = NULL;
+	else
+	{
+		tmp->next = head;
+		head->prev = tmp;
+	}
+	return tmp;
+}
+node *del_head(node *head)
+{
+	node *tmp = head;
+	if (head == NULL)
+		return NULL;
+	if (head->next == NULL)
+	{
+		free(head);
+		return NULL;
+	}
+	head = head->next;
+	head->prev = NULL;
+	free(tmp);
+	return head;
+}
+
+
+int length(node *list)
+{
+	node *tmp = list;
+	int res = 0;
+	if (list == NULL)
+		return 0;
+	if (list->data == 0 && !strcmp(list->s, "\0"))
+		return 0;
+	else
+	{
+		while (tmp->prev != NULL)
+			tmp = tmp->prev;
+		while (tmp != NULL)
+		{
+			res++;
+			tmp = tmp->next;
+		}
+	}
+	return res;
+}
+
+node *adv_add_head(node *head, int hh, char string[])
+{
+	node *tmp = NULL;
+	if ((tmp = malloc(sizeof(node))) == NULL)
+	{
+		perror("malloc: NULL");
+		exit(2);
+	}
+	tmp->prev = NULL;
+	tmp->data = hh;
+	memcpy(tmp->s, string, N);
+	if (head == NULL)
+		tmp->next = NULL;
+	else
+	{
+		tmp->next = head;
+		head->prev = tmp;
+	}
+	return tmp;
+}
+void swap(node *a, node *b)
+{
+	node *tmp = NULL;
+	if ((tmp = malloc(sizeof(node))) == NULL)
+		exit(1);
+	tmp->data = a->data;
+	a->data = b->data;
+	b->data = tmp->data;
+	memcpy(tmp->s, a->s, N);
+	memcpy(a->s, b->s, N);
+	memcpy(b->s, tmp->s, N);
+	free(tmp);
+}
+
+node *get(node *list, int n)
+{
+	if (n >= length(list))
+		exit(3);
+	int i;
+	for (i = 0; i < n; i++)
+		list = list->next;
+	return list;
+}
+
+node *sort(node *head)
+{
+	if (head == NULL || head->next == NULL)
+		return head;
+	int i, j, n = length(head);
+	for (i = 0; i < n - 1; i++)
+	{
+		for (j = i + 1; j < n; j++)
+		{
+			if (get(head, j)->data < get(head, i)->data)
+				swap(get(head, i), get(head, j));
+		}
+	}
+	return head;
+}
+pointer *add_head_address(pointer *head, node **address){
+	pointer *tmp = NULL;
+	if ((tmp = malloc(sizeof(pointer))) == NULL)
+	{
+		perror("malloc: NULL");
+		exit(2);
+	}
+	tmp->address = address;
+	if (head == NULL)
+		tmp->next = NULL;
+	else
+	{
+		tmp->next = head;
+	}
+	return tmp;
+}
+
+node* printextra(node *head, int len, int i){
+	if (len < i || len == 0){
+		printf("******************************************|");
+		return head;
+	}
+	else{
+		printf("[%14p] data: [%4ld] s[%s]|", head, head->data, head->s);
+		return head->prev;
+	}
+} 
+node *end(node *head){
+	node *tmp = NULL;
+	tmp = head;
+	if (head == NULL) return head;
+ 	while (tmp->next != NULL) tmp = tmp->next;
+	return tmp;
+}
+
+void printftof(pointer *adresses){
+	node *head1 = *(adresses->address), *head2 = *(adresses->next->address), *head3 = *(adresses->next->next->address);
+	int a = length(head1), b = length(head2), c = length(head3), maximum, i;
+	maximum = max(max(a,b), c);
+	head1 = end(head1);
+	head2 = end(head2);
+	head3 = end(head3);
+	for ( i = maximum; i > 0; i--){
+		head1 = printextra(head1, a, i);
+		head2 = printextra(head2, b, i);
+		head3 = printextra(head3, c, i);
+		printf("\n");
+	}
+	printf("---------------------------------------------------------------------------------------------------------------------------------\n");
+	printf("Tower 1                                   |Tower 2                                   |Tower 3                                   |\n");
+	printf("---------------------------------------------------------------------------------------------------------------------------------\n\n");
+}
+
+
+void hanoi_tower(int n, node **head_from, node **head_to, node **head_aux, pointer *adresses){	
+	if (n == 0)
+	{
+		printf("No linked list");
+		exit(6);
+	}
+	else if (n == 1)
+	{	
+		if (length(*head_to)==0) printftof(adresses);
+		*head_to = adv_add_head(*head_to, (*head_from)->data, (*head_from)->s);
+		*head_from = del_head(*head_from);
+		if (length(*head_from)==0) printftof(adresses);
+		return;
+	}
+	hanoi_tower(n - 1, head_from, head_aux, head_to, adresses);
+	printftof(adresses);
+	*head_to = adv_add_head(*head_to, (*head_from)->data, (*head_from)->s);
+	*head_from = del_head(*head_from);
+	printftof(adresses);
+	hanoi_tower(n - 1, head_aux, head_to, head_from, adresses);
+}
diff --git a/main/HTfromDron/lib.h b/main/HTfromDron/lib.h
new file mode 100644
index 0000000..2b3645e
--- /dev/null
+++ b/main/HTfromDron/lib.h
@@ -0,0 +1,27 @@
+#define N 10
+
+
+typedef struct Node {
+	long int data;
+	struct Node *next;
+	struct Node *prev;
+	char s[N];
+} node;
+typedef struct nodepointer {
+	struct nodepointer *next;
+	struct Node **address; 
+} pointer;
+
+void pr(node *tmp);
+node *add_head(node *head, int hh);
+node *del_head(node *head);
+pointer *add_head_address(pointer *head, node **address);
+int length(node *list);
+node *sort(node *head);
+node *get(node *list, int n);
+void swap(node *a, node *b);
+node *adv_add_head(node *head, int hh, char string[]);
+void hanoi_tower(int n, node **head_from, node **head_to, node **head_aux, pointer* adresses);
+void printftof(pointer* adresses);
+node *end(node *head);
+node* printextra(node *head, int len, int i);
diff --git a/main/HTfromDron/main.c b/main/HTfromDron/main.c
new file mode 100644
index 0000000..2a7153e
--- /dev/null
+++ b/main/HTfromDron/main.c
@@ -0,0 +1,29 @@
+#include "lib.h"
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <stdlib.h>
+
+int main(int argc, char *argv[]){
+
+	node *head = NULL,*head2 = NULL, *head3 = NULL;
+	pointer *addresses = NULL;
+	int r;
+
+	srand(time(NULL));
+
+	printf("Generated linked list (method of head)\n");
+	while ((r=(rand()%100)) < 75) head = add_head(head, r);
+	pr(head);
+
+	printf("Length of linked list is: %d\n", length(head));
+
+	printf("Sorted linked list\n");
+	sort(head);
+	pr(head);
+	addresses = add_head_address(addresses, &head3);
+	addresses = add_head_address(addresses, &head2);
+	addresses = add_head_address(addresses, &head);
+	hanoi_tower(length(head), &head, &head3, &head2, addresses);
+	return 0;
+}
diff --git a/main/SC/appSC b/main/SC/appSC
new file mode 100755
index 0000000..ed5ec25
Binary files /dev/null and b/main/SC/appSC differ
diff --git a/main/SC/func.c b/main/SC/func.c
new file mode 100644
index 0000000..339f5ab
--- /dev/null
+++ b/main/SC/func.c
@@ -0,0 +1,65 @@
+#include "head.h"
+
+Stack get(Stack *l, int n) {
+  if (n > len(l))
+    exit(3);
+  int i;
+  for (i = 0; i < n; i++) {
+    l = l->next;
+  }
+  return *l;
+}
+
+Stack *add_head(Stack *l, double x) {
+  if (l == NULL) {
+    l = malloc(sizeof(Stack));
+    if (l == NULL)
+      exit(1);
+    l->x = x;
+    l->next = NULL;
+  }
+
+  if (l->x == 0.0) {
+    l->x = x;
+    l->next = NULL;
+    return l;
+  }
+
+  Stack *tmp = malloc(sizeof(Stack));
+  if (tmp == NULL)
+    exit(1);
+
+  tmp->next = l;
+  tmp->x = x;
+  return tmp;
+}
+
+void stack_print(Stack *l) {
+  while (l != NULL) {
+    printf("%lF\n", l->x);
+    l = l->next;
+  }
+}
+
+int len(Stack *l) {
+  int ans = 0;
+  while (l != NULL) {
+    ans++;
+    l = l->next;
+  }
+  return ans;
+}
+
+Stack *del_head(Stack *l) {
+  if (l == NULL)
+    return NULL;
+  else if (l->next == NULL) {
+    free(l);
+    l = NULL;
+    return NULL;
+  }
+  Stack *tmp = l->next;
+  free(l);
+  l = NULL;
+  return tmp;
+}
\ No newline at end of file
diff --git a/main/SC/head.h b/main/SC/head.h
new file mode 100644
index 0000000..e2a67e3
--- /dev/null
+++ b/main/SC/head.h
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#define N 6
+
+typedef struct Stack {
+  double x;
+  struct Stack *next;
+} Stack;
+
+Stack get(Stack *l, int n);
+Stack *add_head(Stack *l, double x);
+void stack_print(Stack *l);
+int len(Stack *l);
+Stack *del_head(Stack *l);
diff --git a/main/SC/main.c b/main/SC/main.c
new file mode 100644
index 0000000..b4ca097
--- /dev/null
+++ b/main/SC/main.c
@@ -0,0 +1,61 @@
+#include "head.h"
+
+int main(int argc, char *argv[]) {
+  srand(time(0));
+  Stack *numbers = malloc(sizeof(Stack));
+  if (numbers == NULL)
+    exit(1);
+
+  char c;
+  char flag = 'f';
+
+  while ((c = getchar()) != EOF) {
+    if (c == '\n') {
+      break;
+    } else if (c == ' ') {
+      flag = 't';
+      continue;
+    }
+
+    switch (c) {
+    case '0' ... '9':
+      if (flag == 't') {
+        numbers = add_head(numbers, (double)(c - '0'));
+        flag = 'f';
+      } else {
+        double a = get(numbers, 0).x;
+        numbers = del_head(numbers);
+        a = a * 10 + c - '0';
+        numbers = add_head(numbers, a);
+      }
+      break;
+
+    case '+':
+    case '-':
+    case '*':
+    case '/':
+      if (len(numbers) < 2) {
+        printf("Invalid expression\n");
+        exit(2);
+      }
+
+      double a = get(numbers, 0).x;
+      numbers = del_head(numbers);
+      double b = get(numbers, 0).x;
+      numbers = del_head(numbers);
+
+      b = (c == '+') ? b + a : b;
+      b = (c == '-') ? b - a : b;
+      b = (c == '*') ? b * a : b;
+      b = (c == '/') ? b / a : b;
+
+      numbers = add_head(numbers, b);
+      break;
+    }
+  }
+
+  printf("result: %lF\n", get(numbers, 0).x);
+
+  free(numbers);
+  return 0;
+}
\ No newline at end of file