diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f80a4a..95ce18d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,7 +36,8 @@ include_directories(
 	${GMP_INCLUDE_DIR})
 
 set(SRCS
-	src/main.c)
+	"src/linked_list.c"
+	"src/main.c")
 
 # Define the C flags.
 set(CMAKE_C_FLAGS "-std=gnu99 -Wall -Wextra -Werror -Wfatal-errors -Wmissing-declarations -pedantic-errors")
diff --git a/src/linked_list.c b/src/linked_list.c
new file mode 100644
index 0000000..73c5727
--- /dev/null
+++ b/src/linked_list.c
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2018  Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+ * Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "linked_list.h"
+
+#include <stdlib.h>
+
+void llist_init(struct llist *list) {
+	list->size = 0;
+	list->first = NULL;
+	list->last = NULL;
+}
+
+int llist_add(struct llist *list, mpz_t num) {
+	struct llist_item *item =
+		malloc(sizeof(struct llist_item));
+	if(!item)
+		return 0;
+
+	mpz_init(item->num);
+	mpz_set(item->num, num);
+
+	if(!(list->first))
+	{
+		list->first = item;
+		list->last = item;
+	}
+	else
+	{
+		list->last->next = item;
+		list->last = item;
+	}
+	list->size++;
+
+	return 1;
+}
+
+void llist_deinit(struct llist *list) {
+	struct llist_item *i = list->first;
+
+	while(i)
+	{
+		mpz_clear(i->num);
+		struct llist_item *next = i->next;
+		free(i);
+		i = next;
+	}
+
+	list->size = 0;
+}
diff --git a/src/linked_list.h b/src/linked_list.h
new file mode 100644
index 0000000..f3e3ccc
--- /dev/null
+++ b/src/linked_list.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2018  Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+ * Author: Ortega Froysa, Nicolás <nortega@themusicinnoise.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <gmp.h>
+
+struct llist_item {
+	mpz_t num;
+	struct llist_item *prev;
+	struct llist_item *next;
+};
+
+struct llist {
+	struct llist_item *first;
+	struct llist_item *last;
+	size_t size;  // size of the list
+};
+
+void llist_init(struct llist *list);
+int llist_add(struct llist *list, mpz_t num);
+void llist_deinit(struct llist *list);
diff --git a/src/main.c b/src/main.c
index ed05a94..cac8b94 100644
--- a/src/main.c
+++ b/src/main.c
@@ -20,7 +20,7 @@
 
 #include "global.h"
 
-int main(int argc, char *argv[]) {
+int main() {
 	printf("Indivisible %s\n", VERSION);
 
 	return 0;