diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..cb66980
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+__cache__
diff --git a/total_cost.py b/total_cost.py
index 19fda7c..3dfb7f6 100644
--- a/total_cost.py
+++ b/total_cost.py
@@ -1,5 +1,7 @@
-import sys
+from json.decoder import JSONDecodeError
+import json
 import re
+import sys
 ITEMS = {}
 ################################################################################################################################
 #                                 file operations                                                                              #
@@ -7,6 +9,33 @@ ITEMS = {}
 #           || || || || || || || || || || ||                                                                                   #
 #           \/ \/ \/ \/ \/ \/ \/ \/ \/ \/ \/                                                                                   #
 ################################################################################################################################
+def to_dict(obj):
+    return obj.__dict_repr__
+
+def from_dict(d):
+    name = d['name']
+    type = d.pop('type')
+    cls = globals()[type]
+    instance = cls(**d)
+    instance.__dict__.update(d)
+    global ITEMS
+    ITEMS[name] = instance
+
+def to_json():
+    global ITEMS
+    if ITEMS:
+        ret = list(map(to_dict,ITEMS.values()))
+        with open('__cache__','w') as file:
+            json.dump(ret,file)
+    else:
+        with open('__cache__','w') as file:
+            json.dump([],file)
+def from_json():
+    global ITEMS
+    with open('__cache__') as file:
+        data = json.load(file)
+    for item in data:
+        from_dict(item)
 
 ################################################################################################################################
 #                                 user input                                                                                   #
@@ -18,7 +47,7 @@ class user_input:
     def __init__(self,comp_name):
         valid = ('raw','compound')
         error = True
-        while not error:
+        while error:
             try:
                 type = int(input("~{}~\ntype (0. {} | 1. {}): ".format(comp_name,*valid)))
                 error = False
@@ -52,8 +81,6 @@ def recursive_fill_in(comp_name):
             for sub in res.subs.keys():
                 recursive_fill_in(sub)
 
-
-
 ################################################################################################################################
 #                                 complexity                                                                                   #
 #          this section is dedicated to operations that involve all processing and understanding of the input data             #
@@ -63,17 +90,22 @@ def recursive_fill_in(comp_name):
 class item:
     def __init__(self,name):
         self.name = name
-        global ITEMS
-        ITEMS[name] = self
+        self.__dict_repr__ = {
+            'name':name,
+            'type':type(self).__name__
+        }
 class raw_material(item):
-    def __init__(self,name):
+    def __init__(self,name,**placeholder):
         super().__init__(name)
         self.complexity = 0
+
 class complex_item(item):
-    def __init__(self,name,sub_components):
+    def __init__(self,name,sub_components,**placeholder):
         super().__init__(name)
         self.sub_components = sub_components
+        self.__dict_repr__['sub_components'] = sub_components
         self.naive_complexity = True
+        self.__dict_repr__['naive_complexity'] = True
         self.all_sub = set(self.sub_components.keys())
 
     def recalculate_total_completixy(self):
@@ -112,14 +144,23 @@ class complex_item(item):
         return ret
 
     def get_build_info(self):
-        component_view = self.get_raw_material_cost()
-        material_view = self.get_component_cost()
+        material_view = self.get_raw_material_cost()
+        component_view = self.get_component_cost()
         build_order = component_view.items()
         build_order = sorted(build_order,key = lambda item: ITEMS[item[0]].complexity)
         return material_view,build_order
 def main():
+    import os
+    if not os.path.exists('__cache__'):
+        to_json()
+    try:
+        from_json()
+    except JSONDecodeError:
+        to_json()
+        from_json()
     name = sys.argv[1]
     recursive_fill_in(name)
-    print(ITEMS[name].get_build_info())
+    print(*ITEMS[name].get_build_info(),sep='\n')
+    to_json()
 if __name__ == "__main__":
     main()
\ No newline at end of file