diff --git a/.gitmodules b/.gitmodules
index e8c57ea..824c2f7 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -89,6 +89,6 @@
 [submodule "2021/Bond-009"]
 	path = 2021/Bond-009
 	url = https://github.com/Bond-009/advent-of-code-2021
-[submodule "Timpy"]
-	path = Timpy
+[submodule "2021/Timpy"]
+	path = 2021/Timpy
 	url = https://github.com/timodw/aoc_2021
diff --git a/2021/Timpy b/2021/Timpy
new file mode 160000
index 0000000..d369b74
--- /dev/null
+++ b/2021/Timpy
@@ -0,0 +1 @@
+Subproject commit d369b74738ac84d6742cd1b49854fd57d1ba01b2
diff --git a/2021/Timpy/day_1/input.txt b/2021/Timpy/day_1/input.txt
deleted file mode 100644
index fc87999..0000000
--- a/2021/Timpy/day_1/input.txt
+++ /dev/null
@@ -1,2000 +0,0 @@
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\ No newline at end of file
diff --git a/2021/Timpy/day_1/solution.ipynb b/2021/Timpy/day_1/solution.ipynb
deleted file mode 100644
index df31146..0000000
--- a/2021/Timpy/day_1/solution.ipynb
+++ /dev/null
@@ -1,1219 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Imports"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import numpy as np\n",
-    "from time import time\n",
-    "\n",
-    "from numpy.lib.stride_tricks import sliding_window_view"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Load input"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 13,
-   "metadata": {
-    "scrolled": true
-   },
-   "outputs": [],
-   "source": [
-    "#INPUT_FILE = 'test.txt'\n",
-    "INPUT_FILE = 'input.txt'"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 14,
-   "metadata": {
-    "scrolled": true
-   },
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "[188,\n",
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-       " 2954,\n",
-       " 2957,\n",
-       " 2965,\n",
-       " 2970,\n",
-       " 2971,\n",
-       " 2972,\n",
-       " 2981,\n",
-       " 2984,\n",
-       " 2994,\n",
-       " 3006,\n",
-       " 3028,\n",
-       " 3020,\n",
-       " 3023,\n",
-       " 3026,\n",
-       " 3021,\n",
-       " 3024,\n",
-       " 3016,\n",
-       " 3041,\n",
-       " 3042,\n",
-       " 3053,\n",
-       " 3055,\n",
-       " 3056,\n",
-       " 3057,\n",
-       " 3060,\n",
-       " 3061,\n",
-       " 3062,\n",
-       " 3069,\n",
-       " 3070,\n",
-       " 3097,\n",
-       " 3104,\n",
-       " 3107,\n",
-       " 3110,\n",
-       " 3112,\n",
-       " 3114,\n",
-       " 3115,\n",
-       " 3122,\n",
-       " 3120,\n",
-       " 3121,\n",
-       " 3142,\n",
-       " 3143,\n",
-       " 3167,\n",
-       " 3169,\n",
-       " 3170,\n",
-       " 3172,\n",
-       " 3180,\n",
-       " 3182,\n",
-       " 3181,\n",
-       " 3182,\n",
-       " 3183,\n",
-       " 3184,\n",
-       " 3185,\n",
-       " 3186,\n",
-       " 3201,\n",
-       " 3181,\n",
-       " 3185,\n",
-       " 3187,\n",
-       " 3166,\n",
-       " 3162,\n",
-       " 3164,\n",
-       " 3167,\n",
-       " 3168,\n",
-       " 3180,\n",
-       " 3189,\n",
-       " 3190,\n",
-       " 3191,\n",
-       " 3189,\n",
-       " 3191,\n",
-       " 3196,\n",
-       " 3213,\n",
-       " 3224,\n",
-       " 3229,\n",
-       " 3233,\n",
-       " 3232,\n",
-       " 3245,\n",
-       " 3279,\n",
-       " 3302,\n",
-       " 3313,\n",
-       " 3316,\n",
-       " 3333,\n",
-       " 3334,\n",
-       " 3337,\n",
-       " 3339,\n",
-       " 3348,\n",
-       " 3364,\n",
-       " 3365,\n",
-       " 3375,\n",
-       " 3380,\n",
-       " 3381,\n",
-       " 3382,\n",
-       " 3402,\n",
-       " 3418,\n",
-       " 3433,\n",
-       " 3438,\n",
-       " 3439,\n",
-       " 3453,\n",
-       " 3482,\n",
-       " 3484,\n",
-       " 3488,\n",
-       " 3497,\n",
-       " 3511,\n",
-       " 3500,\n",
-       " 3502,\n",
-       " 3497,\n",
-       " 3502,\n",
-       " 3505,\n",
-       " 3516,\n",
-       " 3517,\n",
-       " 3519,\n",
-       " 3525,\n",
-       " 3520,\n",
-       " 3524,\n",
-       " 3528,\n",
-       " 3533,\n",
-       " 3548,\n",
-       " 3552,\n",
-       " 3555,\n",
-       " 3562,\n",
-       " 3573,\n",
-       " 3577,\n",
-       " 3579,\n",
-       " 3587,\n",
-       " 3592,\n",
-       " 3620,\n",
-       " 3615,\n",
-       " 3616,\n",
-       " 3619,\n",
-       " 3620,\n",
-       " 3631,\n",
-       " 3630,\n",
-       " 3640,\n",
-       " 3674,\n",
-       " 3675,\n",
-       " 3684,\n",
-       " 3685,\n",
-       " 3699,\n",
-       " 3701,\n",
-       " 3694,\n",
-       " 3727,\n",
-       " 3746,\n",
-       " 3749,\n",
-       " 3742,\n",
-       " 3745,\n",
-       " 3748,\n",
-       " 3756,\n",
-       " 3759,\n",
-       " 3746,\n",
-       " 3759,\n",
-       " 3762,\n",
-       " 3763,\n",
-       " 3748,\n",
-       " 3762,\n",
-       " 3760,\n",
-       " 3766,\n",
-       " 3770,\n",
-       " 3774,\n",
-       " 3776,\n",
-       " 3778,\n",
-       " 3785,\n",
-       " 3787,\n",
-       " 3788,\n",
-       " 3815,\n",
-       " 3816,\n",
-       " 3822,\n",
-       " 3832,\n",
-       " 3831,\n",
-       " 3832,\n",
-       " 3835,\n",
-       " 3834,\n",
-       " 3820,\n",
-       " 3822,\n",
-       " 3823,\n",
-       " 3825,\n",
-       " 3826,\n",
-       " 3831,\n",
-       " 3833,\n",
-       " 3843,\n",
-       " 3864,\n",
-       " 3889,\n",
-       " 3895,\n",
-       " 3903,\n",
-       " 3908,\n",
-       " 3910,\n",
-       " 3909,\n",
-       " 3911,\n",
-       " 3912,\n",
-       " 3913,\n",
-       " 3921,\n",
-       " 3948,\n",
-       " 3949,\n",
-       " 3954,\n",
-       " 3955,\n",
-       " 3958,\n",
-       " 3960,\n",
-       " 3962,\n",
-       " 3963,\n",
-       " 3975,\n",
-       " 3986,\n",
-       " 3989,\n",
-       " 3990,\n",
-       " 3992,\n",
-       " 4006,\n",
-       " 4012,\n",
-       " 4032,\n",
-       " 4036,\n",
-       " 4037,\n",
-       " 4038,\n",
-       " 4041,\n",
-       " 4048,\n",
-       " 4056,\n",
-       " 4041,\n",
-       " 4044,\n",
-       " 4048,\n",
-       " 4077,\n",
-       " 4076,\n",
-       " 4088,\n",
-       " 4072,\n",
-       " 4073,\n",
-       " 4075,\n",
-       " 4080,\n",
-       " 4075,\n",
-       " 4080,\n",
-       " 4081,\n",
-       " 4110,\n",
-       " 4139,\n",
-       " 4142,\n",
-       " 4143,\n",
-       " 4145,\n",
-       " 4148,\n",
-       " 4155,\n",
-       " 4157,\n",
-       " 4163,\n",
-       " 4164,\n",
-       " 4174,\n",
-       " 4181,\n",
-       " 4186,\n",
-       " 4193,\n",
-       " 4195,\n",
-       " 4198,\n",
-       " 4197,\n",
-       " 4202,\n",
-       " 4209,\n",
-       " 4208,\n",
-       " 4211,\n",
-       " 4213,\n",
-       " 4211,\n",
-       " 4223,\n",
-       " 4222,\n",
-       " 4224,\n",
-       " 4232,\n",
-       " 4234,\n",
-       " 4239,\n",
-       " 4243,\n",
-       " 4245,\n",
-       " 4247,\n",
-       " 4248,\n",
-       " 4252,\n",
-       " 4245,\n",
-       " 4253,\n",
-       " 4289,\n",
-       " 4288,\n",
-       " 4290,\n",
-       " 4292,\n",
-       " 4294,\n",
-       " 4295,\n",
-       " 4298,\n",
-       " 4308,\n",
-       " 4314,\n",
-       " 4315,\n",
-       " 4320,\n",
-       " 4328,\n",
-       " 4326,\n",
-       " 4328,\n",
-       " 4334,\n",
-       " 4330,\n",
-       " 4339,\n",
-       " 4362,\n",
-       " 4363,\n",
-       " 4364,\n",
-       " 4365,\n",
-       " 4366,\n",
-       " 4375,\n",
-       " 4388,\n",
-       " 4389,\n",
-       " 4395,\n",
-       " 4382,\n",
-       " 4393,\n",
-       " 4385,\n",
-       " 4381,\n",
-       " 4380,\n",
-       " 4391,\n",
-       " 4392,\n",
-       " 4409,\n",
-       " 4410,\n",
-       " 4414,\n",
-       " 4434,\n",
-       " 4445,\n",
-       " 4452,\n",
-       " 4457,\n",
-       " 4453,\n",
-       " 4461,\n",
-       " 4469,\n",
-       " 4468,\n",
-       " 4487,\n",
-       " 4482,\n",
-       " 4505,\n",
-       " 4512,\n",
-       " 4513,\n",
-       " 4517,\n",
-       " 4535,\n",
-       " 4542,\n",
-       " 4544,\n",
-       " 4546,\n",
-       " 4559,\n",
-       " 4560,\n",
-       " 4575,\n",
-       " 4576,\n",
-       " 4578,\n",
-       " 4579,\n",
-       " 4580,\n",
-       " 4581,\n",
-       " 4582,\n",
-       " 4585,\n",
-       " 4589,\n",
-       " 4588,\n",
-       " 4592,\n",
-       " 4593,\n",
-       " 4594,\n",
-       " 4620,\n",
-       " 4621,\n",
-       " 4632,\n",
-       " 4633,\n",
-       " 4634,\n",
-       " 4640,\n",
-       " 4641,\n",
-       " 4643,\n",
-       " 4651,\n",
-       " 4666,\n",
-       " 4672,\n",
-       " 4673,\n",
-       " 4672,\n",
-       " 4674,\n",
-       " 4695,\n",
-       " 4697,\n",
-       " 4707,\n",
-       " 4706,\n",
-       " 4708,\n",
-       " 4709,\n",
-       " 4705,\n",
-       " 4702,\n",
-       " 4694,\n",
-       " 4732,\n",
-       " 4734,\n",
-       " 4735,\n",
-       " 4723,\n",
-       " 4728,\n",
-       " 4734,\n",
-       " 4752,\n",
-       " 4754,\n",
-       " 4756,\n",
-       " 4759,\n",
-       " 4768,\n",
-       " 4770,\n",
-       " 4773,\n",
-       " 4780,\n",
-       " 4781,\n",
-       " 4783,\n",
-       " 4792,\n",
-       " 4797,\n",
-       " 4806,\n",
-       " 4825,\n",
-       " 4833,\n",
-       " 4839,\n",
-       " 4838,\n",
-       " 4842,\n",
-       " 4843,\n",
-       " 4853,\n",
-       " 4851,\n",
-       " 4852,\n",
-       " 4853,\n",
-       " 4834,\n",
-       " 4835,\n",
-       " 4836,\n",
-       " 4837,\n",
-       " 4838,\n",
-       " 4837,\n",
-       " 4833,\n",
-       " 4843,\n",
-       " 4844,\n",
-       " 4825,\n",
-       " 4826,\n",
-       " 4832,\n",
-       " 4833,\n",
-       " 4832,\n",
-       " 4840,\n",
-       " 4844,\n",
-       " 4838,\n",
-       " 4839,\n",
-       " 4862,\n",
-       " 4867,\n",
-       " 4868,\n",
-       " 4873,\n",
-       " 4877,\n",
-       " 4881,\n",
-       " 4888,\n",
-       " 4891,\n",
-       " 4896,\n",
-       " 4911,\n",
-       " 4910,\n",
-       " 4911,\n",
-       " 4906,\n",
-       " 4913,\n",
-       " 4915,\n",
-       " 4918,\n",
-       " 4926,\n",
-       " 4933,\n",
-       " 4968,\n",
-       " 4969,\n",
-       " 4970,\n",
-       " 4974,\n",
-       " ...]"
-      ]
-     },
-     "execution_count": 14,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "input_list = [int(height) for height in open(INPUT_FILE, 'r')]\n",
-    "input_list"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 15,
-   "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "array([  188,   192,   193, ..., 10397, 10406, 10415], dtype=uint64)"
-      ]
-     },
-     "execution_count": 15,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
-   "source": [
-    "input_list_np = np.loadtxt(INPUT_FILE, dtype='uint64')\n",
-    "input_list_np"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Part 1"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 16,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SOLUTION: 1754, TIME: 0.3273ms\n"
-     ]
-    }
-   ],
-   "source": [
-    "start_t = time()\n",
-    "solution = sum([x > y for x, y in zip(input_list[1:], input_list[:-1])])\n",
-    "end_t = time()\n",
-    "print(f'SOLUTION: {solution}, TIME: {round((end_t - start_t) * 1000, 4)}ms')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 17,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SOLUTION: 1754, TIME: 0.1428ms\n"
-     ]
-    }
-   ],
-   "source": [
-    "start_t = time()\n",
-    "solution = np.greater(input_list_np[1:], input_list_np[:-1]).sum()\n",
-    "end_t = time()\n",
-    "print(f'SOLUTION: {solution}, TIME: {round((end_t - start_t) * 1000, 4)}ms')"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Part 2"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 18,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "WINDOW_SIZE = 3"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 27,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SOLUTION: 1789, TIME: 1.07ms\n"
-     ]
-    }
-   ],
-   "source": [
-    "start_t = time()\n",
-    "windows_sum = [sum(input_list[i:i + WINDOW_SIZE]) for i in range(len(input_list) - WINDOW_SIZE + 1)]\n",
-    "solution = sum([x > y for x, y in zip(windows_sum[1:], windows_sum[:-1])])\n",
-    "end_t = time()\n",
-    "print(f'SOLUTION: {solution}, TIME: {round((end_t - start_t) * 1000, 4)}ms')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 28,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SOLUTION: 1789, TIME: 0.5288ms\n"
-     ]
-    }
-   ],
-   "source": [
-    "start_t = time()\n",
-    "windows_sum = np.sum(sliding_window_view(input_list_np, WINDOW_SIZE), axis=1)\n",
-    "solution = np.greater(windows_sum[1:], windows_sum[:-1]).sum()\n",
-    "end_t = time()\n",
-    "print(f'SOLUTION: {solution}, TIME: {round((end_t - start_t) * 1000, 4)}ms')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.8.5"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 4
-}
diff --git a/2021/Timpy/day_1/test.txt b/2021/Timpy/day_1/test.txt
deleted file mode 100644
index 59dad67..0000000
--- a/2021/Timpy/day_1/test.txt
+++ /dev/null
@@ -1,10 +0,0 @@
-199
-200
-208
-210
-200
-207
-240
-269
-260
-263
\ No newline at end of file
diff --git a/2021/Timpy/template/input.txt b/2021/Timpy/template/input.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/2021/Timpy/template/solution.ipynb b/2021/Timpy/template/solution.ipynb
deleted file mode 100644
index da33bba..0000000
--- a/2021/Timpy/template/solution.ipynb
+++ /dev/null
@@ -1,144 +0,0 @@
-{
- "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Imports"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 1,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import numpy as np\n",
-    "from time import time"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Load input"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 2,
-   "metadata": {
-    "scrolled": true
-   },
-   "outputs": [],
-   "source": [
-    "#INPUT_FILE = 'test.txt'\n",
-    "INPUT_FILE = 'input.txt'"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 4,
-   "metadata": {
-    "scrolled": true
-   },
-   "outputs": [],
-   "source": [
-    "input_list = None\n",
-    "input_list"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 3,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "input_list_np = None\n",
-    "input_list_np"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Part 1"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 5,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SOLUTION: None, TIME: 0.056ms\n"
-     ]
-    }
-   ],
-   "source": [
-    "start_t = time()\n",
-    "solution = None\n",
-    "end_t = time()\n",
-    "print(f'SOLUTION: {solution}, TIME: {round((end_t - start_t) * 1000, 4)}ms')"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {},
-   "source": [
-    "# Part 2"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 7,
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SOLUTION: None, TIME: 0.0641ms\n"
-     ]
-    }
-   ],
-   "source": [
-    "start_t = time()\n",
-    "solution = None\n",
-    "end_t = time()\n",
-    "print(f'SOLUTION: {solution}, TIME: {round((end_t - start_t) * 1000, 4)}ms')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": []
-  }
- ],
- "metadata": {
-  "kernelspec": {
-   "display_name": "Python 3",
-   "language": "python",
-   "name": "python3"
-  },
-  "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.8.5"
-  }
- },
- "nbformat": 4,
- "nbformat_minor": 4
-}
diff --git a/2021/Timpy/template/test.txt b/2021/Timpy/template/test.txt
deleted file mode 100644
index e69de29..0000000
diff --git a/2021/rien b/2021/rien
index 0566593..28ad9f0 160000
--- a/2021/rien
+++ b/2021/rien
@@ -1 +1 @@
-Subproject commit 0566593e718c480dc37262326dd4de868b8759bc
+Subproject commit 28ad9f03cf773f8a729e2a307e34157123b36483