diff --git a/graph/main-martingale.ipynb b/graph/main-martingale.ipynb
index 87a80b7..f640048 100644
--- a/graph/main-martingale.ipynb
+++ b/graph/main-martingale.ipynb
@@ -31,20 +31,31 @@
     "BACKUP_RATE = 1\n",
     "\n",
     "TRADE_UNIT = 0.0001\n",
-    "INIT_BUY_JPY = 5000\n",
-    "INIT_SELL_JPY = 5000\n",
-    "MAX_TRADED_JPY = 350000\n",
+    "MAX_BOUGHT_JPY = 1350000\n",
     "\n",
-    "TRADABLE_UNIT_CC_GAIN_JPY = 25000 # TODO: self-adaptive by trend analysis\n",
-    "TRADABLE_UNIT_CC_LOSS_JPY = 125000\n",
+    "GAINABLE_UNIT_CC_SOLD_JPY = 25000 # TODO: self-adaptive by trend analysis\n",
+    "LOSSABLE_UNIT_CC_BOUGHT_JPY = 125000\n",
     "\n",
-    "MIN_UNIT_CC_INIT_TRADE_JPY = 10000\n",
-    "MAX_UNIT_CC_INIT_TRADE_JPY = MIN_UNIT_CC_INIT_TRADE_JPY << 10\n",
-    "MAX_UNIT_CC_LOSS_JPY = MAX_UNIT_CC_INIT_TRADE_JPY\n",
+    "MIN_UNIT_CC_TRADE_JPY = 5000\n",
+    "MAX_UNIT_CC_TRADE_JPY = MIN_UNIT_CC_TRADE_JPY << 10\n",
+    "LOSSABLE_UNIT_CC_SELL_JPY = MAX_UNIT_CC_TRADE_JPY\n",
     "\n",
-    "MAX_GAIN_JPY = MAX_TRADED_JPY << 10 # useless\n",
-    "MAX_LOSS_JPY = MAX_TRADED_JPY << 10 # useless\n",
-    "MAX_TOTAL_LOST_JPY = MAX_TRADED_JPY << 10"
+    "MAX_GAIN_JPY = MAX_BOUGHT_JPY << 10 # useless\n",
+    "MAX_LOSS_JPY = MAX_BOUGHT_JPY << 10 # useless\n",
+    "MAX_LOST_JPY = MAX_BOUGHT_JPY << 10"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import math\n",
+    "MIN_UNIT_CC_BOUGHT_JPY = 15000\n",
+    "INIT_SELL_JPY = 50\n",
+    "INIT_BUY_JPY = MAX_BOUGHT_JPY / math.exp(LOSSABLE_UNIT_CC_BOUGHT_JPY / (MIN_UNIT_CC_BOUGHT_JPY - MIN_UNIT_CC_TRADE_JPY))\n",
+    "INIT_BUY_JPY"
    ]
   },
   {
@@ -101,7 +112,7 @@
     "        self.total_gained_fiat_money = 0\n",
     "\n",
     "    def get_usage(self):\n",
-    "        return self.used_fiat_money / MAX_TRADED_JPY\n",
+    "        return self.used_fiat_money / MAX_BOUGHT_JPY\n",
     "\n",
     "    def get_robot_title(self):\n",
     "        robot_status_description = f'{self.get_usage() * 100:.2f}%'\n",
@@ -153,13 +164,13 @@
     "        self.bought_unit_amount = 0\n",
     "        self.used_fiat_money = 0\n",
     "        self.bought_amount = 0\n",
-    "        self.bought_average_fiat_price = None # MAX_UNIT_CC_INIT_TRADE_JPY\n",
+    "        self.bought_average_fiat_price = None # MAX_UNIT_CC_TRADE_JPY\n",
     "\n",
     "    def clear_sold_status(self):\n",
     "        self.sold_unit_amount = 0\n",
     "        self.got_fiat_money = 0\n",
     "        self.sold_amount = 0\n",
-    "        self.sold_average_fiat_price = None # MAX_UNIT_CC_INIT_TRADE_JPY\n",
+    "        self.sold_average_fiat_price = None # MAX_UNIT_CC_TRADE_JPY\n",
     "\n",
     "    def trim_bought_status(self):\n",
     "        if self.bought_unit_amount > 0:\n",
@@ -307,23 +318,28 @@
     "        self.fsh = open('sample-history.txt', 'a', 1)\n",
     "        self.fth = open('transaction-history.txt', 'a', 1)\n",
     "        return self\n",
-    "  \n",
+    "\n",
     "    def __exit__(self):\n",
     "        self.fsh.close()\n",
     "        self.fth.close()\n",
     "\n",
     "    def get_price(self):\n",
-    "        import requests\n",
-    "        while True:\n",
-    "            try:\n",
-    "                now_ticker = self.pub.get_ticker('eth_jpy')\n",
-    "                return {\n",
-    "                    'now_sell_fiat_price': int(now_ticker.get('buy', '0')) * (1 - 0.0012),\n",
-    "                    'now_buy_fiat_price': int(now_ticker.get('sell', '1')) * (1 + 0.0012)\n",
-    "                }\n",
-    "            except requests.exceptions.ConnectionError:\n",
-    "                import time\n",
-    "                time.sleep(SAMPLE_INTERVAL / TEST_RATIO)\n",
+    "        now_ticker = self.pub.get_ticker('eth_jpy')\n",
+    "        return {\n",
+    "            'now_sell_fiat_price': int(now_ticker.get('buy', '0')) * (1 - 0.0012),\n",
+    "            'now_buy_fiat_price': int(now_ticker.get('sell', '1')) * (1 + 0.0012)\n",
+    "        }\n",
+    "#         import requests\n",
+    "#         while True:\n",
+    "#             try:\n",
+    "#                 now_ticker = self.pub.get_ticker('eth_jpy')\n",
+    "#                 return {\n",
+    "#                     'now_sell_fiat_price': int(now_ticker.get('buy', '0')) * (1 - 0.0012),\n",
+    "#                     'now_buy_fiat_price': int(now_ticker.get('sell', '1')) * (1 + 0.0012)\n",
+    "#                 }\n",
+    "#             except requests.exceptions.ConnectionError:\n",
+    "#                 import time\n",
+    "#                 time.sleep(SAMPLE_INTERVAL / TEST_RATIO)\n",
     "\n",
     "    def get_portfolio(self):\n",
     "        return Portfolio([\n",
@@ -532,12 +548,12 @@
     "from scipy import optimize as opt\n",
     "from numpy.lib import scimath\n",
     "\n",
-    "def get_trade_unit_amount(now_trade_jpy, traded_unit_amount, traded_jpy, tradable_unit_cc_diff_jpy, init_jpy):\n",
+    "def get_trade_unit_amount(now_trade_jpy, traded_unit_amount, traded_jpy, mutable_unit_cc_traded_jpy, max_traded_jpy, init_jpy):\n",
     "    if traded_unit_amount == 0:\n",
     "        return 1\n",
     "    avg_jpy = traded_jpy / (TRADE_UNIT * traded_unit_amount)\n",
     "    diff_jpy = abs(now_trade_jpy - avg_jpy)\n",
-    "    min_diff_jpy = tradable_unit_cc_diff_jpy / scimath.log(MAX_TRADED_JPY / init_jpy)\n",
+    "    min_diff_jpy = mutable_unit_cc_traded_jpy / scimath.log(max_traded_jpy / init_jpy)\n",
     "    return math.ceil(\n",
     "        traded_jpy * opt.fsolve(\n",
     "            lambda c: [\n",
@@ -592,7 +608,7 @@
     "            )\n",
     "\n",
     "            send_slack(\n",
-    "                f'{new_status} => Support level is {MIN_UNIT_CC_INIT_TRADE_JPY} JPY.',\n",
+    "                f'{new_status} => Support level is {MIN_UNIT_CC_TRADE_JPY} JPY.',\n",
     "                'Power by https://jhub.name/', 'good' if new_status.get_total_gain_fiat_money() > 0 else 'danger'\n",
     "            )\n",
     "\n",
@@ -603,7 +619,7 @@
     "                    f'{new_status.robot_name} is turned to Mock', 'Power by https://jhub.name/', 'good'\n",
     "                )\n",
     "\n",
-    "            if new_status.total_gained_fiat_money < -MAX_TOTAL_LOST_JPY:\n",
+    "            if new_status.total_gained_fiat_money < -MAX_LOST_JPY:\n",
     "                break\n",
     "\n",
     "            new_status.sample_number += 1\n",
@@ -627,7 +643,7 @@
     "\n",
     "        if status.sold_unit_amount > 0 and status.now_sell_fiat_price > status.sold_average_fiat_price:\n",
     "            trade_unit_amount = min(\n",
-    "                get_trade_unit_amount(status.now_sell_fiat_price, status.sold_unit_amount, status.got_fiat_money, TRADABLE_UNIT_CC_GAIN_JPY, INIT_SELL_JPY),\n",
+    "                get_trade_unit_amount(status.now_sell_fiat_price, status.sold_unit_amount, status.got_fiat_money, GAINABLE_UNIT_CC_SOLD_JPY, status.used_fiat_money + status.got_fiat_money, INIT_SELL_JPY),\n",
     "                status.bought_unit_amount\n",
     "            )\n",
     "            if trade_unit_amount > 0:\n",
@@ -646,12 +662,12 @@
     "            status.please_sell_unit_amount = status.bought_unit_amount\n",
     "            status.cooling_time = SAD_COOLING_TIME\n",
     "\n",
-    "        if status.bought_average_fiat_price is not None and status.now_sell_fiat_price < status.bought_average_fiat_price - MAX_UNIT_CC_LOSS_JPY and status.get_usage() > 90/100:\n",
+    "        if status.bought_average_fiat_price is not None and status.now_sell_fiat_price < status.bought_average_fiat_price - LOSSABLE_UNIT_CC_SELL_JPY and status.get_usage() > 90/100:\n",
     "            status.sample_number = 0\n",
     "            status.please_sell_unit_amount = status.bought_unit_amount\n",
     "            status.cooling_time = SAD_COOLING_TIME\n",
     "\n",
-    "        if status.bought_unit_amount > 0 and status.now_sell_fiat_price < MIN_UNIT_CC_INIT_TRADE_JPY:\n",
+    "        if status.bought_unit_amount > 0 and status.now_sell_fiat_price < MIN_UNIT_CC_TRADE_JPY:\n",
     "            status.please_sell_unit_amount = status.bought_unit_amount\n",
     "            status.cooling_time = SAD_COOLING_TIME\n",
     "\n",
@@ -660,14 +676,14 @@
     "            bookkeeper.fsh.write(f'{status}\\n')\n",
     "            continue\n",
     "\n",
-    "        if status.used_fiat_money < INIT_BUY_JPY and INIT_BUY_JPY - status.used_fiat_money <= (MAX_TRADED_JPY - status.used_fiat_money) * 0.75 \\\n",
-    "                and status.now_buy_fiat_price > MIN_UNIT_CC_INIT_TRADE_JPY and status.now_buy_fiat_price < MAX_UNIT_CC_INIT_TRADE_JPY:\n",
+    "        if status.used_fiat_money < INIT_BUY_JPY and INIT_BUY_JPY - status.used_fiat_money <= (MAX_BOUGHT_JPY - status.used_fiat_money) * 0.75 \\\n",
+    "                and status.now_buy_fiat_price > MIN_UNIT_CC_TRADE_JPY and status.now_buy_fiat_price < MAX_UNIT_CC_TRADE_JPY:\n",
     "            status.sample_number = 0\n",
     "            status.please_buy_unit_amount = math.ceil((INIT_BUY_JPY - status.used_fiat_money) / status.now_buy_fiat_price / status.trade_unit)\n",
     "\n",
     "        if status.used_fiat_money >= INIT_BUY_JPY and status.bought_average_fiat_price is not None and status.now_buy_fiat_price < status.bought_average_fiat_price:\n",
-    "            trade_unit_amount = get_trade_unit_amount(status.now_buy_fiat_price, status.bought_unit_amount, status.used_fiat_money, TRADABLE_UNIT_CC_LOSS_JPY, INIT_BUY_JPY)\n",
-    "            while trade_unit_amount > 0 and status.now_buy_fiat_price * status.trade_unit * trade_unit_amount > (MAX_TRADED_JPY - status.used_fiat_money) * 0.75:\n",
+    "            trade_unit_amount = get_trade_unit_amount(status.now_buy_fiat_price, status.bought_unit_amount, status.used_fiat_money, LOSSABLE_UNIT_CC_BOUGHT_JPY, MAX_BOUGHT_JPY, INIT_BUY_JPY)\n",
+    "            while trade_unit_amount > 0 and status.now_buy_fiat_price * status.trade_unit * trade_unit_amount > (MAX_BOUGHT_JPY - status.used_fiat_money) * 0.75:\n",
     "                trade_unit_amount >>= 1\n",
     "            if trade_unit_amount > 0:\n",
     "                status.sample_number = 0\n",
@@ -688,7 +704,7 @@
     "\n",
     "        if status.sample_number % NOTIFY_RATE == 0:\n",
     "            send_slack(\n",
-    "                f'{status} => Support level is {MIN_UNIT_CC_INIT_TRADE_JPY} JPY.',\n",
+    "                f'{status} => Support level is {MIN_UNIT_CC_TRADE_JPY} JPY.',\n",
     "                'Power by https://jhub.name/', 'good' if status.get_total_gain_fiat_money() > 0 else 'danger'\n",
     "            )\n",
     "\n",