diff --git a/VE}U52QX)OW~J@X7~HUP5I6.png b/VE}U52QX)OW~J@X7~HUP5I6.png
new file mode 100644
index 0000000..6a45207
Binary files /dev/null and b/VE}U52QX)OW~J@X7~HUP5I6.png differ
diff --git a/superman.py b/superman.py
index 270ac97..d169e87 100644
--- a/superman.py
+++ b/superman.py
@@ -1,24 +1,34 @@
 from decimal import Decimal as De
 
-tick_time, velocity, height = De('0'), De('0'), De('0')
-m = De('4610025')
-gravity = De('9.798')
-R = De('637100')
-n = De('0.5943466')
-H = De('70000')
-F = De('208201000')
+a = False
+if a:
+    tick_time, velocity, height = De('0'), De('0'), De('0')
+    m = De('4610025')
+    gravity = De('9.798')
+    R = De('637100')
+    n = De('0.5943466')
+    H = De('70000')
+    F = De('208201000')
+else:
+    tick_time, velocity, height = 0, 0, 0
+    m = 4610025
+    gravity = 9.798
+    R = 637100
+    n = 0.5943466
+    H = 70000
+    F = 208201000
 TPS = 20
 MSPT = 1 / TPS
 while True:  # 主tick循环
     # 基础加速度运算
-    add_speed = (F / m) - ((gravity * (R ** 2)) / ((R * tick_time * height) ** 2))
+    add_speed = (F / m) - ((gravity * (R ** 2)) / ((R + height) ** 2))
     # 出大气层判定
     if height < 70000:  # 没出大气 加速度需要减去大气阻力
         add_speed -= (n * (velocity ** 2) * (10 * (-6 * height) / H)) / m
-    height += MSPT * velocity  # 高度 加 速度除以TPS（tick per second）（每tick加速）
-    velocity += MSPT * add_speed  # 速度 加 加速度除以TPS
+    height += (MSPT * velocity)  # 高度 加 速度除以TPS（tick per second）（每tick加速）
+    velocity += (add_speed * MSPT)  # 速度 加 加速度除以TPS
     if tick_time < 192:  # 一些我也不知道是什么意思的tick判定
-        m -= (MSPT * F) / 3399.2  # 3399.2是个啥？
+        m -= (F * MSPT) / 3399.2  # 3399.2是个啥？
     elif tick_time < 240:
         m -= 129 * MSPT  # ??? 129?
     else:
@@ -46,4 +56,4 @@ while True:  # 主tick循环
         tick_time += ((12308300 - height) / velocity)
         break
 
-print('t: ' + tick_time)
+print('t: %s' % tick_time)