From bf16b19b1f6deffd1983efca059db576f3b60ee5 Mon Sep 17 00:00:00 2001
From: Yigit Sever
Date: Mon, 13 Dec 2021 10:40:39 +0300
Subject: 2019, tracking

---
 2019/day1/rec_fuel.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 2019/day1/rec_fuel.py

(limited to '2019/day1/rec_fuel.py')

diff --git a/2019/day1/rec_fuel.py b/2019/day1/rec_fuel.py
new file mode 100644
index 0000000..d837202
--- /dev/null
+++ b/2019/day1/rec_fuel.py
@@ -0,0 +1,23 @@
+import sys
+
+
+def recfuel(mass):
+    """Calculate the fuel required for the module
+    use the new weight of the fuel recursively
+    r(M) = r(M / 3 - 2)
+    """
+    M = mass // 3 - 2
+
+    if M < 0:
+        return 0
+    else:
+        return M + recfuel(M)
+
+
+total = 0
+
+for mass in sys.stdin:
+    ret = recfuel(int(mass))
+    total += ret
+
+print(total)
-- 
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