Puzzle du 17 décembre 2017

2017/17/spinhole.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+import sys
+steps = int(sys.argv[1])
+buff, pos = [0], 0
+for i in range(1, 2018):
+    pos = (pos + steps) % len(buff) + 1
+    buff.insert(pos, i)
+print(buff[buff.index(2017) + 1])
+buff, pos = [], 0
+for i in range(1, 50000001):
+    pos = (pos + steps) % i + 1
+    if pos == 1:
+        buff.append(i)
+print(buff[-1])