diff --git a/角谷猜想.py b/角谷猜想.py
new file mode 100644
index 0000000..8190356
--- /dev/null
+++ b/角谷猜想.py
@@ -0,0 +1,13 @@
+def jiaogu(n):
+    if n==1:
+        print("END")
+        return 1
+    if n%2==0:
+        print(n,"/",2,"=",n//2,sep="")
+        jiaogu(n//2)
+    else:
+        print(n, "*", 3, "+",1,"=", n*3+1, sep="")
+        jiaogu(n*3+1)
+
+n=int(input())
+jiaogu(n)
\ No newline at end of file