diff --git a/boj/1439.py b/boj/1439.py
new file mode 100644
index 0000000..25568e0
--- /dev/null
+++ b/boj/1439.py
@@ -0,0 +1,12 @@
+s=input()
+
+count=0
+last=s[0]
+for i in range(1,len(s)):
+    if not s[i]==last:
+        count+=1
+        last=s[i]
+if count%2==1:
+    print(count//2+1)
+else:
+    print(count//2)