diff --git a/cprnummer.py b/cprnummer.py
new file mode 100644
index 0000000..017a053
--- /dev/null
+++ b/cprnummer.py
@@ -0,0 +1,14 @@
+cpr = list(map(int, input().strip().replace("-", "")))
+valid = (
+    cpr[0] * 4
+    + cpr[1] * 3
+    + cpr[2] * 2
+    + cpr[3] * 7
+    + cpr[4] * 6
+    + cpr[5] * 5
+    + cpr[6] * 4
+    + cpr[7] * 3
+    + cpr[8] * 2
+    + cpr[9] * 1
+) % 11 == 0
+print(1 if valid else 0)