diff --git a/src/main/java/com/dota/bit/_3133/Solution.java b/src/main/java/com/dota/bit/_3133/Solution.java
new file mode 100644
index 0000000..5c8cab8
--- /dev/null
+++ b/src/main/java/com/dota/bit/_3133/Solution.java
@@ -0,0 +1,19 @@
+package com.dota.bit._3133;
+
+class Solution {
+	public long minEnd(int n, int x) {
+		long res = x;
+		long y = n - 1;
+		long a = 0;
+		while (y != 0) {
+			//找x第一个0
+			while ((x & (1 << a)) != 0) {
+				a++;
+			}
+			res |= (y & 1) << a;
+			y >>= 1;
+			a++;
+		}
+		return res;
+	}
+}
\ No newline at end of file