From dbea5b0a8d385fa636960178c62bcaf28aed87d1 Mon Sep 17 00:00:00 2001
From: hanyixuanten <105723997+hanyixuanten@users.noreply.github.com>
Date: Wed, 15 Jul 2026 16:44:27 +0800
Subject: [PATCH] new file:   P14359.cpp

---
 P14359.cpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 P14359.cpp

diff --git a/P14359.cpp b/P14359.cpp
new file mode 100644
index 0000000..d23f305
--- /dev/null
+++ b/P14359.cpp
@@ -0,0 +1,36 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+const int MAX_N = 5e5 + 5;
+const int MAX_XOR = 2e6 + 5e5 + 5;
+
+int main()
+{
+    int n, k;
+    scanf("%d %d", &n, &k);
+
+    vector<int> a(n + 1), pre(n + 1);
+    for (int i = 1; i <= n; i++)
+    {
+        scanf("%d", &a[i]);
+        pre[i] = pre[i - 1] ^ a[i];
+    }
+
+    vector<int> last_pos(MAX_XOR, -1);
+    last_pos[0] = 0;
+
+    int ans = 0, seg_start = 0;
+    for (int r = 1; r <= n; r++)
+    {
+        int target = pre[r] ^ k;
+        if (last_pos[target] >= seg_start)
+        {
+            ans++;
+            seg_start = r;
+        }
+        last_pos[pre[r]] = r;
+    }
+
+    printf("%d\n", ans);
+    return 0;
+}
\ No newline at end of file