diff --git a/Luogu/problem/P7885/P7885.cpp b/Luogu/problem/P7885/P7885.cpp
new file mode 100644
index 00000000..3442d17d
--- /dev/null
+++ b/Luogu/problem/P7885/P7885.cpp
@@ -0,0 +1,16 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+long long t, a, b, c, d, x, y, k;
+
+int main() {
+    cin >> t;
+    while (t--) {
+        cin >> a >> b >> c >> d;
+        x = abs(a - c);
+        y = abs(b - d);
+        cout << max(x, y) * 2 - !(x % 2 == 0 && y % 2 == 0 || x % 2 && y % 2) << endl;
+    }
+    return 0;
+}