diff --git a/Luogu/P1055/P1055.cpp b/Luogu/P1055/P1055.cpp
new file mode 100644
index 00000000..73f0e3e2
--- /dev/null
+++ b/Luogu/P1055/P1055.cpp
@@ -0,0 +1,24 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+const char mod[] = "0123456789X";
+
+int t;
+string s;
+
+int main() {
+    cin >> s;
+    for (int i = 0, j = 0; i < 12; i++) {
+        if (s[i] != '-') {
+            t += (s[i] - '0') * ++j;
+        }
+    }
+    if (s[12] != mod[t % 11]) {
+        s[12] = mod[t % 11];
+        cout << s << endl;
+    } else {
+        cout << "Right" << endl;
+    }
+    return 0;
+}