diff --git a/TangDou/AcWing/RongChi/HDU2204_2.cpp b/TangDou/AcWing/RongChi/HDU2204_2.cpp
index 533cb2c..1648749 100644
--- a/TangDou/AcWing/RongChi/HDU2204_2.cpp
+++ b/TangDou/AcWing/RongChi/HDU2204_2.cpp
@@ -3,8 +3,9 @@ using namespace std;
 #define ll long long
 const int N = 100 + 100;
 ll mu[N * 100], prim[N * 100], check[N * 100];
-int tot = 0;
-void getmu() {
+int tot;
+
+void get_mobius() {
     mu[1] = 1;
     for (int i = 2; i < N; i++) {
         if (!check[i]) {
@@ -26,7 +27,7 @@ void getmu() {
     }
 }
 int main() {
-    getmu();
+    get_mobius();
     ll tmp;
     while (cin >> tmp) {
         ll sum = 1;