diff --git a/LuoGu/2415_doctor_godder.cpp b/LuoGu/2415_doctor_godder.cpp
new file mode 100644
index 0000000..489d978
--- /dev/null
+++ b/LuoGu/2415_doctor_godder.cpp
@@ -0,0 +1,22 @@
+#include<cstdio>  
+#include<iostream>  
+#include<math.h>  
+using namespace std;  
+double sum=0,sum1=0;  
+int a[1100],num=0;  
+int main()  
+{  
+    while (cin>>a[++num])  
+    {  
+        /*for (int i=1;i<=num-1;++i) 
+        if (a[i]==a[num]) 
+        { 
+            --num; 
+            break; 
+        }*/  
+    }  
+    --num;  
+    for (int i=1;i<=num;++i) sum1+=a[i];  
+    printf("%0.0lf",sum1*pow(2,num-1));  
+    return 0;  
+}