diff --git a/HDOJ/Multi-University Training Contest/2017/Team 1/1001.cpp b/HDOJ/Multi-University Training Contest/2017/Team 1/1001.cpp
new file mode 100644
index 0000000..3b6ab89
--- /dev/null
+++ b/HDOJ/Multi-University Training Contest/2017/Team 1/1001.cpp	
@@ -0,0 +1,15 @@
+#include <cmath>
+#include <cstdio>
+using namespace std;
+int main()
+{
+    int m;
+    int cc=1;
+    while(scanf("%d",&m)==1)
+    {
+        int k=m*log(2)/log(10);
+        printf("Case #%d: %d\n",cc,k);
+        ++cc;
+    }
+    return 0;
+}