Create 2553.cpp

HDOJ/2553.cpp

@@ -0,0 +1,24 @@
+#include <cstdio>
+using namespace std;
+int main()
+{
+    int n;
+    int ans;
+    while(scanf("%d",&n)==1&&n!=0)
+    {
+        switch(n)
+        {
+            case 1:ans=1;break;
+            case 2:case 3:ans=0;break;
+            case 4:ans=2;break;
+            case 5:ans=10;break;
+            case 6:ans=4;break;
+            case 7:ans=40;break;
+            case 8:ans=92;break;
+            case 9:ans=352;break;
+            case 10:ans=724;break;
+        }
+        printf("%d\n",ans);
+    }
+    return 0;
+}