diff --git a/HDOJ/2084.cpp b/HDOJ/2084.cpp
new file mode 100644
index 0000000..7058695
--- /dev/null
+++ b/HDOJ/2084.cpp
@@ -0,0 +1,62 @@
+#include <iostream>
+#include <string>
+#include <vector>
+#include <queue>
+#include <algorithm>
+
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
+/// This Contest and Compile does not support C++11.
+//#include <thread>
+//#include <mutex>
+//#include <condition_variable>
+//#include <functional>
+
+using namespace std;
+
+int box[105][105];
+int dp[105][105];
+
+int main()
+{
+    int C;
+    cin>>C;
+    while(C--)
+    {
+        int n;
+        cin>>n;
+
+        memset(box,0,sizeof(box));
+        memset(dp,0,sizeof(dp));
+
+        for(int i=0;i<n;i++)
+        {
+            for(int j=0;j<=i;j++)
+            {
+                cin>>box[i][j];
+            }
+        }
+
+        dp[0][0]=box[0][0];
+
+        for(int i=1;i<n;i++)
+        {
+            dp[i][0]=box[i][0]+dp[i-1][0];
+            for(int j=0;j<i;j++)
+            {
+                dp[i][j]=box[i][j]+max(dp[i-1][j-1],dp[i-1][j]);
+            }
+            dp[i][i]=box[i][i]+dp[i-1][i-1];
+        }
+
+        int maxVal=-1;
+        for(int i=0;i<n;i++)
+        {
+            maxVal=max(maxVal,dp[n-1][i]);
+        }
+        cout<<maxVal<<endl;
+    }
+    return 0;
+}