diff --git a/UVA/11488_zhouworld16.cpp b/UVA/11488_zhouworld16.cpp
new file mode 100644
index 0000000..52b586d
--- /dev/null
+++ b/UVA/11488_zhouworld16.cpp
@@ -0,0 +1,46 @@
+#include <iostream>
+#include <cstring>
+#include <string>
+#include <cstdio>
+using namespace std;
+
+const int maxn=500000;
+int tree[maxn][2];
+int val[maxn],cnt;
+int n,ans;
+
+void insert(string st){
+    int s=0;
+    for(int i=0;i<st.length();i++){
+        if( tree[s][st[i]-'0']==0 ) tree[s][st[i]-'0']=++cnt;
+        s=tree[s][st[i]-'0'];
+        val[s]++;
+        if((i+1)*val[s]>ans) ans=(i+1)*val[s];
+    }
+}
+
+void initial(){
+    cnt=ans=0;
+    memset(val,0,sizeof(val));
+    memset(tree,0,sizeof(tree));
+}
+
+void solve(){
+    cin>>n;
+    for(int i=0;i<n;i++){
+        string st;
+        cin>>st;
+        insert(st);
+    }
+    cout<<ans<<endl;
+}
+
+int main(){
+    int t;
+    cin>>t;
+    while(t-- >0){
+        initial();
+        solve();
+    }
+    return 0;
+}