diff --git a/QUSTOJ/1717.c b/QUSTOJ/1717.c
new file mode 100644
index 0000000..ad36c0d
--- /dev/null
+++ b/QUSTOJ/1717.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#define MAXN 256
+int bucket[MAXN];
+
+int main()
+{
+    int t;
+    scanf("%d",&t);
+    int tmp;
+    for(int i=0;i<t;i++)
+    {
+        scanf("%d",&tmp);
+        if(bucket[tmp]==0)
+        {
+            ++bucket[tmp];
+            printf("%d ",tmp);
+        }
+    }
+    printf("\n");
+    return 0;
+}