diff --git a/QUSTOJ/1231.cpp b/QUSTOJ/1231.cpp
new file mode 100644
index 0000000..4fb267c
--- /dev/null
+++ b/QUSTOJ/1231.cpp
@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+char buff[128];
+void deal()
+{
+    int dec,binary;
+    scanf("%d %d",&dec,&binary);
+    int orgdec=dec;
+    memset(buff,0,128);
+    int i=0;
+    while(dec>=binary)
+    {
+        buff[i++]='0'+dec%binary;
+        dec=dec/binary;
+    }
+    buff[i]='0'+dec;
+    int len=strlen(buff);
+    int slen=len/2;
+#ifndef __GNUC__
+    printf("%s\n",buff);
+#endif
+    for(i=0;i<slen;i++)
+    {
+        if(buff[i]!=buff[len-i-1])
+        {
+            printf("Number %d is not palindrome in basis %d\n",orgdec,binary);
+            return;
+        }
+    }
+    printf("Number %d is palindrome in basis %d\n",orgdec,binary);
+}
+int main()
+{
+    int all;
+    scanf("%d",&all);
+    for(;all>0;all--)
+    {
+        deal();
+    }
+    return 0;
+}