diff --git a/test/md5compare.nas b/test/md5compare.nas
index 43a0aa8..e0a881c 100644
--- a/test/md5compare.nas
+++ b/test/md5compare.nas
@@ -2,15 +2,32 @@ import("lib.nas");
 import("module/libmd5.nas");
 import("test/md5.nas");
 
-var ch="0123456789abcdef+_*/\'\".,;:<>!@#$%^&*()-=\\|[]{}";
+rand(time(0));
 
-for(var i=1;i<1024;i+=1){
-    var s="";
-    for(var j=0;j<i;j+=1){
-        s~=chr(ch[int(rand()*size(ch))]);
+var compare=func(total){
+    var ch="0123456789abcdef+_*/\'\".,;:<>!@#$%^&*()-=\\|[]{}";
+    var (prt,lastpercent,percent)=("",0,0);
+    for(var i=1;i<=total;i+=1){
+        var s="";
+        for(var j=0;j<i;j+=1){
+            s~=chr(ch[int(rand()*size(ch))]);
+        }
+        if(cmp(md5(s),_md5(s))){
+            die("error: "~str(i));
+        }
+        percent=int(i/total*100);
+        if(percent-lastpercent>=2){
+            prt~="#";
+            lastpercent=percent;
+        }
+        var tmp=prt;
+        for(var spc=size(prt);spc<50;spc+=1)
+            tmp~=" ";
+        print(" |",tmp,"| ",percent,"% (",i,"/",total,")\r");
     }
-    var res=!cmp(md5(s),_md5(s));
-    if(!res){
-        println("error: ",i);
-    }
-}
\ No newline at end of file
+    print('\n');
+}
+
+compare(512);
+compare(1024);
+compare(2048);
\ No newline at end of file