diff --git a/bfi-rust/bf.b b/bfi-rust/bf.b
index b695ab4..d9cce41 100644
--- a/bfi-rust/bf.b
+++ b/bfi-rust/bf.b
@@ -1,11 +1,163 @@
-++++++++++[>++++++++++<-]>>++++++++++>->>>>>>>>>>>>>>>>-->+++++++[->++
-++++++++<]>[->+>+>+>+<<<<]+++>>+++>>>++++++++[-<++++<++++<++++>>>]++++
-+[-<++++<++++>>]>>-->++++++[->+++++++++++<]>[->+>+>+>+<<<<]+++++>>+>++
-++++>++++++>++++++++[-<++++<++++<++++>>>]++++++[-<+++<+++<+++>>>]>>-->
----+[-<+]-<[+[->+]-<<->>>+>[-]++[-->++]-->+++[---++[--<++]---->>-<+>[+
-+++[----<++++]--[>]++[-->++]--<]>++[--+[-<+]->>[-]+++++[---->++++]-->[
-->+<]>>[.>]++[-->++]]-->+++]---+[-<+]->>-[+>>>+[-<+]->>>++++++++++<<[-
->+>-[>+>>]>[+[-<+>]>+>>]<<<<<<]>>[-]>>>++++++++++<[->-[>+>>]>[+[-<+>]>
-+>>]<<<<<]>[-]>>[>++++++[-<++++++++>]<.<<+>+>[-]]<[<[->-<]++++++[->+++
-+++++<]>.[-]]<<++++++[-<++++++++>]<.[-]<<[-<+>]+[-<+]->>]+[-]<<<.>>>+[
--<+]-<<]
\ No newline at end of file
+* factor an arbitrarily large positive integer
+*
+* Copyright (C) 1999 by Brian Raiter
+* under the GNU General Public License
+>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>-
+*
+* read in the number
+*
+<<<<<<<<<+
+[-[>>>>>>>>>>][-]<<<<<<<<<<[[->>>>>>>>>>+<<<<<<<<<<]<<<<<<<<<<]
+  >>>>>>>>>>,----------]
+>>>>>>>>>>[------------------------------------->>>>>>>>>->]
+<[+>[>>>>>>>>>+>]<-<<<<<<<<<<]-
+*
+* display the number and initialize the loop variable to two
+*
+[>++++++++++++++++++++++++++++++++++++++++++++++++.
+  ------------------------------------------------<<<<<<<<<<<]
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++.
+--------------------------.[-]
+>>>>>>>>>>>>++<<<<+
+*
+* the main loop
+*
+[ [-]>>
+  *
+  * make copies of the number and the loop variable
+  *
+  [>>>>[-]>[-]>[-]>[-]
+    >[-]>[-]
+    <<<<<<<[->>>+>+<<<<]>>>>>>>>]
+  <<<<<<<<<<[>>>>>>[-<<<<+>>>>]<<<<<<<<<<<<<<<<]>>>>>>>>>>
+  [>[->>>+>>+<<<<<]>>>>>>>>>]
+  <<<<<<<<<<[>>>>>>[-<<<<<+>>>>>]<<<<<<<<<<<<<<<<]>>>>>>>>>>
+  *
+  * divide the number by the loop variable
+  *
+  [>>>[-]>>>[-]>[-]>>>]                                  initialize
+  <<<<<<<<<<[<<<<<<<<<<]
+  >>>>>>>>>[-]>>>>>>>+<<<<<<<<[+]+
+  [ ->>                               double divisor until above dividend
+    [>>>>>>[->++<]>>>>]<<<<<<<<<<
+    [>>>>>>>>[-]>[-]
+       <<<<[->>>++<<<]<<<<<<<<<<<<<<<]>>>>>>>>>>
+    [>>>>>>>>[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<
+            [->--------->>>>>>>>>+<<<<<<<<<<[->+<]]]]]]]]]]]>>]
+    <<<<<<<<<<[>>>>>>>>>[-<+<<<+>>>>]<<<<<<<<<<<<<<<<<<<]>>>>>>>>>>
+    [>>>>>>>[-<+>[-<+>[-<+>[-<+>[-<+>[-<+>[-<+>[-<+>[-<+>
+            [-<--------->>>>>>>>>>>+<<<<<<<<<<[-<+>]]]]]]]]]]]>>>]
+    <<<<<<<<<<
+    [>>>>[->>>+>>+<<<<<]<<<<<<<<<<<<<<]
+    >>>>>>>>>>[>>>>>>>[-<<<+>>>]>>>]<<<<<<<<<<
+    [>>>>>>>>[->-<]>
+      [<<<<<<<<<[<[-]>>>>>>>>>>[-<<<<<<<<<<+>>>>>>>>>>]<<<<<<<<<<<<<<<<<<<]
+        >>>>>>>>>>>>>>>>>>>]
+      <<<<<<<<<<<<<<<<<<<]
+    >>>>>>>>>[+[+[+[+[+[+[+[+[+[+[[-]<+>]]]]]]]]]]]<
+  ]
+  >>>>>>>>
+  [                                   subtract divisor from dividend
+    <<<<<<
+    [>>>>>>>>[-]>[-]<<<<<[->>>+>+<<<<]>>>>>>]<<<<<<<<<<
+    [>>>>>>>>[-<<<<+>>>>]<<<[->>>+>+<<<<]<<<<<<<<<<<<<<<]>>>>>>>>>>
+    [>>>>>>>>>[-<<<<+>>>>]>]<<<<<<<<<<
+    [>>>>>>>>[-<->]<<<<<<<<<<<<<<<<<<]>>>>>>>>>>
+    [>>>>>>>[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<[->+<
+            [++++++++++[+>-<]>>>>>>>>>>-<<<<<<<<<<]]]]]]]]]]]>>>]
+    >>>>>>>+
+    [                                 if difference is nonnegative then
+      [-]<<<<<<<<<<<<<<<<<            replace dividend and increment quotient
+      [>>>>[-]>>>>[-<<<<+>>>>]<<[->>+<<]<<<<<<<<<<<<<<<<]>>>>>>>>>>
+      [>>>>>>>>[->+<<<+>>]>>]<<<<<<<<<<
+      [>>>[->>>>>>+<<<<<<]<<<<<<<<<<<<<]>>>>>>>>>>
+      [>>>>>>>>>[-<<<<<<+>>>>>>[-<<<<<<+>>>>>>
+                [-<<<<<<+>>>>>>[-<<<<<<+>>>>>>
+                [-<<<<<<+>>>>>>[-<<<<<<+>>>>>>
+                [-<<<<<<+>>>>>>[-<<<<<<+>>>>>>
+                [-<<<<<<+>>>>>>[-<<<<<<--------->>>>>>>>>>>>>>>>+<<<<<<<<<<
+                [-<<<<<<+>>>>>>]]]]]]]]]]]>]
+      >>>>>>>
+    ]                                 halve divisor and loop until zero
+    <<<<<<<<<<<<<<<<<[<<<<<<<<<<]>>>>>>>>>>
+    [>>>>>>>>[-]<<[->+<]<[->>>+<<<]>>>>>]<<<<<<<<<<
+    [+>>>>>>>[-<<<<<<<+>>>>>>>[-<<<<<<<->>>>>>+>
+             [-<<<<<<<+>>>>>>>[-<<<<<<<->>>>>>+>
+             [-<<<<<<<+>>>>>>>[-<<<<<<<->>>>>>+>
+             [-<<<<<<<+>>>>>>>[-<<<<<<<->>>>>>+>
+             [-<<<<<<<+>>>>>>>]]]]]]]]]<<<<<<<
+             [->>>>>>>+<<<<<<<]-<<<<<<<<<<]
+    >>>>>>>
+    [-<<<<<<<<<<<+>>>>>>>>>>>]
+      >>>[>>>>>>>[-<<<<<<<<<<<+++++>>>>>>>>>>>]>>>]<<<<<<<<<<
+    [+>>>>>>>>[-<<<<<<<<+>>>>>>>>[-<<<<<<<<->>>>>+>>>
+              [-<<<<<<<<+>>>>>>>>[-<<<<<<<<->>>>>+>>>
+              [-<<<<<<<<+>>>>>>>>[-<<<<<<<<->>>>>+>>>
+              [-<<<<<<<<+>>>>>>>>[-<<<<<<<<->>>>>+>>>
+              [-<<<<<<<<+>>>>>>>>]]]]]]]]]<<<<<<<<
+              [->>>>>>>>+<<<<<<<<]-<<<<<<<<<<]
+    >>>>>>>>[-<<<<<<<<<<<<<+>>>>>>>>>>>>>]>>
+    [>>>>>>>>[-<<<<<<<<<<<<<+++++>>>>>>>>>>>>>]>>]<<<<<<<<<<
+    [<<<<<<<<<<]>>>>>>>>>>
+    >>>>>>
+  ]
+  <<<<<<
+  *
+  * make copies of the loop variable and the quotient
+  *
+  [>>>[->>>>+>+<<<<<]>>>>>>>]
+  <<<<<<<<<<
+  [>>>>>>>[-<<<<+>>>>]<<<<<[->>>>>+>>+<<<<<<<]<<<<<<<<<<<<]
+  >>>>>>>>>>[>>>>>>>[-<<<<<+>>>>>]>>>]<<<<<<<<<<
+  *
+  * break out of the loop if the quotient is larger than the loop variable
+  *
+  [>>>>>>>>>[-<->]<
+    [<<<<<<<<
+      [<<[-]>>>>>>>>>>[-<<<<<<<<<<+>>>>>>>>>>]<<<<<<<<<<<<<<<<<<]
+    >>>>>>>>>>>>>>>>>>]<<<<<<<<<<<<<<<<<<]
+  >>>>>>>>[>-<[+[+[+[+[+[+[+[+[+[[-]>+<]]]]]]]]]]]>+
+  [ [-]
+    *
+    * partially increment the loop variable
+    *
+    <[-]+>>>>+>>>>>>>>[>>>>>>>>>>]<<<<<<<<<<
+    *
+    * examine the remainder for nonzero digits
+    *
+    [<<<<<<[<<<<[<<<<<<<<<<]>>>>+<<<<<<<<<<]<<<<]
+    >>>>>>>>>>>>>>>>>>>>[>>>>>>>>>>]<<<<<<<<<<[<<<<<<<<<<]
+    >>>>-
+    [ [+]
+      *
+      * decrement the loop variable and replace the number with the quotient
+      *
+      >>>>>>>>-<<[>[-]>>[-<<+>>]>>>>>>>]<<<<<<<<<<
+      *
+      * display the loop variable
+      *
+      [+>>[>>>>>>>>+>>]<<-<<<<<<<<<<]-
+      [>>++++++++++++++++++++++++++++++++++++++++++++++++.
+         ------------------------------------------------<<<<<<<<<<<<]
+      ++++++++++++++++++++++++++++++++.[-]>>>>
+    ]
+    *
+    * normalize the loop variable
+    *
+    >>>>>>
+    [>>[->>>>>+<<<<<[->>>>>+<<<<<
+       [->>>>>+<<<<<[->>>>>+<<<<<
+       [->>>>>+<<<<<[->>>>>+<<<<<
+       [->>>>>+<<<<<[->>>>>+<<<<<
+       [->>>>>+<<<<<[->>>>>--------->>>>>+<<<<<<<<<<
+       [->>>>>+<<<<<]]]]]]]]]]]>>>>>>>>]
+    <<<<<<<<<<[>>>>>>>[-<<<<<+>>>>>]<<<<<<<<<<<<<<<<<]
+    >>>>>>>>>
+  ]<
+]>>
+*
+* display the number and end
+*
+[>>>>>>>>>>]<<<<<<<<<<[+>[>>>>>>>>>+>]<-<<<<<<<<<<]-
+[>++++++++++++++++++++++++++++++++++++++++++++++++.<<<<<<<<<<<]
+++++++++++.
\ No newline at end of file
diff --git a/bfi-rust/src/main.rs b/bfi-rust/src/main.rs
index 18b8fa6..bfe1a5d 100644
--- a/bfi-rust/src/main.rs
+++ b/bfi-rust/src/main.rs
@@ -18,13 +18,8 @@ fn main() {
 fn run(path: String) {
     println!("Path: {}", path);
     let program = fs::read_to_string(path).unwrap();
-    let program = minify(program);
-    println!("{}", program);
-
     let start = SystemTime::now();
-
     let out = o1::run(&*program);
-
     println!("{}\nFinished execution in {}ms", out, start.elapsed().unwrap().as_millis());
 }
 
@@ -35,7 +30,7 @@ fn run(path: String) {
 /// most importantly: loop jumps should be immediate
 ///
 mod o1 {
-    use std::io::{stdin, Read};
+    use std::io::{stdin, Read, stdout, Write};
 
     const MEM_SIZE: usize = 0xFFFF;