From 6036ce2832c9b06794569a514b2dda92c2ebe056 Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Sat, 9 Jun 2018 19:28:25 +0200
Subject: [PATCH] io: fix Elias gamma code reading

---
 src/io/intcode.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/io/intcode.rs b/src/io/intcode.rs
index 5e35a15..e876772 100644
--- a/src/io/intcode.rs
+++ b/src/io/intcode.rs
@@ -71,11 +71,11 @@ fn read_rice(br: &mut BitReader, k: u8) -> BitReaderResult<u32> {
 }
 
 fn read_gamma(br: &mut BitReader) -> BitReaderResult<u32> {
-    let mut ret = 0;
+    let mut ret = 1;
     while br.read(1)? != 1 {
         ret = (ret << 1) | br.read(1)?;
     }
-    Ok(ret)
+    Ok(ret - 1)
 }
 
 fn read_gammap(br: &mut BitReader) -> BitReaderResult<u32> {
-- 
2.30.2