From 6f5e848c091d0be417335b43e18f0683d2c80f98 Mon Sep 17 00:00:00 2001
From: foosinn <foosinn@f2o.io>
Date: Wed, 27 May 2020 14:11:56 +0200
Subject: [PATCH] proper intcode program resize

---
 src/intcode.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/src/intcode.rs b/src/intcode.rs
index b1b96e8..1236bf0 100644
--- a/src/intcode.rs
+++ b/src/intcode.rs
@@ -319,9 +319,8 @@ impl Computer {
             Mode::Immediate => want,
             Mode::Relative => (self.rel + self.get_pos(want)) as usize,
         };
-        if length < want {
-            let missing = (want - length) + 10000;
-            self.program.extend_from_slice(&vec![0; missing])
+        if length <= want {
+            self.program.resize(want + 1, 0);
         }
         self.program[want] = value;
     }