From e12436c99bb04897d6344b6351d0336e4c627573 Mon Sep 17 00:00:00 2001
From: Leah Neukirchen <leah@vuxu.org>
Date: Thu, 28 Nov 2019 17:38:10 +0100
Subject: add rest

---
 day19.rb | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100644 day19.rb

(limited to 'day19.rb')

diff --git a/day19.rb b/day19.rb
new file mode 100644
index 0000000..ec3e2ff
--- /dev/null
+++ b/day19.rb
@@ -0,0 +1,86 @@
+insn = [:eqri, :seti, :eqir, :eqrr, :addi, :setr, :gtrr, :gtir, :muli, :bori, :bani, :borr, :gtri, :banr, :addr, :mulr]
+
+def op(cmd, regs)
+  regs2 = regs.dup
+
+  case cmd[0]
+  when :addr; regs2[cmd[3]] = regs[cmd[1]] + regs[cmd[2]]
+  when :addi; regs2[cmd[3]] = regs[cmd[1]] + cmd[2]
+  when :mulr; regs2[cmd[3]] = regs[cmd[1]] * regs[cmd[2]]
+  when :muli; regs2[cmd[3]] = regs[cmd[1]] * cmd[2]
+  when :banr; regs2[cmd[3]] = regs[cmd[1]] & regs[cmd[2]]
+  when :bani; regs2[cmd[3]] = regs[cmd[1]] & cmd[2]
+  when :borr; regs2[cmd[3]] = regs[cmd[1]] | regs[cmd[2]]
+  when :bori; regs2[cmd[3]] = regs[cmd[1]] | cmd[2]
+  when :setr; regs2[cmd[3]] = regs[cmd[1]]
+  when :seti; regs2[cmd[3]] = cmd[1]
+  when :gtir; regs2[cmd[3]] = cmd[1] > regs[cmd[2]] ? 1 : 0
+  when :gtri; regs2[cmd[3]] = regs[cmd[1]] > cmd[2] ? 1 : 0
+  when :gtrr; regs2[cmd[3]] = regs[cmd[1]] > regs[cmd[2]] ? 1 : 0
+  when :eqri; regs2[cmd[3]] = regs[cmd[1]] == cmd[2] ? 1 : 0
+  when :eqir; regs2[cmd[3]] = cmd[1] == regs[cmd[2]] ? 1 : 0
+  when :eqrr; regs2[cmd[3]] = regs[cmd[1]] == regs[cmd[2]] ? 1 : 0
+  end
+
+  regs2
+end
+
+
+r0 = 0
+r3=10551348
+
+f = [1,
+ 2,
+ 3,
+ 4,
+ 6,
+ 9,
+ 12,
+ 18,
+ 36,
+ 293093,
+ 586186,
+ 879279,
+ 1172372,
+ 1758558,
+ 2637837,
+ 3517116,
+ 5275674,
+ 10551348]
+
+f.each { |r1|
+  f.each { |r5|
+    if r1*r5 == r3
+      r0 += r1
+    end
+  }
+}
+
+p r0
+
+
+rip, *program = File.readlines("day19")
+
+rip = rip.scan(/\d/)[0].to_i
+
+program.map! { |line|
+  o,a,b,c = line.split
+  [o.to_sym, a.to_i, b.to_i, c.to_i]
+}
+
+regs = [0]*6
+regs[0] = 1
+ip = 0
+
+loop {
+  break  if ip < 0 || ip > program.size
+
+  regs[rip] = ip
+  p regs
+  regs = op(program[ip], regs)
+  ip = regs[rip] + 1
+}
+
+p regs.first  # 2240
+
+# 10844452 too low
-- 
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