init 2019 day 7 with day 5 source, typo in day 6

2019/day07/README.org

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+** --- Day 7: Amplification Circuit ---
+Based on the navigational maps, you're going to need to send more power
+to your ship's thrusters to reach Santa in time. To do this, you'll need
+to configure a series of
+[[https://en.wikipedia.org/wiki/Amplifier][amplifiers]] already
+installed on the ship.
+
+There are five amplifiers connected in series; each one receives an
+input signal and produces an output signal. They are connected such that
+the first amplifier's output leads to the second amplifier's input, the
+second amplifier's output leads to the third amplifier's input, and so
+on. The first amplifier's input value is =0=, and the last amplifier's
+output leads to your ship's thrusters.
+
+#+BEGIN_EXAMPLE
+      O-------O  O-------O  O-------O  O-------O  O-------O
+  0 ->| Amp A |->| Amp B |->| Amp C |->| Amp D |->| Amp E |-> (to thrusters)
+      O-------O  O-------O  O-------O  O-------O  O-------O
+#+END_EXAMPLE
+
+The Elves have sent you some /Amplifier Controller Software/ (your
+puzzle input), a program that should run on your [[file:5][existing
+Intcode computer]]. Each amplifier will need to run a copy of the
+program.
+
+When a copy of the program starts running on an amplifier, it will first
+use an input instruction to ask the amplifier for its current /phase
+setting/ (an integer from =0= to =4=). Each phase setting is used
+/exactly once/, but the Elves can't remember which amplifier needs which
+phase setting.
+
+The program will then call another input instruction to get the
+amplifier's input signal, compute the correct output signal, and supply
+it back to the amplifier with an output instruction. (If the amplifier
+has not yet received an input signal, it waits until one arrives.)
+
+Your job is to /find the largest output signal that can be sent to the
+thrusters/ by trying every possible combination of phase settings on the
+amplifiers. Make sure that memory is not shared or reused between copies
+of the program.
+
+For example, suppose you want to try the phase setting sequence
+=3,1,2,4,0=, which would mean setting amplifier =A= to phase setting
+=3=, amplifier =B= to setting =1=, =C= to =2=, =D= to =4=, and =E= to
+=0=. Then, you could determine the output signal that gets sent from
+amplifier =E= to the thrusters with the following steps:
+
+- Start the copy of the amplifier controller software that will run on
+  amplifier =A=. At its first input instruction, provide it the
+  amplifier's phase setting, =3=. At its second input instruction,
+  provide it the input signal, =0=. After some calculations, it will use
+  an output instruction to indicate the amplifier's output signal.
+- Start the software for amplifier =B=. Provide it the phase setting
+  (=1=) and then whatever output signal was produced from amplifier =A=.
+  It will then produce a new output signal destined for amplifier =C=.
+- Start the software for amplifier =C=, provide the phase setting (=2=)
+  and the value from amplifier =B=, then collect its output signal.
+- Run amplifier =D='s software, provide the phase setting (=4=) and
+  input value, and collect its output signal.
+- Run amplifier =E='s software, provide the phase setting (=0=) and
+  input value, and collect its output signal.
+
+The final output signal from amplifier =E= would be sent to the
+thrusters. However, this phase setting sequence may not have been the
+best one; another sequence might have sent a higher signal to the
+thrusters.
+
+Here are some example programs:
+
+- Max thruster signal /=43210=/ (from phase setting sequence
+  =4,3,2,1,0=):
+
+  #+BEGIN_EXAMPLE
+    3,15,3,16,1002,16,10,16,1,16,15,15,4,15,99,0,0
+  #+END_EXAMPLE
+
+- Max thruster signal /=54321=/ (from phase setting sequence
+  =0,1,2,3,4=):
+
+  #+BEGIN_EXAMPLE
+    3,23,3,24,1002,24,10,24,1002,23,-1,23,
+    101,5,23,23,1,24,23,23,4,23,99,0,0
+  #+END_EXAMPLE
+
+- Max thruster signal /=65210=/ (from phase setting sequence
+  =1,0,4,3,2=):
+
+  #+BEGIN_EXAMPLE
+    3,31,3,32,1002,32,10,32,1001,31,-2,31,1007,31,0,33,
+    1002,33,7,33,1,33,31,31,1,32,31,31,4,31,99,0,0,0
+  #+END_EXAMPLE
+
+Try every combination of phase settings on the amplifiers. /What is the
+highest signal that can be sent to the thrusters?/
+
+To begin, [[file:7/input][get your puzzle input]].
+
+Answer:
+
+You can also [Shareon
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