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authorLouis Burda <quent.burda@gmail.com>2023-04-07 17:18:18 -0400
committerLouis Burda <quent.burda@gmail.com>2023-04-07 17:19:39 -0400
commit87ab487d59fa85dbe2afa55cc841b02805ae42ca (patch)
treecd90ab715e1b5b5803674045dbafd6d51d27ac90 /src/05/part2
parent1bcc82c5bfbde87edd03c01ffdf9ee5934681592 (diff)
downloadaoc2018-python-87ab487d59fa85dbe2afa55cc841b02805ae42ca.tar.gz
aoc2018-python-87ab487d59fa85dbe2afa55cc841b02805ae42ca.zip
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+--- Part Two ---
+
+The air conditioner comes online! Its cold air feels good for a while, but then the TEST alarms
+start to go off. Since the air conditioner can't vent its heat anywhere but back into the
+spacecraft, it's actually making the air inside the ship warmer.
+
+Instead, you'll need to use the TEST to extend the thermal radiators. Fortunately, the diagnostic
+program (your puzzle input) is already equipped for this. Unfortunately, your Intcode computer is
+not.
+
+Your computer is only missing a few opcodes:
+
+
+ - Opcode 5 is jump-if-true: if the first parameter is non-zero, it sets the instruction pointer to
+the value from the second parameter. Otherwise, it does nothing.
+
+ - Opcode 6 is jump-if-false: if the first parameter is zero, it sets the instruction pointer to the
+value from the second parameter. Otherwise, it does nothing.
+
+ - Opcode 7 is less than: if the first parameter is less than the second parameter, it stores 1 in
+the position given by the third parameter. Otherwise, it stores 0.
+
+ - Opcode 8 is equals: if the first parameter is equal to the second parameter, it stores 1 in the
+position given by the third parameter. Otherwise, it stores 0.
+
+
+Like all instructions, these instructions need to support parameter modes as described above.
+
+Normally, after an instruction is finished, the instruction pointer increases by the number of
+values in that instruction. However, if the instruction modifies the instruction pointer, that value
+is used and the instruction pointer is not automatically increased.
+
+For example, here are several programs that take one input, compare it to the value 8, and then
+produce one output:
+
+
+ - 3,9,8,9,10,9,4,9,99,-1,8 - Using position mode, consider whether the input is equal to 8; output
+1 (if it is) or 0 (if it is not).
+
+ - 3,9,7,9,10,9,4,9,99,-1,8 - Using position mode, consider whether the input is less than 8; output
+1 (if it is) or 0 (if it is not).
+
+ - 3,3,1108,-1,8,3,4,3,99 - Using immediate mode, consider whether the input is equal to 8; output 1
+(if it is) or 0 (if it is not).
+
+ - 3,3,1107,-1,8,3,4,3,99 - Using immediate mode, consider whether the input is less than 8; output
+1 (if it is) or 0 (if it is not).
+
+
+Here are some jump tests that take an input, then output 0 if the input was zero or 1 if the input
+was non-zero:
+
+
+ - 3,12,6,12,15,1,13,14,13,4,13,99,-1,0,1,9 (using position mode)
+
+ - 3,3,1105,-1,9,1101,0,0,12,4,12,99,1 (using immediate mode)
+
+
+Here's a larger example:
+
+3,21,1008,21,8,20,1005,20,22,107,8,21,20,1006,20,31,
+1106,0,36,98,0,0,1002,21,125,20,4,20,1105,1,46,104,
+999,1105,1,46,1101,1000,1,20,4,20,1105,1,46,98,99
+
+The above example program uses an input instruction to ask for a single number. The program will
+then output 999 if the input value is below 8, output 1000 if the input value is equal to 8, or
+output 1001 if the input value is greater than 8.
+
+This time, when the TEST diagnostic program runs its input instruction to get the ID of the system
+to test, provide it 5, the ID for the ship's thermal radiator controller. This diagnostic test suite
+only outputs one number, the diagnostic code.
+
+What is the diagnostic code for system ID 5?
+
+