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2018 Day 24 Done

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Brian Buller
2019-11-08 12:40:42 -06:00
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@@ -72,143 +72,242 @@ Advent of Code
For example, consider the following armies:
Immune System:
17 units each with 5390 hit points (weak to radiation, bludgeoning) with
an attack that does 4507 fire damage at initiative 2
989 units each with 1274 hit points (immune to fire; weak to bludgeoning,
slashing) with an attack that does 25 slashing damage at initiative 3
Immune System: 17 units each with 5390 hit points (weak to radiation,
bludgeoning) with an attack that does 4507 fire damage at initiative 2 989
units each with 1274 hit points (immune to fire; weak to bludgeoning,
slashing) with an attack that does 25 slashing damage at initiative 3
Infection:
801 units each with 4706 hit points (weak to radiation) with an attack
that does 116 bludgeoning damage at initiative 1
4485 units each with 2961 hit points (immune to radiation; weak to fire,
cold) with an attack that does 12 slashing damage at initiative 4
Infection: 801 units each with 4706 hit points (weak to radiation) with an
attack that does 116 bludgeoning damage at initiative 1 4485 units each with
2961 hit points (immune to radiation; weak to fire, cold) with an attack that
does 12 slashing damage at initiative 4
If these armies were to enter combat, the following fights, including details during the target selection and attacking phases, would take place:
If these armies were to enter combat, the following fights, including
details during the target selection and attacking phases, would take place:
Immune System:
Group 1 contains 17 units
Group 2 contains 989 units
Infection:
Group 1 contains 801 units
Group 2 contains 4485 units
Immune System: Group 1 contains 17 units Group 2 contains 989 units Infection:
Group 1 contains 801 units Group 2 contains 4485 units
Infection group 1 would deal defending group 1 185832 damage
Infection group 1 would deal defending group 2 185832 damage
Infection group 2 would deal defending group 2 107640 damage
Immune System group 1 would deal defending group 1 76619 damage
Immune System group 1 would deal defending group 2 153238 damage
Immune System group 2 would deal defending group 1 24725 damage
Infection group 1 would deal defending group 1 185832 damage Infection group 1
would deal defending group 2 185832 damage Infection group 2 would deal
defending group 2 107640 damage Immune System group 1 would deal defending
group 1 76619 damage Immune System group 1 would deal defending group 2 153238
damage Immune System group 2 would deal defending group 1 24725 damage
Infection group 2 attacks defending group 2, killing 84 units
Immune System group 2 attacks defending group 1, killing 4 units
Immune System group 1 attacks defending group 2, killing 51 units
Infection group 1 attacks defending group 1, killing 17 units
Infection group 2 attacks defending group 2, killing 84 units Immune System
group 2 attacks defending group 1, killing 4 units Immune System group 1
attacks defending group 2, killing 51 units Infection group 1 attacks
defending group 1, killing 17 units
Immune System:
Group 2 contains 905 units
Infection:
Group 1 contains 797 units
Immune System: Group 2 contains 905 units Infection: Group 1 contains 797
units Group 2 contains 4434 units
Infection group 1 would deal defending group 2 184904 damage Immune System
group 2 would deal defending group 1 22625 damage Immune System group 2 would
deal defending group 2 22625 damage
Immune System group 2 attacks defending group 1, killing 4 units Infection
group 1 attacks defending group 2, killing 144 units
Immune System: Group 2 contains 761 units Infection: Group 1 contains 793
units Group 2 contains 4434 units
Infection group 1 would deal defending group 2 183976 damage Immune System
group 2 would deal defending group 1 19025 damage Immune System group 2 would
deal defending group 2 19025 damage
Immune System group 2 attacks defending group 1, killing 4 units Infection
group 1 attacks defending group 2, killing 143 units
Immune System: Group 2 contains 618 units Infection: Group 1 contains 789
units Group 2 contains 4434 units
Infection group 1 would deal defending group 2 183048 damage Immune System
group 2 would deal defending group 1 15450 damage Immune System group 2 would
deal defending group 2 15450 damage
Immune System group 2 attacks defending group 1, killing 3 units Infection
group 1 attacks defending group 2, killing 143 units
Immune System: Group 2 contains 475 units Infection: Group 1 contains 786
units Group 2 contains 4434 units
Infection group 1 would deal defending group 2 182352 damage Immune System
group 2 would deal defending group 1 11875 damage Immune System group 2 would
deal defending group 2 11875 damage
Immune System group 2 attacks defending group 1, killing 2 units Infection
group 1 attacks defending group 2, killing 142 units
Immune System: Group 2 contains 333 units Infection: Group 1 contains 784
units Group 2 contains 4434 units
Infection group 1 would deal defending group 2 181888 damage Immune System
group 2 would deal defending group 1 8325 damage Immune System group 2 would
deal defending group 2 8325 damage
Immune System group 2 attacks defending group 1, killing 1 unit Infection
group 1 attacks defending group 2, killing 142 units
Immune System: Group 2 contains 191 units Infection: Group 1 contains 783
units Group 2 contains 4434 units
Infection group 1 would deal defending group 2 181656 damage Immune System
group 2 would deal defending group 1 4775 damage Immune System group 2 would
deal defending group 2 4775 damage
Immune System group 2 attacks defending group 1, killing 1 unit Infection
group 1 attacks defending group 2, killing 142 units
Immune System: Group 2 contains 49 units Infection: Group 1 contains 782 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 184904 damage
Immune System group 2 would deal defending group 1 22625 damage
Immune System group 2 would deal defending group 2 22625 damage
Infection group 1 would deal defending group 2 181424 damage Immune System
group 2 would deal defending group 1 1225 damage Immune System group 2 would
deal defending group 2 1225 damage
Immune System group 2 attacks defending group 1, killing 4 units
Infection group 1 attacks defending group 2, killing 144 units
Immune System group 2 attacks defending group 1, killing 0 units Infection
group 1 attacks defending group 2, killing 49 units
Immune System:
Group 2 contains 761 units
Infection:
Group 1 contains 793 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 183976 damage
Immune System group 2 would deal defending group 1 19025 damage
Immune System group 2 would deal defending group 2 19025 damage
Immune System group 2 attacks defending group 1, killing 4 units
Infection group 1 attacks defending group 2, killing 143 units
Immune System:
Group 2 contains 618 units
Infection:
Group 1 contains 789 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 183048 damage
Immune System group 2 would deal defending group 1 15450 damage
Immune System group 2 would deal defending group 2 15450 damage
Immune System group 2 attacks defending group 1, killing 3 units
Infection group 1 attacks defending group 2, killing 143 units
Immune System:
Group 2 contains 475 units
Infection:
Group 1 contains 786 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 182352 damage
Immune System group 2 would deal defending group 1 11875 damage
Immune System group 2 would deal defending group 2 11875 damage
Immune System group 2 attacks defending group 1, killing 2 units
Infection group 1 attacks defending group 2, killing 142 units
Immune System:
Group 2 contains 333 units
Infection:
Group 1 contains 784 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 181888 damage
Immune System group 2 would deal defending group 1 8325 damage
Immune System group 2 would deal defending group 2 8325 damage
Immune System group 2 attacks defending group 1, killing 1 unit
Infection group 1 attacks defending group 2, killing 142 units
Immune System:
Group 2 contains 191 units
Infection:
Group 1 contains 783 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 181656 damage
Immune System group 2 would deal defending group 1 4775 damage
Immune System group 2 would deal defending group 2 4775 damage
Immune System group 2 attacks defending group 1, killing 1 unit
Infection group 1 attacks defending group 2, killing 142 units
Immune System:
Group 2 contains 49 units
Infection:
Group 1 contains 782 units
Group 2 contains 4434 units
Infection group 1 would deal defending group 2 181424 damage
Immune System group 2 would deal defending group 1 1225 damage
Immune System group 2 would deal defending group 2 1225 damage
Immune System group 2 attacks defending group 1, killing 0 units
Infection group 1 attacks defending group 2, killing 49 units
Immune System:
No groups remain.
Infection:
Group 1 contains 782 units
Group 2 contains 4434 units
Immune System: No groups remain. Infection: Group 1 contains 782 units Group 2
contains 4434 units
In the example above, the winning army ends up with 782 + 4434 = 5216 units.
You scan the reindeer's condition (your puzzle input); the white-bearded man looks nervous. As it stands now, how many units would the winning army have?
You scan the reindeer's condition (your puzzle input); the white-bearded man
looks nervous. As it stands now, how many units would the winning army have?
To begin, get your puzzle input.
Your puzzle answer was 16747.
Answer: _____________________ [ [Submit] ]
--- Part Two ---
Things aren't looking good for the reindeer. The man asks whether more milk
and cookies would help you think.
If only you could give the reindeer's immune system a boost, you might be
able to change the outcome of the combat.
A boost is an integer increase in immune system units' attack damage. For
example, if you were to boost the above example's immune system's units by
1570, the armies would instead look like this:
Immune System: 17 units each with 5390 hit points (weak to radiation,
bludgeoning) with an attack that does 6077 fire damage at initiative 2 989
units each with 1274 hit points (immune to fire; weak to bludgeoning,
slashing) with an attack that does 1595 slashing damage at initiative 3
Infection: 801 units each with 4706 hit points (weak to radiation) with an
attack that does 116 bludgeoning damage at initiative 1 4485 units each with
2961 hit points (immune to radiation; weak to fire, cold) with an attack that
does 12 slashing damage at initiative 4
With this boost, the combat proceeds differently:
Immune System: Group 2 contains 989 units Group 1 contains 17 units Infection:
Group 1 contains 801 units Group 2 contains 4485 units
Infection group 1 would deal defending group 2 185832 damage Infection group 1
would deal defending group 1 185832 damage Infection group 2 would deal
defending group 1 53820 damage Immune System group 2 would deal defending
group 1 1577455 damage Immune System group 2 would deal defending group 2
1577455 damage Immune System group 1 would deal defending group 2 206618
damage
Infection group 2 attacks defending group 1, killing 9 units Immune System
group 2 attacks defending group 1, killing 335 units Immune System group 1
attacks defending group 2, killing 32 units Infection group 1 attacks
defending group 2, killing 84 units
Immune System: Group 2 contains 905 units Group 1 contains 8 units Infection:
Group 1 contains 466 units Group 2 contains 4453 units
Infection group 1 would deal defending group 2 108112 damage Infection group 1
would deal defending group 1 108112 damage Infection group 2 would deal
defending group 1 53436 damage Immune System group 2 would deal defending
group 1 1443475 damage Immune System group 2 would deal defending group 2
1443475 damage Immune System group 1 would deal defending group 2 97232 damage
Infection group 2 attacks defending group 1, killing 8 units Immune System
group 2 attacks defending group 1, killing 306 units Infection group 1 attacks
defending group 2, killing 29 units
Immune System: Group 2 contains 876 units Infection: Group 2 contains 4453
units Group 1 contains 160 units
Infection group 2 would deal defending group 2 106872 damage Immune System
group 2 would deal defending group 2 1397220 damage Immune System group 2
would deal defending group 1 1397220 damage
Infection group 2 attacks defending group 2, killing 83 units Immune System
group 2 attacks defending group 2, killing 427 units
After a few fights...
Immune System: Group 2 contains 64 units Infection: Group 2 contains 214 units
Group 1 contains 19 units
Infection group 2 would deal defending group 2 5136 damage Immune System group
2 would deal defending group 2 102080 damage Immune System group 2 would deal
defending group 1 102080 damage
Infection group 2 attacks defending group 2, killing 4 units Immune System
group 2 attacks defending group 2, killing 32 units
Immune System: Group 2 contains 60 units Infection: Group 1 contains 19 units
Group 2 contains 182 units
Infection group 1 would deal defending group 2 4408 damage Immune System group
2 would deal defending group 1 95700 damage Immune System group 2 would deal
defending group 2 95700 damage
Immune System group 2 attacks defending group 1, killing 19 units
Immune System: Group 2 contains 60 units Infection: Group 2 contains 182 units
Infection group 2 would deal defending group 2 4368 damage Immune System group
2 would deal defending group 2 95700 damage
Infection group 2 attacks defending group 2, killing 3 units Immune System
group 2 attacks defending group 2, killing 30 units
After a few more fights...
Immune System: Group 2 contains 51 units Infection: Group 2 contains 40 units
Infection group 2 would deal defending group 2 960 damage Immune System group
2 would deal defending group 2 81345 damage
Infection group 2 attacks defending group 2, killing 0 units Immune System
group 2 attacks defending group 2, killing 27 units
Immune System: Group 2 contains 51 units Infection: Group 2 contains 13 units
Infection group 2 would deal defending group 2 312 damage Immune System group
2 would deal defending group 2 81345 damage
Infection group 2 attacks defending group 2, killing 0 units Immune System
group 2 attacks defending group 2, killing 13 units
Immune System: Group 2 contains 51 units Infection: No groups remain.
This boost would allow the immune system's armies to win! It would be left
with 51 units.
You don't even know how you could boost the reindeer's immune system or what
effect it might have, so you need to be cautious and find the smallest boost
that would allow the immune system to win.
How many units does the immune system have left after getting the smallest
boost it needs to win?
Your puzzle answer was 5923.
Both parts of this puzzle are complete! They provide two gold stars: **
At this point, you should return to your Advent calendar and try another
puzzle.
If you still want to see it, you can get your puzzle input.
References
@@ -228,4 +327,5 @@ References
. https://adventofcode.com/2018/stats
. https://adventofcode.com/2018/sponsors
. https://www.youtube.com/watch?v=NDVjLt_QHL8&t=7
. https://adventofcode.com/2018
. https://adventofcode.com/2018/day/24/input