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Implement day 7 part 1.

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Bert Peters
2019-12-07 08:13:55 +01:00
parent 594c061c60
commit 99b42ff04e
7 changed files with 32 additions and 1 deletions
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25
2019/src/day07.cpp
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@@ -1,8 +1,31 @@
#include <iostream>
#include "days.hpp"
#include "utils.hpp"
namespace {
int simulate(const std::vector<int>& program, const std::vector<int> phases) {
int state = 0;
for (int phase : phases) {
auto copy = program;
auto result = aoc2019::run_intcode(copy, { phase, state });
state = result.front();
}
return state;
}
}
void aoc2019::day07_part1(std::istream &input, std::ostream &output) {
output << "Not implemented\n";
const auto program = aoc2019::read_intcode(input);
std::vector<int> phases{0, 1, 2, 3, 4};
int best = 0;
do {
best = std::max(simulate(program, phases), best);
} while (std::next_permutation(phases.begin(), phases.end()));
output << best << std::endl;
}
void aoc2019::day07_part2(std::istream &input, std::ostream &output) {