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AoC2022_10.cpp
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AoC2022_10.cpp
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#include <assert.h>
#include <numeric>
#include <string>
#include <vector>
#include "../../aoc/aoc.hpp"
#include "../../aoc/grid/grid.hpp"
#include "../../aoc/ocr/ocr.hpp"
using namespace std;
const char FILL = '#';
const char EMPTY = ' ';
vector<pair<int, int>> program(const vector<string>& input) {
int x = 1;
int cycles = 0;
vector<pair<int, int>> v;
for (const string& line : input) {
const auto splits = aoc::split(line);
if (splits[0] == "noop") {
v.push_back(make_pair(cycles, x));
cycles++;
} else if (splits[0] == "addx") {
v.push_back(make_pair(cycles, x));
cycles++;
v.push_back(make_pair(cycles, x));
cycles++;
x += stoi(splits[1]);
}
}
return v;
}
inline int check(const int cycles, const int x) {
return cycles % 40 == 20 ? x * cycles : 0;
}
inline char draw(const int cycles, const int x) {
return abs(x - cycles % 40) <= 1 ? FILL : EMPTY;
}
vector<string> getPixels(const vector<string>& input) {
const auto& p = program(input);
vector<char> pixels;
for (const pair<int, int>& state : p) {
pixels.push_back(draw(state.first, state.second));
}
vector<string> grid;
for (int i : aoc::Range::range(0, 240, 40)) {
grid.push_back(string(pixels.begin() + i, pixels.begin() + i + 40));
}
return grid;
}
string part1(const vector<string>& input) {
const auto& p = program(input);
int ans = accumulate(p.begin(), p.end(), 0,
[](const int a, const pair<int, int>& p) {
return a + check(p.first + 1, p.second);
});
return to_string(ans);
}
string part2(const vector<string>& input) {
const Grid<char> drawing = Grid<char>::from(getPixels(input));
DEBUG(drawing.toString());
return ocr::convert6(drawing, FILL, EMPTY);
}
// clang-format off
const vector<string> TEST = {
"addx 15",
"addx -11",
"addx 6",
"addx -3",
"addx 5",
"addx -1",
"addx -8",
"addx 13",
"addx 4",
"noop",
"addx -1",
"addx 5",
"addx -1",
"addx 5",
"addx -1",
"addx 5",
"addx -1",
"addx 5",
"addx -1",
"addx -35",
"addx 1",
"addx 24",
"addx -19",
"addx 1",
"addx 16",
"addx -11",
"noop",
"noop",
"addx 21",
"addx -15",
"noop",
"noop",
"addx -3",
"addx 9",
"addx 1",
"addx -3",
"addx 8",
"addx 1",
"addx 5",
"noop",
"noop",
"noop",
"noop",
"noop",
"addx -36",
"noop",
"addx 1",
"addx 7",
"noop",
"noop",
"noop",
"addx 2",
"addx 6",
"noop",
"noop",
"noop",
"noop",
"noop",
"addx 1",
"noop",
"noop",
"addx 7",
"addx 1",
"noop",
"addx -13",
"addx 13",
"addx 7",
"noop",
"addx 1",
"addx -33",
"noop",
"noop",
"noop",
"addx 2",
"noop",
"noop",
"noop",
"addx 8",
"noop",
"addx -1",
"addx 2",
"addx 1",
"noop",
"addx 17",
"addx -9",
"addx 1",
"addx 1",
"addx -3",
"addx 11",
"noop",
"noop",
"addx 1",
"noop",
"addx 1",
"noop",
"noop",
"addx -13",
"addx -19",
"addx 1",
"addx 3",
"addx 26",
"addx -30",
"addx 12",
"addx -1",
"addx 3",
"addx 1",
"noop",
"noop",
"noop",
"addx -9",
"addx 18",
"addx 1",
"addx 2",
"noop",
"noop",
"addx 9",
"noop",
"noop",
"noop",
"addx -1",
"addx 2",
"addx -37",
"addx 1",
"addx 3",
"noop",
"addx 15",
"addx -21",
"addx 22",
"addx -6",
"addx 1",
"noop",
"addx 2",
"addx 1",
"noop",
"addx -10",
"noop",
"noop",
"addx 20",
"addx 1",
"addx 2",
"addx 2",
"addx -6",
"addx -11",
"noop",
"noop",
"noop",
};
const vector<string> RESULT = {
"## ## ## ## ## ## ## ## ## ## ",
"### ### ### ### ### ### ### ",
"#### #### #### #### #### ",
"##### ##### ##### ##### ",
"###### ###### ###### ####",
"####### ####### ####### ",
};
// clang-format on
void samples() {
assert(part1(TEST) == "13140");
assert(getPixels(TEST) == RESULT);
}
SMAIN(2022, 10)