Files
AdventOfCode2025/Day9/Question1/main.cpp
2025-12-10 05:33:34 +02:00

38 lines
1.0 KiB
C++

#include <cmath>
#include <cstdint>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
struct Vector2D {
int64_t x, y;
};
int main() {
std::fstream input("input");
std::string currentLine = "";
std::vector<Vector2D> points{};
int64_t password = 0;
while (std::getline(input, currentLine, '\n')) {
uint16_t positionOfTheComma = currentLine.find(',');
points.push_back({std::stoll(currentLine.substr(0, positionOfTheComma)),
std::stoll(currentLine.substr(positionOfTheComma + 1))});
}
uint64_t count = 0, pointsSize = points.size();
for (Vector2D &point : points) {
for (uint64_t index = ++count; index < pointsSize; index++) {
Vector2D *position1 = &point, *position2 = &points[index];
int64_t area = (std::abs(position2->x - position1->x) + 1) *
(std::abs(position2->y - position1->y) + 1);
if (area > password) {
password = area;
}
}
}
std::cout << password << std::endl;
}