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61 lines
1.4 KiB
C++
61 lines
1.4 KiB
C++
#include <cstdio>
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#include <iostream>
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#include <string>
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#include <vector>
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struct Sensor
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{
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long x, y, power;
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Sensor(long xx, long yy, long pp):
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x(xx), y(yy), power(pp) {}
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};
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int main()
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{
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std::vector<Sensor> sensors;
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long px, py, bx, by;
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do {
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std::string line;
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std::getline(std::cin, line);
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if (std::cin.eof())
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break;
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auto a = sscanf(line.c_str(),
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"Sensor at x=%ld, y=%ld: closest beacon is at x=%ld, y=%ld",
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&px, &py, &bx, &by);
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long power = std::abs(px - bx) + std::abs(py - by);
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sensors.emplace_back(px, py, power);
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} while (1);
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std::cout << "# of sensors: " << sensors.size() << std::endl;
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for (long y = 0; y <= 4000000; ++y) {
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std::cout << "\r \r" << y;
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fflush(stdout);
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for (long x = 0; x <= 4000000; ++x) {
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bool h = false;
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for (auto& s : sensors) {
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auto dist = std::abs(x - s.x) + std::abs(y - s.y);
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if (dist <= s.power) {
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long spr = (dist - std::abs(s.y - y));
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x += spr - std::abs(s.x - x);
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h = true;
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break;
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}
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}
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if (!h) {
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std::cout << std::endl << x << ", " << y << std::endl;
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return 0;
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}
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}
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}
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return 0;
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}
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