55 lines
1015 B
C++
55 lines
1015 B
C++
#include <algorithm>
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#include <iostream>
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#include <set>
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struct Pos
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{
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Pos(int x, int y) : x_(x), y_(y) {} // NOLINT(bugprone-easily-swappable-parameters)
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auto operator<(Pos const& rhs) const noexcept -> bool
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{
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return x_ < rhs.x_ || (x_ == rhs.x_ && y_ < rhs.y_);
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}
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auto operator==(Pos const& rhs) const noexcept -> bool { return x_ == rhs.x_ && y_ == rhs.y_; }
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void move(char c)
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{
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switch (c) {
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case '>':
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++x_;
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break;
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case '<':
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--x_;
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break;
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case '^':
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++y_;
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break;
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case 'v':
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--y_;
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break;
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default:
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std::cout << "Unrecognised character: " << c << "\n";
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break;
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}
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}
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int x_;
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int y_;
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};
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auto main() -> int
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{
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for (std::string line; std::getline(std::cin, line);) {
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std::set<Pos> visited;
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Pos santa(0, 0);
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visited.insert(santa);
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for (auto c : line) {
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santa.move(c);
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visited.insert(santa);
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}
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std::cout << "Houses visited = " << visited.size() << "\n";
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}
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return 0;
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} |