40 lines
1012 B
C++
40 lines
1012 B
C++
//
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// Created by Matthew Gretton-Dann on 03/12/2021.
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//
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#include <array>
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#include <iostream>
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#include <string>
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int main()
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{
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constexpr std::array<unsigned, 14> down{0, 3, 6, 7, 8, 5, 10, 11, 12, 9, 10, 13, 12, 13};
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constexpr std::array<unsigned, 14> left{0, 1, 2, 2, 3, 5, 5, 6, 7, 8, 10, 10, 11, 13};
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constexpr std::array<unsigned, 14> up{0, 1, 2, 1, 4, 5, 2, 3, 4, 9, 6, 7, 8, 11};
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constexpr std::array<unsigned, 14> right{0, 1, 3, 4, 4, 6, 7, 8, 9, 9, 11, 12, 12, 13};
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const std::string_view letters{"0123456789ABCD"};
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unsigned pos{5};
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std::string line;
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std::string result;
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while (std::getline(std::cin, line)) {
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for (auto c : line) {
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switch (c) {
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case 'L':
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pos = left[pos];
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break;
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case 'D':
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pos = down[pos];
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break;
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case 'R':
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pos = right[pos];
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break;
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case 'U':
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pos = up[pos];
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break;
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default:
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abort();
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}
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}
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result += letters[pos];
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}
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std::cout << result << '\n';
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} |