35 lines
1010 B
C++
35 lines
1010 B
C++
//
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// Created by Matthew Gretton-Dann on 02/12/2021.
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//
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#include <string>
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#include <iostream>
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int main()
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{
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using namespace std::string_literals;
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static const auto fwd{"forward "s};
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static const auto down{"down "s};
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static const auto up{"up "s};
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std::string line;
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unsigned long horiz{0};
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unsigned long depth{0};
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unsigned long aim{0};
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while (std::getline(std::cin, line)) {
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if (line.size() > fwd.size() && line.substr(0,fwd.size()) == fwd) {
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auto dist{std::stoul(line.substr(fwd.size()))};
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horiz += dist;
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depth += aim * dist;
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}
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if (line.size() > down.size() && line.substr(0,down.size()) == down) {
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aim += std::stoul(line.substr(down.size()));
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}
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if (line.size() > up.size() && line.substr(0,up.size()) == up) {
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aim -= std::stoul(line.substr(up.size()));
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}
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}
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std::cout << "Distance * depth: " << horiz << " * " << depth << " = " << horiz * depth << '\n';
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} |