44 lines
1.0 KiB
C++
44 lines
1.0 KiB
C++
//
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// Created by Matthew Gretton-Dann on 07/12/2021.
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//
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#include <iostream>
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#include <limits>
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#include <numeric>
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#include <string>
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#include <vector>
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auto main() -> int
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{
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std::vector<unsigned> crabs;
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std::string line;
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while (std::getline(std::cin, line)) {
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std::size_t idx{0};
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while (idx < line.size()) {
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if (line[idx] == ',') {
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++idx;
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}
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else {
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std::size_t end{0};
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crabs.emplace_back(std::stoul(line.substr(idx), &end));
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idx += end;
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}
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}
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}
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unsigned min_pos{0};
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unsigned min_fuel{std::numeric_limits<unsigned>::max()};
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auto [low_crab, high_crab] = std::minmax_element(crabs.begin(), crabs.end());
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for (auto pos{*low_crab}; pos <= *high_crab; ++pos) {
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auto fuel{std::accumulate(crabs.begin(), crabs.end(), unsigned{0}, [pos](auto a, auto b) {
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return a + ((b > pos) ? (b - pos) : (pos - b));
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})};
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if (fuel < min_fuel) {
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min_fuel = fuel;
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min_pos = pos;
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}
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}
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std::cout << "Minimum fuel = " << min_fuel << " at position " << min_pos << '\n';
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return 0;
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} |