47 lines
1.0 KiB
C++
47 lines
1.0 KiB
C++
#include <iostream>
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#include <string>
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template<typename T>
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auto sign(T i) -> decltype(i)
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{
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if (i < 0) {
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return -1;
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}
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if (i > 0) {
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return 1;
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}
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return 0;
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}
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auto main() -> int
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{
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std::string line;
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if (!std::getline(std::cin, line)) {
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std::cerr << "Broken line" << '\n';
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return 1;
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}
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auto target{std::stoul(line)};
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std::pair<int, int> dist{1, 0};
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std::pair<int, int> pos{0, 0};
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decltype(target) val{1};
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while (val + std::abs(dist.first) + std::abs(dist.second) < target) {
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val += std::abs(dist.first) + std::abs(dist.second);
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pos = {pos.first + dist.first, pos.second + dist.second};
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dist = {-dist.second, dist.first};
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if (dist.first > 0) {
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++dist.first;
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}
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if (dist.first < 0) {
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--dist.first;
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}
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}
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auto delta{target - val};
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pos = {pos.first + sign(dist.first) * delta, pos.second + sign(dist.second) * delta};
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std::cout << "Pos = [" << pos.first << ", " << pos.second
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<< "], distance = " << std::abs(pos.first) + std::abs(pos.second) << '\n';
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return 0;
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}
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