44 lines
871 B
C++
44 lines
871 B
C++
//
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// Created by Matthew Gretton-Dann on 01/12/2022.
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//
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#include <cstdlib>
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#include <iomanip>
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#include <iostream>
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#include <map>
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#include <numeric>
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#include <set>
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#include <string>
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#include <utility>
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#include <vector>
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using UInt = std::uint64_t;
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using namespace std::string_literals;
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auto main() -> int
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{
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std::string polymer;
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if (!std::getline(std::cin, polymer)) {
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std::cout << "Unable to read line.\n";
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return EXIT_FAILURE;
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}
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auto it{polymer.begin()};
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while ((it + 1) != polymer.end()) {
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if (*it != *(it + 1) && (*it == std::tolower(*(it + 1)) || *it == std::toupper(*(it + 1)))) {
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it = polymer.erase(it, it + 2);
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if (it != polymer.begin()) {
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--it;
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}
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}
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else {
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++it;
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}
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}
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std::cout << "Polymer: " << polymer << "\n";
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std::cout << "Length: " << polymer.size() << "\n";
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return EXIT_SUCCESS;
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}
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