95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
#include <algorithm>
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#include <cstddef>
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#include <iostream>
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#include <string>
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#include <vector>
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#include <iostream>
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#include <sstream>
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#include <vector>
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#include <string>
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#include <fstream>
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#include <errno.h>
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std::vector<std::string> splitString(const std::string& str) {
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std::istringstream iss(str);
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std::vector<std::string> words;
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std::string word;
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while (iss >> word) {
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words.push_back(word);
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}
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return words;
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}
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int main() {
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std::ifstream inputfile("example");
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std::string input;
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int res = 0;
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if (inputfile.is_open()) {
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// Read each line from the file and store it in the
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// 'line' variable.
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std::string line;
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std::vector<std::string> num_s;
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std::vector<int> num;
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while (std::getline(inputfile, line)) {
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num_s = splitString(line);
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num.clear();
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std::transform(num_s.begin(), num_s.end(), std::back_inserter(num), [](const std::string& s) {
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return std::stoi(s);
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});
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bool safe = true;
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int old_n = -1;
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for (int n : num) {
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if(old_n == -1) {
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old_n = n;
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continue;
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}
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if ((old_n - n) > 2 || (old_n - n) > 0) {
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safe = false;
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}
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old_n = n;
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}
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if (safe) {
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res++;
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continue;
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}
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safe = true;
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old_n = -1;
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for (int n : num) {
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if(old_n == -1) {
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old_n = n;
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continue;
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}
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if ((old_n - n) <= -3 && (old_n - n) < 0) {
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safe = false;
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}
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old_n = n;
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}
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if (safe) {
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res++;
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}
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}
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// Close the file stream once all lines have been
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// read.
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inputfile.close();
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}
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else {
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// Print an error message to the standard error
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// stream if the file cannot be opened.
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std::cerr << "Unable to open file!" << std::endl;
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return ENOENT;
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}
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std::cout << "\n\n" << res << "\n\n";
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return 0;
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} |