01

01/CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+enable_language(CXX)
+
+project(AoC01)
+
+if(APPLE)
+    include_directories(/usr/local/include)
+    link_directories(/usr/local/lib)
+endif()
+
+if(WIN32)
+	add_executable(${CMAKE_PROJECT_NAME} WIN32)
+else()
+	add_executable(${CMAKE_PROJECT_NAME})
+endif()
+
+target_sources(${CMAKE_PROJECT_NAME}
+	PRIVATE main.cpp
+	)

01/main.cpp

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+#include <fstream>
+#include <iostream>
+#include <sstream>
+#include <vector>
+
+std::vector<int> getDepths(const std::string &file_name) {
+    std::ifstream file(file_name);
+    std::vector<int> result{};
+    int tmp = 0;
+    std::string str;
+    while (std::getline(file, str)) {
+        std::stringstream ss(str);
+        ss >> tmp;
+        result.push_back(tmp);
+    }
+    return result;
+}
+
+int part1(const std::vector<int> &input) {
+    int result = 0;
+    int tmp = input[0];
+    for (auto &depth : input) {
+        if (depth > tmp) {
+            result++;
+        }
+        tmp = depth;
+    }
+    return result;
+}
+
+int part2(const std::vector<int> &input) {
+    int result = 0;
+    int tmp = input[0] + input[1] + input[2];
+    for (size_t i = 3; i < input.size(); i++) {
+        auto window = input[i] + input[i - 1] + input[i - 2];
+        if (window > tmp) {
+            result++;
+        }
+        tmp = window;
+    }
+    return result;
+}
+
+int main(int argc, char **argv) {
+    if (argc < 2) {
+        std::cerr << "You must provide input file!" << std::endl;
+        return 1;
+    }
+    auto depths = getDepths(argv[1]);
+    std::cout << "There are \033[91;1m" << part1(depths)
+              << "\033[0m depth increases." << std::endl;
+    std::cout << "There are \033[91;1m" << part2(depths)
+              << "\033[0m window depth increases." << std::endl;
+    return 0;
+}