diff --git a/.gitignore b/.gitignore
index 259148f..1c4b5eb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,6 @@
 # Prerequisites
 *.d
-
+build
 # Compiled Object files
 *.slo
 *.lo
diff --git a/main.cpp b/main.cpp
index d94cc7b..4cf2fce 100644
--- a/main.cpp
+++ b/main.cpp
@@ -1,5 +1,346 @@
+#include <cstdlib>
 #include <iostream>
+#include <cstdint>
+#include <cstring>
+#include <fstream>
 
-int main(int, char**){
+namespace my 
+{
+    class String
+    {
+    private:
+        size_t size_ {};
+        size_t capacity_ {};
+        char* arr_ {nullptr};
+    public:
+        String()
+        {
+            size_ = 1;
+            capacity_ = 0;
+            arr_ = new char[size_];
+        }
+
+        String(const char* str): size_(std::strlen(str))
+        {
+            capacity_ = size_;
+            arr_ = new char[size_]{};
+            std::copy(str, str + size_, arr_);
+        }
+
+        String(const size_t& n): size_(n), capacity_(n)
+        {
+            arr_ = new char[size_]{};
+        }
+
+        String(const String& other): size_(other.size_), capacity_(other.capacity_)
+        {
+            arr_ = new char[size_]{};
+            std::copy(other.arr_, other.arr_ + other.size_, arr_);
+        }
+
+        String& operator=(const String& other)
+        {
+            if (&other == this)
+            {
+                return *this;
+            }
+
+            delete[] arr_;
+            size_ = other.size_;
+            capacity_ = other.capacity_;
+            arr_ = new char[size_]{};
+            std::copy(other.arr_, other.arr_ + other.size_, arr_);
+
+            return *this;
+        }
+
+        ~String()
+        {
+            delete[] arr_;
+        }
+
+        void reallocate()
+        {
+            char* temp = arr_;
+            arr_ = new char[2 * size_ + 1];
+            std::copy(temp, temp + size_, arr_);
+            size_ = size_ * 2 + 1;
+        }
+
+        void push_back(const char& x)
+        {
+            if (capacity_ + 1 >= size_)
+            {
+                reallocate();
+            }
+
+            arr_[capacity_] = x;
+            ++capacity_;
+        }
+
+        size_t size()
+        {
+            return capacity_;
+        }
+
+        bool empty()
+        {
+            return capacity_ <= 0;
+        }
+
+        char pop_back()
+        {
+            --capacity_;
+
+            return arr_[capacity_];
+        }
+
+        char& operator[](const size_t& index)
+        {
+            return arr_[index];
+        }
+
+        String substr(const size_t& left, const size_t& right)
+        {
+            String result(right - left + 1);
+            for (size_t i = left; i <= right; ++i)
+            {
+                result[i - left] = arr_[i];
+            }
+
+            return result;
+        }
+
+        bool find(const char* str)
+        {
+            size_t size = std::strlen(str);
+            if (size > this->size())
+            {
+                return false;
+            }
+
+            for (int i = 0; i < capacity_; ++i)
+            {
+                String temp = *this->substr(i, i + size);
+                if (std::strcmp(temp, str) == 0)
+                {
+                    return true;
+                }
+            }
+            
+            return false;
+        }
+
+        operator char*()
+        {
+            return arr_;
+        }
+
+        friend std::ostream& operator<<(std::ostream& os, const String& obj)
+        {
+            os << obj.arr_;
+
+            return os;
+        }
+    };
     
+    template <typename T>
+    class Vector
+    {
+        private:
+        size_t size_ {};
+        size_t capacity_ {};
+        T* arr_ {nullptr};
+    public:
+        Vector()
+        {
+            size_ = 1;
+            capacity_ = 0;
+            arr_ = new T[size_];
+        }
+
+        Vector(const size_t& n): size_(n), capacity_(n)
+        {
+            arr_ = new T[size_]{};
+        }
+
+        Vector(const Vector& other): size_(other.size_), capacity_(other.capacity_)
+        {
+            arr_ = new T[size_]{};
+            std::copy(other.arr_, other.arr_ + other.size_, arr_);
+        }
+
+        Vector& operator=(const Vector& other)
+        {
+            if (&other == this)
+            {
+                return *this;
+            }
+
+            delete[] arr_;
+            size_ = other.size_;
+            capacity_ = other.capacity_;
+            arr_ = new Vector[size_]{};
+            std::copy(other.arr_, other.arr_ + other.size_, arr_);
+
+            return *this;
+        }
+
+        ~Vector()
+        {
+            delete[] arr_;
+        }
+
+        void reallocate()
+        {
+            T* temp = arr_;
+            arr_ = new T[2 * size_ + 1];
+            std::copy(temp, temp + size_, arr_);
+            size_ = size_ * 2 + 1;
+        }
+
+        void push_back(const T& x)
+        {
+            if (capacity_ + 1 >= size_)
+            {
+                reallocate();
+            }
+
+            arr_[capacity_] = x;
+            ++capacity_;
+        }
+
+        size_t size()
+        {
+            return capacity_;
+        }
+
+        bool empty()
+        {
+            return capacity_ <= 0;
+        }
+
+        T pop_back()
+        {
+            --capacity_;
+
+            return arr_[capacity_];
+        }
+
+        T& operator[](const size_t& index)
+        {
+            return arr_[index];
+        }
+    };
+
+    class Parser
+    {
+    private:
+        const char* input_filename_ {};
+        const char* filter_filename_ {};
+        const char* input_arg_ = "--input";
+        const char* filter_arg_ = "--filterdb";
+    public:
+        bool parse(int size, char** line)
+        {
+            for (size_t i = 0; i < size; ++i)
+            {
+                if (std::strcmp(line[i], input_arg_) == 0 && i + 1 < size)
+                {
+                    input_filename_ = line[i + 1];
+                }
+
+                if (std::strcmp(line[i], filter_arg_) == 0 && i + 1 < size)
+                {
+                    filter_filename_ = line[i + 1];
+                }
+            }
+
+            if (input_filename_ && filter_filename_)
+            {
+                return true;
+            }
+
+            return false;
+        }
+
+        const char* GetInputFilename()
+        {
+            return input_filename_;
+        }
+
+        const char* GetFilterFilename()
+        {
+            return filter_filename_;
+        }
+    };
+} // namespace my
+
+void PrintErrorAndExit()
+{
+    std::cerr << "Error reading command line arguments!" << '\n';
+    std::exit(EXIT_FAILURE);
+}
+
+
+int main(int argc, char** argv)
+{
+    my::Parser parser;
+    if (!parser.parse(argc, argv))
+    {
+        PrintErrorAndExit();
+    }
+
+    std::fstream ffile(parser.GetFilterFilename());
+    if (!ffile.is_open())
+    {
+        std::cerr << "Failed to open filterdb file!" << '\n';
+        std::exit(EXIT_FAILURE);
+    }
+
+    const size_t kBufferSize = 1024;
+    char* fbuffer = new char[kBufferSize];
+    my::Vector<my::String> filter;
+    while (ffile.getline(fbuffer, kBufferSize))
+    {
+        filter.push_back(my::String(fbuffer));
+    }
+
+
+
+    std::fstream ifile(parser.GetInputFilename());
+    if (!ifile.is_open())
+    {
+        std::cerr << "Failed to open input file!" << '\n';
+        std::exit(EXIT_FAILURE);
+    }
+
+    char* ibuffer = new char[kBufferSize];
+    my::Vector<my::String> words;
+    while (ifile.getline(ibuffer, kBufferSize))
+    {
+        int i = 0;
+        while (i < std::strlen(ibuffer))
+        {
+            int left = i;
+            while (i < std::strlen(ibuffer) && ibuffer[i] != ' ' && ibuffer[i] != '\n')
+            {
+                ++i;
+            }
+
+            if (i - left > 1)
+            {
+                my::String str(ibuffer);
+                words.push_back(str.substr(left,i - 1));
+            }
+            ++i;
+        }
+    }
+
+    /*
+        не успел дописать исключение лишних слов
+        для этого была написана вспомогательная функция find
+    */
+
+    return 0;
 }