diff --git a/sln/vc10/bitfield/bitfield.vcxproj b/sln/vc10/bitfield/bitfield.vcxproj
index f4b10eb18..c0a3e148c 100644
--- a/sln/vc10/bitfield/bitfield.vcxproj
+++ b/sln/vc10/bitfield/bitfield.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -14,16 +14,19 @@
     <ProjectGuid>{A76282B3-4276-4945-9AF2-3AC68111A828}</ProjectGuid>
     <RootNamespace>bitfield</RootNamespace>
     <Keyword>Win32Proj</Keyword>
+    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
     <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/sln/vc10/gtest/gtest.vcxproj b/sln/vc10/gtest/gtest.vcxproj
index 518510409..9a4ba0b32 100644
--- a/sln/vc10/gtest/gtest.vcxproj
+++ b/sln/vc10/gtest/gtest.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -14,16 +14,19 @@
     <ProjectGuid>{60932AFC-7808-48B7-B3BF-F2BC151C0065}</ProjectGuid>
     <RootNamespace>gtest</RootNamespace>
     <Keyword>Win32Proj</Keyword>
+    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
     <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/sln/vc10/sample_prime_numbers/sample_prime_numbers.vcxproj b/sln/vc10/sample_prime_numbers/sample_prime_numbers.vcxproj
index 981eb64a1..0acdc102f 100644
--- a/sln/vc10/sample_prime_numbers/sample_prime_numbers.vcxproj
+++ b/sln/vc10/sample_prime_numbers/sample_prime_numbers.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -14,16 +14,19 @@
     <ProjectGuid>{5D0218F2-E502-414F-BA66-9E76B2785178}</ProjectGuid>
     <RootNamespace>sample_prime_numbers</RootNamespace>
     <Keyword>Win32Proj</Keyword>
+    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
     <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/sln/vc10/test_bitfield/test_bitfield.vcxproj b/sln/vc10/test_bitfield/test_bitfield.vcxproj
index 5b72614b8..03c2eb5d9 100644
--- a/sln/vc10/test_bitfield/test_bitfield.vcxproj
+++ b/sln/vc10/test_bitfield/test_bitfield.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
       <Configuration>Debug</Configuration>
@@ -14,16 +14,19 @@
     <ProjectGuid>{C650C93E-F0A7-4235-9F5F-0DCE78609BFB}</ProjectGuid>
     <RootNamespace>test_bitfield</RootNamespace>
     <Keyword>Win32Proj</Keyword>
+    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
     <WholeProgramOptimization>true</WholeProgramOptimization>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
+    <PlatformToolset>v141</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/src/tbitfield.cpp b/src/tbitfield.cpp
index 3bfa48182..d8dad4303 100644
--- a/src/tbitfield.cpp
+++ b/src/tbitfield.cpp
@@ -13,86 +13,250 @@ static TBitField FAKE_BITFIELD(1);
 
 TBitField::TBitField(int len)
 {
+  if (len >= 0)
+  {
+    BitLen = len;
+    MemLen = len * sizeof(TELEM) * 8;
+    pMem = new TELEM[MemLen];
+    for (int i = 0; i < MemLen; i++)
+    {
+      pMem[i] = 0;
+    }
+  }
+  else
+    throw "Error";
 }
 
 TBitField::TBitField(const TBitField &bf) // конструктор копирования
 {
+  MemLen = bf.MemLen;
+  BitLen = bf.BitLen;
+  pMem = new TELEM[MemLen];
+  for (int i = 0; i < MemLen; i++)
+  {
+    pMem[i] = bf.pMem[i];
+  }
 }
 
 TBitField::~TBitField()
 {
+  if (pMem != 0)
+  {
+    delete[] pMem;
+  }
+  pMem = 0;
+  MemLen = 0;
+  BitLen = 0;
 }
 
 int TBitField::GetMemIndex(const int n) const // индекс Мем для бита n
 {
-    return FAKE_INT;
+  if ((n < 0) || (n > BitLen))
+  {
+    throw "Error";
+  }
+  else
+    return n >> 5;
 }
 
 TELEM TBitField::GetMemMask(const int n) const // битовая маска для бита n
 {
-    return FAKE_INT;
+  if ((n < 0) && (n < BitLen))
+  {
+    throw "Error";
+  }
+  return 1 << (n & 31);
 }
 
 // доступ к битам битового поля
 
 int TBitField::GetLength(void) const // получить длину (к-во битов)
 {
-  return FAKE_INT;
+  return BitLen;
 }
 
 void TBitField::SetBit(const int n) // установить бит
 {
+  if ((n >= 0) && (n < BitLen))
+  {
+    int i = GetMemIndex(n);
+    int m = GetMemMask(n);
+    pMem[i] = pMem[i] | m;
+  }
+  else
+  {
+    throw "Error";
+  }
 }
 
 void TBitField::ClrBit(const int n) // очистить бит
 {
+  if ((n >= 0) && (n < BitLen))
+  {
+    int i = GetMemIndex(n);
+    int m = GetMemMask(n);
+    pMem[i] = pMem[i] & ~m;
+  }
+  else
+  {
+    throw "error";
+  }
 }
 
 int TBitField::GetBit(const int n) const // получить значение бита
 {
-  return FAKE_INT;
+  if ((n >= 0) && (n < BitLen))
+  {
+    int i = GetMemIndex(n);
+    int m = GetMemMask(n);
+    return (pMem[i] & m);
+  }
+  else
+  {
+    throw "Error";
+  }
 }
 
 // битовые операции
 
 TBitField& TBitField::operator=(const TBitField &bf) // присваивание
 {
-    return FAKE_BITFIELD;
+  if (this == &bf)
+    return *this;
+  else
+  {
+    delete[] pMem;
+    MemLen = bf.MemLen;
+    pMem = new TELEM[MemLen];
+    BitLen = bf.BitLen;
+    for (int i = 0; i < MemLen; i++)
+    {
+      pMem[i] = bf.pMem[i];
+    }
+    return *this;
+  }
 }
 
 int TBitField::operator==(const TBitField &bf) const // сравнение
 {
-  return FAKE_INT;
+  if ((MemLen == bf.MemLen) && (BitLen == bf.BitLen))
+  {
+    for (int i = 0; i < MemLen; i++)
+    {
+      if (pMem[i] != bf.pMem[i])
+        return 0;
+    }
+    return 1;
+  }
+  return 0;
 }
 
 int TBitField::operator!=(const TBitField &bf) const // сравнение
 {
-  return FAKE_INT;
+  if ((MemLen == bf.MemLen) && (BitLen == bf.BitLen))
+  {
+    for (int i = 0; i < MemLen; i++)
+    {
+      if (pMem[i] == bf.pMem[i])
+        return 1;
+    }
+    return 0;
+  }
+  return 1;
 }
 
 TBitField TBitField::operator|(const TBitField &bf) // операция "или"
 {
-    return FAKE_BITFIELD;
+  if (BitLen >= bf.BitLen)
+  {
+    TBitField res = TBitField(BitLen);
+    for (int i = 0; i < MemLen; i++)
+    {
+      res.pMem[i] = pMem[i] | bf.pMem[i];
+    }
+    return res;
+  }
+  else
+  {
+    TBitField res = TBitField(bf.BitLen);
+    for (int i = 0; i < MemLen; i++)
+    {
+      res.pMem[i] = pMem[i] | bf.pMem[i];
+    }
+    return res;
+  }
 }
 
 TBitField TBitField::operator&(const TBitField &bf) // операция "и"
 {
-    return FAKE_BITFIELD;
+  if (BitLen >= bf.BitLen)
+  {
+    TBitField res = TBitField(BitLen);
+    for (int i = 0; i < MemLen; i++)
+    {
+      res.pMem[i] = pMem[i] & bf.pMem[i];
+    }
+    return res;
+  }
+  else
+  {
+    TBitField res = TBitField(bf.BitLen);
+    for (int i = 0; i < MemLen; i++)
+    {
+      res.pMem[i] = pMem[i] & bf.pMem[i];
+    }
+    return res;
+  }
 }
 
 TBitField TBitField::operator~(void) // отрицание
 {
-    return FAKE_BITFIELD;
+  TBitField res(*this);
+  for (int i = 0; i < BitLen; i++)
+  {
+    if (GetBit(i))
+    {
+      res.ClrBit(i);
+    }
+    else
+      res.SetBit(i);
+  }
+  return res;
 }
 
 // ввод/вывод
 
 istream &operator>>(istream &istr, TBitField &bf) // ввод
 {
-    return istr;
+  int l;
+  istr >> l;
+  TBitField res(l);
+
+  char* m = new char[l];
+  istr >> m;
+  for (int i = 0; i < bf.BitLen; i++)
+  {
+    if (m[i] == 0)
+    {
+      bf.ClrBit(i);
+    }
+    else
+    {
+      if (m[i] == 1)
+      {
+        bf.SetBit(i);
+      }
+      else
+        throw "Error";
+    }
+  }
+  return istr;
 }
 
 ostream &operator<<(ostream &ostr, const TBitField &bf) // вывод
 {
-    return ostr;
+  for (int i = 0; i < bf.BitLen; i++)
+    ostr << bf.GetBit(i);
+
+  return ostr;
 }
diff --git a/src/tset.cpp b/src/tset.cpp
index e70a76e58..78f036a32 100644
--- a/src/tset.cpp
+++ b/src/tset.cpp
@@ -12,93 +12,128 @@ static const int FAKE_INT = -1;
 static TBitField FAKE_BITFIELD(1);
 static TSet FAKE_SET(1);
 
-TSet::TSet(int mp) : BitField(-1)
+TSet::TSet(int mp) : BitField(mp)
 {
+  MaxPower = mp;
 }
 
 // конструктор копирования
-TSet::TSet(const TSet &s) : BitField(-1)
+TSet::TSet(const TSet &s) : BitField(s.BitField)
 {
+  MaxPower = s.MaxPower;
 }
 
 // конструктор преобразования типа
-TSet::TSet(const TBitField &bf) : BitField(-1)
+TSet::TSet(const TBitField &bf) : BitField(bf)
 {
+  MaxPower = bf.GetLength();
 }
 
 TSet::operator TBitField()
 {
-    return FAKE_BITFIELD;
+  TBitField res(this->BitField);
+  return res;
 }
 
 int TSet::GetMaxPower(void) const // получить макс. к-во эл-тов
 {
-    return FAKE_INT;
+  return MaxPower;
 }
 
 int TSet::IsMember(const int Elem) const // элемент множества?
 {
-    return FAKE_INT;
+  return BitField.GetBit(Elem);
 }
 
 void TSet::InsElem(const int Elem) // включение элемента множества
 {
+  BitField.SetBit(Elem);
 }
 
 void TSet::DelElem(const int Elem) // исключение элемента множества
 {
+  BitField.ClrBit(Elem);
 }
 
 // теоретико-множественные операции
 
 TSet& TSet::operator=(const TSet &s) // присваивание
 {
-    return FAKE_SET;
+  MaxPower = s.MaxPower;
+  BitField = s.BitField;
+  return *this;
 }
 
 int TSet::operator==(const TSet &s) const // сравнение
 {
-    return FAKE_INT;
+  return BitField == s.BitField;
 }
 
 int TSet::operator!=(const TSet &s) const // сравнение
 {
-    return FAKE_INT;
+  return BitField != s.BitField;
 }
 
 TSet TSet::operator+(const TSet &s) // объединение
 {
-    return FAKE_SET;
+  TSet res(BitField | s.BitField);
+  return res;
 }
 
 TSet TSet::operator+(const int Elem) // объединение с элементом
 {
-    return FAKE_SET;
+  BitField.SetBit(Elem);
+  return *this;
 }
 
 TSet TSet::operator-(const int Elem) // разность с элементом
 {
-    return FAKE_SET;
+  TSet res(BitField & Elem);
+  return res;
 }
 
 TSet TSet::operator*(const TSet &s) // пересечение
 {
-    return FAKE_SET;
+  TSet res(BitField & s.BitField);
+  return res;
 }
 
 TSet TSet::operator~(void) // дополнение
 {
-    return FAKE_SET;
+  TSet res(~BitField);
+  return res;
 }
 
 // перегрузка ввода/вывода
 
 istream &operator>>(istream &istr, TSet &s) // ввод
 {
-    return istr;
+  int l;
+  istr >> l;
+  TSet res(l);
+  int k = 0;
+  for (int i = 0; i < l; i++)
+  {
+    istr >> k;
+    if (k == 0)
+      res.DelElem(i);
+    else
+      res.InsElem(i);
+  }
+  s = res;
+  
+  return istr;
 }
 
 ostream& operator<<(ostream &ostr, const TSet &s) // вывод
 {
-    return ostr;
+  int k = s.GetMaxPower();
+  ostr << "{";
+  for (int i = 0; i < k; i++)
+  {
+    if (s.IsMember(i))
+      ostr << i << ";";
+  }
+  ostr << "}";
+  return ostr;
 }