diff --git a/src/main/java/school/lemon/changerequest/java/.gitkeep b/src/main/java/school/lemon/changerequest/java/.gitkeep
deleted file mode 100644
index e69de29..0000000
diff --git a/src/main/java/school/lemon/changerequest/java/Employees/Accountant.java b/src/main/java/school/lemon/changerequest/java/Employees/Accountant.java
new file mode 100644
index 0000000..910e958
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/Employees/Accountant.java
@@ -0,0 +1,29 @@
+package school.lemon.changerequest.java.Employees;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class Accountant extends Employee {
+    private static int countAccountant;
+
+    public Accountant(String name) {
+        super(name);
+    }
+
+    @Override
+    public double calculateSalary() {
+        if (getRatioOfHours() >= 1.) {
+            return getSalary();
+        }
+        return getRatioOfHours() * getSalary();
+    }
+
+    public int overallSalary(Employee[] employees) {
+        double i = 0.;
+        for (Employee employee : employees) {
+            i += employee.calculateSalary();
+        }
+        return (int) i;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/school/lemon/changerequest/java/Employees/Employee.java b/src/main/java/school/lemon/changerequest/java/Employees/Employee.java
new file mode 100644
index 0000000..615c337
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/Employees/Employee.java
@@ -0,0 +1,51 @@
+package school.lemon.changerequest.java.Employees;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class Employee {
+    private String name;
+    private int salary;
+    private int hours;
+    public static final int DEFAULT_HOURS = 160;
+    public static final int DEFAULT_SALARY = 100;
+
+
+    public Employee(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public int getSalary() {
+        return salary;
+    }
+
+    public void setSalary(int salary) {
+        this.salary = salary;
+    }
+
+    public int getHours() {
+        return hours;
+    }
+
+    public void setHours(int hours) {
+        this.hours = hours;
+    }
+
+    public double getRatioOfHours() {
+        return (double) getHours() / DEFAULT_HOURS;
+    }
+
+    public double calculateSalary() {
+        return getRatioOfHours() * getSalary();
+    }
+
+    @Override
+    public String toString() {
+        return "Current month salary of " + getName() + " is " + calculateSalary();
+    }
+}
diff --git a/src/main/java/school/lemon/changerequest/java/Employees/Manager.java b/src/main/java/school/lemon/changerequest/java/Employees/Manager.java
new file mode 100644
index 0000000..6f740ce
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/Employees/Manager.java
@@ -0,0 +1,20 @@
+package school.lemon.changerequest.java.Employees;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class Manager extends Employee {
+
+    public Manager(String name) {
+        super(name);
+    }
+
+    @Override
+    public double calculateSalary() {
+        if (getRatioOfHours() >= 1.) {
+            return getSalary();
+        }
+        return getRatioOfHours() * getSalary();
+    }
+}
diff --git a/src/main/java/school/lemon/changerequest/java/Employees/Programmer.java b/src/main/java/school/lemon/changerequest/java/Employees/Programmer.java
new file mode 100644
index 0000000..ddc895e
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/Employees/Programmer.java
@@ -0,0 +1,17 @@
+package school.lemon.changerequest.java.Employees;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class Programmer extends Employee {
+
+    public Programmer(String name) {
+        super(name);
+    }
+
+    @Override
+    public double calculateSalary() {
+        return getRatioOfHours() * getSalary();
+    }
+}
diff --git a/src/main/java/school/lemon/changerequest/java/Employees/Test.java b/src/main/java/school/lemon/changerequest/java/Employees/Test.java
new file mode 100644
index 0000000..466a94f
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/Employees/Test.java
@@ -0,0 +1,47 @@
+package school.lemon.changerequest.java.Employees;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class Test {
+    public static void main(String[] args) {
+//
+        Employee[] employee = new Employee[6];
+
+        employee[0] = new Programmer("One");
+        employee[0].setSalary(Employee.DEFAULT_SALARY);
+        employee[0].setHours(80);
+
+        employee[1] = new Programmer("Two");
+        employee[1].setSalary(Employee.DEFAULT_SALARY);
+        employee[1].setHours(320);
+
+        employee[2] = new Accountant("Three");
+        employee[2].setSalary(Employee.DEFAULT_SALARY);
+        employee[2].setHours(80);
+
+        Accountant accountant = new Accountant("Four");
+        accountant.setSalary(Employee.DEFAULT_SALARY);
+        accountant.setHours(320);
+        employee[3] = accountant;
+
+        employee[4] = new Manager("Five");
+        employee[4].setSalary(Employee.DEFAULT_SALARY);
+        employee[4].setHours(80);
+
+        employee[5] = new Manager("Six");
+        employee[5].setSalary(Employee.DEFAULT_SALARY);
+        employee[5].setHours(320);
+
+        System.out.println("Employees salary is " + accountant.overallSalary(employee));
+        System.out.printf("Programmer %4$s with salary %1$d worked %2$d hours - salary is %3$d \n", employee[0].getSalary(), employee[0].getHours(), (int) employee[0].calculateSalary(), employee[0].getName());
+        System.out.printf("Programmer %4$s with salary %1$d worked %2$d hours - salary is %3$d \n", employee[1].getSalary(), employee[1].getHours(), (int) employee[1].calculateSalary(), employee[1].getName());
+        System.out.printf("Accountant %4$s with salary %1$d worked %2$d hours - salary is %3$d \n", employee[2].getSalary(), employee[2].getHours(), (int) employee[2].calculateSalary(), employee[2].getName());
+        System.out.printf("Accountant %4$s with salary %1$d worked %2$d hours - salary is %3$d \n", employee[3].getSalary(), employee[3].getHours(), (int) employee[3].calculateSalary(), employee[3].getName());
+        System.out.printf("Manger %4$s with salary %1$d worked %2$d hours - salary is %3$d \n", employee[4].getSalary(), employee[4].getHours(), (int) employee[4].calculateSalary(), employee[4].getName());
+        System.out.printf("Manger %4$s with salary %1$d worked %2$d hours - salary is %3$d \n", employee[5].getSalary(), employee[5].getHours(), (int) employee[5].calculateSalary(), employee[5].getName());
+
+
+    }
+}
diff --git a/src/main/java/school/lemon/changerequest/java/FractionNumber/FractionNumber.java b/src/main/java/school/lemon/changerequest/java/FractionNumber/FractionNumber.java
new file mode 100644
index 0000000..4ad8913
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/FractionNumber/FractionNumber.java
@@ -0,0 +1,70 @@
+package school.lemon.changerequest.java.FractionNumber;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class FractionNumber {
+    private int dividend;
+    private int divisor;
+    private static int DEFAULT_DIVISOR = 1;
+    public static final FractionNumber ONE = new FractionNumber(1);
+    public static final FractionNumber ZERO = new FractionNumber(0);
+
+    public FractionNumber(int dividend, int divisor) {
+        if (divisor == 0) throw new IllegalArgumentException("divisor must not be zero");
+        if (dividend == 0) {
+            this.dividend = dividend;
+            this.divisor = DEFAULT_DIVISOR;
+        } else {
+            this.dividend = dividend;
+            this.divisor = divisor;
+            int nod = gcd(this.dividend, this.divisor);
+            this.dividend = dividend / nod;
+            this.divisor = divisor / nod;
+        }
+    }
+
+    private int gcd(int dividend, int divisor) {
+        int maxValue;
+        int minValue;
+        int nod;
+        if (dividend > divisor) {
+            maxValue = dividend;
+            minValue = divisor;
+        } else {
+            maxValue = divisor;
+            minValue = dividend;
+        }
+        for (nod = maxValue; nod >= minValue; nod--) {
+            if (dividend % nod == 0 & divisor % nod == 0)
+                return nod;
+        }
+        return 1;
+    }
+
+
+    public FractionNumber(int dividend) {
+        this.dividend = dividend;
+        this.divisor = 1;
+    }
+
+    public int getDividend() {
+        return this.dividend;
+    }
+
+    public int getDivisor() {
+        return this.divisor;
+    }
+
+    public double decimalValue() {
+        return ((double) dividend) / ((double) divisor);
+    }
+
+    @Override
+    public String toString() {
+        return "" + dividend + "/" + divisor;
+    }
+
+
+}
diff --git a/src/main/java/school/lemon/changerequest/java/FractionNumber/FractionNumberOperations.java b/src/main/java/school/lemon/changerequest/java/FractionNumber/FractionNumberOperations.java
new file mode 100644
index 0000000..1bd7773
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/FractionNumber/FractionNumberOperations.java
@@ -0,0 +1,59 @@
+package school.lemon.changerequest.java.FractionNumber;
+
+/**
+ * Created by lbrdev on 04.01.2017.
+ * Project: oop.pr1
+ */
+public class FractionNumberOperations {
+    public FractionNumber add(FractionNumber a, FractionNumber b) {
+
+        if (a.getDivisor() == b.getDivisor()) {
+            return new FractionNumber(a.getDividend() + a.getDividend(), a.getDivisor());
+        } else {
+            int tmp = 1;
+
+            while (tmp <= a.getDivisor() * b.getDivisor()) {
+                if (tmp % a.getDivisor() == 0 && tmp % b.getDivisor() == 0) {
+                    break;
+                }
+                tmp++;
+            }
+
+            int i = a.getDividend() * (tmp / a.getDivisor());
+            int j = b.getDividend() * (tmp / b.getDivisor());
+
+            return new FractionNumber(i + j, tmp);
+        }
+    }
+
+    public FractionNumber div(FractionNumber a, FractionNumber b) {
+        return new FractionNumber(a.getDividend() * b.getDivisor(), b.getDividend() * a.getDivisor());
+    }
+
+    public FractionNumber mul(FractionNumber a, FractionNumber b) {
+        return new FractionNumber(a.getDividend() * b.getDividend(), a.getDivisor() * b.getDivisor());
+    }
+
+    public FractionNumber sub(FractionNumber a, FractionNumber b) {
+
+        if (a.getDivisor() == b.getDivisor()) {
+            return new FractionNumber(a.getDividend() - b.getDividend(), a.getDivisor());
+        } else {
+            int tmp = 1;
+
+            while (tmp <= a.getDivisor() * b.getDivisor()) {
+                if (tmp % a.getDivisor() == 0 && tmp % b.getDivisor() == 0) {
+                    break;
+                }
+                tmp++;
+            }
+
+            int i = a.getDividend() * (tmp / a.getDivisor());
+            int j = b.getDividend() * (tmp / b.getDivisor());
+
+            return new FractionNumber(i - j, tmp);
+        }
+
+    }
+}
+
diff --git a/src/main/java/school/lemon/changerequest/java/FractionNumber/TestFractionNumber.java b/src/main/java/school/lemon/changerequest/java/FractionNumber/TestFractionNumber.java
new file mode 100644
index 0000000..211786c
--- /dev/null
+++ b/src/main/java/school/lemon/changerequest/java/FractionNumber/TestFractionNumber.java
@@ -0,0 +1,23 @@
+package school.lemon.changerequest.java.FractionNumber;
+
+/**
+ * Created by heroy on 04.01.2017.
+ */
+public class TestFractionNumber {
+    public static void main(String[] args) {
+        FractionNumberOperations operation = new FractionNumberOperations();
+        FractionNumber number1 = new FractionNumber(1, 4);
+        FractionNumber number2 = new FractionNumber(5, 1);
+        System.out.println("GetNumber 1 = " + number1);
+        System.out.println("GetNumber 2 = " + number2);
+        System.out.println("Separately - " + number1.getDividend() + " and " + number1.getDivisor());
+        System.out.println("To string - " + number1.toString());
+        System.out.println("Object ONE and ZERO - " + FractionNumber.ONE + " " + FractionNumber.ZERO);
+        System.out.println("With only dividend - " + new FractionNumber(5));
+        System.out.println("Decimal Value = " + number1.decimalValue());
+        System.out.println("Num1*Num2= " + operation.mul(number1, number2));
+        System.out.println("Num1/Num2= " + operation.div(number1, number2));
+        System.out.println("Num1+Num2= " + operation.add(number1, number2));
+        System.out.println("Num1-Num2= " + operation.sub(number1, number2));
+    }
+}