diff --git a/1/1.cpp b/1/1.cpp
index b83dbef..6a1b934 100644
--- a/1/1.cpp
+++ b/1/1.cpp
@@ -2,16 +2,38 @@
 #include <iostream>
 #include <vector>
 #include <algorithm>
+#include <string>
 using namespace std;
 
 class Person {
 public:
-	
+
 	Person(const string& name) {
 		this->name = name;
 
+	}
+	Person(){};
+	Person(const string n, const int a){
+	this->name = n;
+	this->age = a;
 	}
 	string& getName()  { return name; }
+	bool operator <(const Person p)
+	{
+		if ( name < p.name)
+			return true;
+		else
+			return false;
+	}
+	bool operator ==(const Person p)
+	{
+		if (age == p.age)
+			return true;
+		else
+			return false;
+	}
+	friend class Group;
+	friend ostream& operator<<(ostream& out, const Person& p);
 
 private:
 	string name;
@@ -19,16 +41,23 @@ class Person {
 
 };
 
-ostream& operator<<(ostream& out, const Person& p) {
-	cout << p.getName();
+ostream& operator<<(ostream& out, Person& p) {
+	cout << p.getName() ;
 	return out;
 }
 
 
-
 class Group {
 public:
-
+    Group(){};
+    Group(Group& g){
+        cap = g.cap;
+        size = g.size;
+        this->members = new Person[g.cap];
+        for(int i=0; i < size; i++){
+            members[i] = g.members[i];
+        }
+    }
 	Group(int max_lenght)  {
 		this->cap = max_lenght;
 		this->members = new Person[max_lenght];
@@ -46,17 +75,59 @@ class Group {
 		for (i = 0; i < size; i++) {
 			if(members[i].name == name)
 				break;
-			
+
 		}
 		for (int index = i; index < size - 1; index++) {
 			members[index] = members[index + 1];
 		}
 		size--;
 	}
+	Group& operator=(const Group g){
+        this->cap = g.cap;
+		this->size = g.size;
+		this->members = new Person[g.cap];
+		for (int i = 0; i < size; i++) {
+			this->members[i] = g.members[i];
+		}
+		return *this;
+	}
+
+	Group operator+(const Group g){
+        Group outPut(cap + g.cap);
+        int i = 0, j =0;
+        for (; i < size; i++){
+            outPut.members[i] = members[i];
+        }
+        for(; j < g.size; j++){
+            outPut.members[i] = g.members[j];
+            i++;
+        }
+        return outPut;
+	}
+	Group& operator+=(Group g){
+        Person* tmp = new Person[g.cap + cap];
+		int i = 0, j =0;
+		for (; i < size; i++) {
+
+			tmp[i] = members[i];
+		}
+		for (; j < g.size; j++) {
+
+			tmp[i] = members[j];
+			i++;
+		}
+		members = tmp;
+		cap += g.cap;
+		size += g.size;
+		return *this;
+	}
 
 	~Group() {
 		delete[] members;
 	}
+	friend bool isGroupFull(Group g);
+	friend ostream& operator<<(ostream& out, const Group& g);
+	friend class Person;
 
 private:
 	int size;
@@ -68,36 +139,39 @@ class Group {
 bool isGroupFull(Group g) {
 	return (g.size == g.cap);
 }
+ostream& operator<<(ostream& out, const Group& g) {
+	for (int i = 0; i < g.size; i++)
+		out << g.members[i] << "\t";
+	return out;
+}
 
 int main()
 {
-	/*
+
 	Person p1("somename");
-	Person p1("somename2");
-	cout << p1<<p2;
-	*/
-	/*
+	Person p2("somename2");// change it to p2 becouse of redefinition
+	cout << p1<< endl << p2;
+
+
 	Group g1(5);
 	g1.add({ "Erfan",20 });
 	g1.add({ "Saba",20 });
 	g1.add({ "Mahrokh",20 });
 	g1.add({ "Yasin",21 });
 	cout<<isGroupFull(g1)<<endl;
-	*/
-	/*
+
 	Group g2(g1);
 	Group g3(10);
 	g2.deletePerson("Erfan");
 	cout << g1<<endl;//should cout every person in it with a \t as the separator
 	cout << g2 << endl;
-	*/
-	/*
+
 	g3 = g1;
 	cout << g3;
 	g3 =  g2 + g3;//adds members of g2 and g3 to each other
 	g3 += g3 += g3 += g3;
-	*/
-	/*
+
+
 	Person persons[10];
 	Person Erfan("Erfan",20);
 	persons[1]=Erfan;
@@ -107,12 +181,11 @@ int main()
 	sort(persons,persons+10);//what operator should be overloaded for sort? :)
 
 	for(int i=0;i<10;i++){
-		cout<<persons[i].getName()<<' ';
-	}*/
-	/*
-	cout<<*find(persons,persons+10,Erfan);
-	*/
-	
+		cout<<persons[i].getName()<<' ' ;
+	}
+
+	cout << endl <<*find(persons,persons+10,Erfan);
+
 
 
 
diff --git a/2/Score.cpp b/2/Score.cpp
index c107032..4c3763a 100644
--- a/2/Score.cpp
+++ b/2/Score.cpp
@@ -1,12 +1,41 @@
 #include "Score.h"
+int Score::ID_generator = 0;
 
 Score::Score(int score,char* detail, Label label) :ID(Score::ID_generator) {
 	this->score = score;
 	this->label = label;
 	this->detail = detail;
-
 	ID_generator++;
 
 }
+Score::Score():ID(ID_generator) {
+        label = GOOD;
+		score = 0;
+		detail = " ";
+		ID_generator++;
+}
+Score::Score(int s, string d, Label l):ID(ID_generator) {
+		this->score = s;
+		this->detail = d;
+		this->label = l;
+		ID_generator ++;
+
+}
+Score& Score::operator= (const Score& s) {
+		score = s.score;
+		detail = s.detail;
+		label = s.label;
+		return *this;
+}
+void print(const Score& s) {
+	cout << "Score: " << s.score << endl;
+    cout << "Detail: " << s.detail << endl;
+    cout << "Lable: " << s.label << endl;
+    cout << "ID: " << s.ID << endl;
+}
+void setID_generator(int id) {
+	Score::ID_generator = id;
+	return ;
+}
 
 
diff --git a/2/Score.h b/2/Score.h
index 0dd79cb..fb730d4 100644
--- a/2/Score.h
+++ b/2/Score.h
@@ -4,7 +4,6 @@ using namespace std;
 class Score {
 public:
 	friend void print(const Score& score);
-	
 	typedef enum {
 		GREAT,
 		GOOD,
@@ -13,6 +12,11 @@ class Score {
 	}Label;
 
 	Score(int score,  char* detail, Label label);
+	Score();
+    Score(int s, string d, Label l);
+    Score& operator= (const Score& S);
+    friend void setID_generator(int id);
+    friend int main();
 private:
 	int score;
 	Label label;
@@ -20,6 +24,7 @@ class Score {
 	const int ID;
 	static int ID_generator;
 };
-
+void setID_generator(int id);
+void print(const Score& s);
 
 
diff --git a/2/main.cpp b/2/main.cpp
index 64d213e..b5876c4 100644
--- a/2/main.cpp
+++ b/2/main.cpp
@@ -9,11 +9,9 @@ using namespace std;
 #define FOR(n) for(int i=0;i<n;i++)
 #define SETSCORE(i) int score=rand()%20+1;/*no 0s*/\
 scores[i] = Score( score,("some string " + to_string(i)).c_str(),Score::Label(3-score/5)) ;
-
-
 int main()
 {
-	
+
 	srand(time(NULL));
 
 	Score s1(1, "do better next time", Score::BAD);
@@ -26,7 +24,7 @@ int main()
 	FOR(10) {
 		print(scores[i]);
 	}
-	Score::setID_generator(Score::ID_generator+100);//just a setter for ID_generator
+	setID_generator(Score::ID_generator+100);//just a setter for ID_generator
 
 }