};
collect::collect(){
length=0;
array[size];
}
collect::collect(int n){
int i;

length=n;
for(i=0;i<length;i++)
{cout<<"enter the element:";
cin>>array[i];
}
}
collect operator+( collect &d,collect &c)
{
collect a;
for(int i=0;i<d.length;i++)
a.array[a.length++]=d.array[i];
for(int j=0;j<c.length;j++)
{ for(int k=0;k<d.length; k++)
if(c.array[j]==d.array[k])
break;
if(k==d.length)
a.array[a.length++]=c.array[j]; }

return a;
}

collect operator*( collect &d,collect &c)
{
collect a;
int i,j;

a.length=0;
for(i=0;i<c.length;i++)
for(j=0;j<d.length;j++)
if(c.array[i]==d.array[j])
{a.array[a.length++]=d.array[j];
break;
}
return a;

}
collect operator-(collect &d, collect &c)
{ collect a,b;
b=d;

int i,j,k;
for(j=0;j<c.length;j++)
for(k=0;k<b.length;k++)
if(c.array[j]==b.array[k])
{ for(i=k;i<b.length;i++)
b.array[i]=b.array[i+1];
b.array[i]=0;
b.length--;
break;}

a=b;

return a;
}
collect &collect::operator=( collect &c)
{
int i; length=c.length;
for(i=0;i<c.length;i++)
array[i]=c.array[i] ;
return *this;
}

void collect::deleted(int n)
{
int j, i;
for(i=0;i<length;i++)
if(array[i]==n)
{ for(j=i;j<length;j++)
array[j]=array[j+1];
array[j]=0;
length--;
break;}
if(i==length)
cout<<"no"<<endl;
length;

}
void collect::insert(int n)
{
int i;
for(i=0;i<length;i++)
if(array[i]==n)
break;
if(i<length)
cout<<"yes"<<endl;
else
array[length++]=n;

}

void collect::display()
{cout<<"there have"<<" "<<length<<" "<<"elements" <<endl;
int i;
for(i=0;i<length;i++)
{
if(i%5==0)
cout<<endl<<array[i]<<" ";
}
cout<<endl;
}

void main()
{ int a,b,c,d;
cout<<"enter the length of collect1:";
cin>>a;
while(a>size)
{cout<<"enter the length of collect1:";
cin>>a;}
cout<<endl;
collect collect1(a) ;
collect1.display();
cout<<"enter the length of collect2:";
cin>>b;
while(b>size)
{cout<<"enter the length of collect2:";
cin>>b;}
cout<<endl;
collect collect2(b);
collect2.display();
collect collect5,collect3,collect4;
cout<<"collect3=collect1-collect2";
cout<<endl;
collect3=collect1-collect2;
collect3.display();
cout<<"collect4=collect1+collect2";
cout<<endl;
collect4=collect1+collect2;
collect4.display();
cout<<"collect5=collect1*collect2";
cout<<endl;
collect5=collect1*collect2;
collect5.display();
cout<<"enter the insert element:";
cin>>c;
collect1.insert(c);
collect1.display();
cout<<"enter the delete element:";
cin>>d;
collect1.deleted(d);
collect1.display();
}