What happens when you attempt to compile and run the following code?

What happens when you attempt to compile and run the following code?

#include

#include

#include

#include

using namespace std;

class B { int val;

public:

B(int v):val(v){}

int getV() const {return val;} bool operator > (const B & v) const { return val>v.val;} };

ostream & operator <<(ostream & out, const B & v) { out<

templatestruct Out {

ostream & out; Out(ostream & o): out(o){}

void operator() (const T & val ) { out<

int main() {

int t[]={20, 30, 10, 20, 30, 10, 20, 30, 10, 20};

deque d1(t, t+10);

sort(d1.begin(), d1.end(), greater());

pair ::iterator, deque::iterator > result = equal_range(d1.begin(), d1.end(), B(20), greater());

for_each(result.first, result.second, Out(cout));cout<

return 0;

}

Program outputs: