What is the output?

#include

#include

using namespace std;

int main$()$

$\{$

vector vect$1(3)$;

vector vect$2(5)$;

vect$2=$ vect$1$;

vect$1=$ vector$()$;

cout $<<$ int$($vect$1.$size$())<<""<<$ int$($vect$2.$size$())<<$ endl;

return $0$;

$\}$