#include <iostream>
#include <set>
#include <algorithm>
#include <vector>
using namespace std;
int main() {
// your code goes here
std::multiset<int> a {1,2,3};
std::multiset<int> b {1,2,3};
std::multiset<int> result;
merge( a.begin(), a.end(), b.begin(), b.end(),
std::inserter(result, result.begin()));
std::cout<<result.size()<<std::endl;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8c2V0PgojaW5jbHVkZSA8YWxnb3JpdGhtPgojaW5jbHVkZSA8dmVjdG9yPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlCglzdGQ6Om11bHRpc2V0PGludD4gYSB7MSwyLDN9OwoJc3RkOjptdWx0aXNldDxpbnQ+IGIgezEsMiwzfTsKCQoJc3RkOjptdWx0aXNldDxpbnQ+IHJlc3VsdDsKCW1lcmdlKCBhLmJlZ2luKCksIGEuZW5kKCksIGIuYmVnaW4oKSwgYi5lbmQoKSwgIAoJc3RkOjppbnNlcnRlcihyZXN1bHQsIHJlc3VsdC5iZWdpbigpKSk7CglzdGQ6OmNvdXQ8PHJlc3VsdC5zaXplKCk8PHN0ZDo6ZW5kbDsKCXJldHVybiAwOwp9