#include <iostream>
#include <vector>
using namespace std;
int main() {
// your code goes here
vector<int> vec;
vec.push_back(10);
for(int i = 0; i < vec.size(); i++){
cout << vec.back() << endl;
}
cout << vec.size() << endl;
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8dmVjdG9yPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlCgkKCXZlY3RvcjxpbnQ+IHZlYzsKCXZlYy5wdXNoX2JhY2soMTApOwoJCglmb3IoaW50IGkgPSAwOyBpIDwgdmVjLnNpemUoKTsgaSsrKXsKCQljb3V0IDw8IHZlYy5iYWNrKCkgPDwgZW5kbDsKCX0KCWNvdXQgPDwgdmVjLnNpemUoKSA8PCBlbmRsOwoJCglyZXR1cm4gMDsKfQ==