#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main() {
vector<string> vec;
vec.push_back("a");
vec.push_back("b");
cout << vec[0] << endl;
cout << vec[10] << endl;
cout << vec[1] << endl;
// your code goes here
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgojaW5jbHVkZSA8dmVjdG9yPgojaW5jbHVkZSA8c3RyaW5nPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7Cgl2ZWN0b3I8c3RyaW5nPiB2ZWM7Cgl2ZWMucHVzaF9iYWNrKCJhIik7Cgl2ZWMucHVzaF9iYWNrKCJiIik7Cgljb3V0IDw8IHZlY1swXSA8PCBlbmRsOwoJY291dCA8PCB2ZWNbMTBdIDw8IGVuZGw7Cgljb3V0IDw8IHZlY1sxXSA8PCBlbmRsOwoJLy8geW91ciBjb2RlIGdvZXMgaGVyZQoJcmV0dXJuIDA7Cn0=