#include <set>
#include <map>
#include <vector>
#include <string>
using namespace std;
set<string> str = {"John", "Kelly", "Amanda", "Kim"};
string init[] = { "John", "Kelly", "Amanda", "Kim" };
set<string> str2(init, init + 4);
map<int, string> m = {{1, "a"}, {3, "b"}, {5, "c"}, {7, "d"}};
vector<int> v = {1, 2, 3, 4};