#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
using namespace std;

int main() {
	std::string s("hello");
    std::vector<int> foo;
	std::transform(s.begin(), s.end(), back_inserter(foo), ::toupper);
	std::cout << std::string(foo.begin(), foo.end());
	return 0;
}