#include <iostream>
using namespace std;
 
bool czySamogloska(char c) {
	c = tolower(c);
	return (c == 'a') || (c == 'e') || (c == 'i') || (c == 'o') || (c == 'u') || (c == 'y');
}
 
unsigned int liczSamogloski(std::string str) {
	unsigned int samogloski = 0;
 
	for (char& c: str) {
		if (czySamogloska(c)) {
			samogloski++;
		}
	}
 
	return samogloski;
}
 
int main() {
	std::cout << liczSamogloski("hello") << std::endl;
	std::cout << liczSamogloski("world") << std::endl;
	std::cout << liczSamogloski("PATRYK") << std::endl;
 
	return 0;
}

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