Untitled

#include <iostream>
using namespace std;

void yourKoresh(int age) {
	int key=0;
	if (age > 10) {
		key = 1;
	}
	if (age > 20) {
		key = 2;
	}
	if (age > 30) {
		key = 3;
	}
	if (age > 40) {
		key = 4;
	}
	switch (key) {
	case 1: cout << "moldoy";
		break;
	case 2: cout << "bivaliy";
		break;
	case 3: cout << "starche";
		break;
	case 4: cout << "ne bivaet";
		break;
	default: cout << "perec";
	}
}
int main()
{
	int x;
	cin >> x;
	yourKoresh(x);
}