#include <iostream>
using namespace std; // consider removing this line in serious projects

int main() {
	int nr1, nr2, nr3, nr4; 
	cin >> nr1 >> nr2 >> nr3 >> nr4; //Citesc patru variabile de la tastiera
	
	if (nr1 == nr2 && nr3 == nr4 && nr2 == nr3) {
		cout << "Nemonoton";
	}
	else if (nr1 <= nr2 && nr3 <= nr4 && nr2 <= nr3) {
		cout << "Crescator";
	}
	else if (nr1 >= nr2 && nr3 >= nr4 && nr2 >= nr3) {
		cout << "Descrescator";
	}else{
		cout << "Nemonoton";
	}
	return 0;
}