#include <iostream>
using namespace std;
int main() {
int a, b, c, d;
cin >> a >> b >> c >> d;
if ((a >= b && b >= c) || (c >= d && d >= a)) {
cout << "Descrescator";
} else if ((a <= b && b <= c) || (c <= d && d <= a)) {
cout << "Crescator";
} else if ((a != b && b != c) || (c != d && d != a)) {
cout << "Nemonoton";
}
return 0;
}
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