#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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