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