#include <iostream>
using namespace std;

int main() {
    int n = 1, copy_n, ascend = 0, descend = 0;
    cin >> copy_n;

    while (n != 0) {
        cin >> n;
        if (copy_n - n < 0) {
            ++ascend;
        } else if (copy_n - n > 0) {
            ++descend;
        }
        copy_n = n;
    }
    if (ascend > 0 && descend == 0) {
        cout << "crescator";
    } else if (descend > 0 && ascend == 0) {
        cout << "descrescator";
    } else {
        cout << "nemonoton";
    }

return 0;
}