#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;
}
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