#include<iostream>
using namespace std;
int main()
{
	int n,a,b,c,d;
	cin>>n;
	b=0;
	c=0;
	d=0;
	while(n>9)
	{
		a=n%10;
		n/=10;
		if(a<n%10)
			b++;
		if(a>n%10)
			c++;
		d++;
	}
	if(b==d)
		cout<<"descrescator";
	else
		if(c==d)
			cout<<"crescator";
		else
			cout<<"nu e ordonat";
	return 0;
}