#include <iostream>
using namespace std;
/**
    0- sir neordonat
    1- sir constant
    2- strict cresc
    3- sir cresc
    4 - sir strict desc
    5-sir desc
*/
int main()
{
    int  a[1001],n,i,cod=0;
    /// citire
    cin>>n;
    for(i=1; i<=n; i++)cin>>a[i];

    if(a[1]<a[2])
    {
        cod=2;
        for(i=2; i<n; i++)
            if(a[i]>=a[i+1]) cod=0;
    }
    if(a[1]>a[2] && cod==0)
    {
        cod=4;
        for(i=2; i<n&&cod!=0; i++)
            if(a[i]<=a[i+1])cod=0;
    }
    if(a[1]==a[2] && cod==0)
    {
        cod=1;
        for(i=2; i<n && cod!=0; i++)
            if(a[i]!=a[i+1]) cod=0;
    }
    if(a[1]<=a[2]&& cod==0)
    {
        cod=3;
        for(i=2; i<n&& cod!=0; i++)
            if(a[i]>a[i+1]) cod=0;
    }
    if(a[1]>=a[2] && cod==0)
    {
        cod=5;
        for(i=2; i<n && cod!=0; i++)
            if(a[i]<a[i+1])cod=0;
    }
    if(cod==0)cout<<"sir neordonat";
    if(cod==1)cout<<"sir constant";
    if(cod==2)cout<<"sir strict crescator";
    if(cod==3)cout<<"sir crescator";
    if(cod==4)cout<<"sir strict descrescator";
    if(cod==5)cout<<"sir descrescator";
    return 0;
}