#include<iostream>
using namespace std;
int main(void)
{
    double x;
    cin>>x;
    if(x>=0.0&&x<=25.0)
        cout<<"Intervalo [0,25]"<<endl;
    else if(x>25.0&&x<=50.0)
        cout<<"Intervalo (25,50]"<<endl;
    else if(x>50.0&&x<=75.0)
        cout<<"Intervalo (50,75]"<<endl;
    else if(x>75.0&&x<=100.0)
        cout<<"Intervalo (75,100]"<<endl;
    else 
        cout<<"Fora de intervalo"<<endl;
    return 0;
}