#include <iostream>
using namespace std;
int main ()
{
    double a;
    cin>>a;
    if(0<=a&&a<=25)
    printf("Intervalo [0,25]");
    else if(25<a&&a<=50)
    printf("Intervalo (25,50]");
    else if(50<a&&a<=75)
    printf("Intervalo (50,75]");
    else if(75<a&&a<=100)
    printf("Intervalo (75,100]");
    else printf("Fora de intervalo");
    return 0;
}