#include <stdio.h>
int main()
{
    float N;
    scanf("%f",&N);
    if (N>=0 && N<=25)
    {
        printf("Intervalo (0,25]\n");
    } else if (N>25 && N<=50)
    {
        printf("Intervalo (25,50]\n");
    }else if (N>50 && N<=75)
    {
        printf("Intervalo (50,75]\n");
    }else if (N>75 && N<=100)
    {
        printf("Intervalo (75,100]\n");
    } else
    {
        printf("Fora de intervalo\n");
    }
    return 0;
}