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