#include<stdio.h>
int main(){
    int a,b,c;
    scanf("%d",&a);
    scanf("%d",&b);
    scanf("%d",&c);
    if(a!=b!=c)
    printf("Scalene");
    if(a==b)(b!=c)(a==c);
    printf("Isosceles");
    if(a==b)(b==c)(a!=c);
    printf("Isosceles");
    if(a==b==c);
    printf("Equilateral");
}