#include<stdio.h>
int main()
{
    int n1,n2,n3;
    scanf("%d %d %d",&a,&b,&c);
    if(n1==n2==n3)
        printf("Equilateral");
    else if(n1==n2 || n2==n3|| m3==n1)
        printf("Isosceles");
    else
        printf("Scalene");
}