#include<stdio.h>
int main()
{
    int n1,n2,n3;
    scanf("%d",&n1);
    scanf("%d",&n2);
    scanf("%d",&n3);
    if(n1==n2 and n2==n3 and n3==n1);
    printf("Equilateral %d \n");
    elif(n1==n2 or n2==n3 or n3==n1);
    printf("Isosceles %d \n");
    else(n1!=n2 and n2!=n3 and n3!=n1);
    printf("Scalene"," %d \n");
}