#include<stdio.h>
int main()
int a,b,c;
scanf("%d %d %d", &a,&b,&c);
if(a<=0 || b<=0 || c<=0){
    printf("Invalid input");}
    else if(a==b && b==c){
        printf("Equilateral");}
        else if(a==b || b==c || a==c){
            printf("Isoceles");}
            else{
                printf("Scalence");
            }
            return 0;
            }