// editor1
#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("Eqilateral");
}
else if(a == b || b == c || a == c) {
    printf("Isosceles");
}
else {
    printf("Scalene");
}
return 0;
}