#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;
}