#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("Equliateral");
    
}
else if (a == b || b == c || a == c){
    printf("Isoceles");
}
else{
    printf("Scalene");
}
return 0;
}