#include<stdio.h>
int main()
{
    int a,b,c;
    scanf("%d",&a);
    scanf("%d",&b);
    scanf("%d",&c);
    printf("Equilateral\n",a);
    printf("Isosceles \n",b);
    printf("Scalene\n",c);
    printf("Invalid Input\n");
    return 0;
}