#include<stdio.h>
int main()
}
int a,b,c;
scanf("%d %d %d", &a, &b, &C);
if(a <= 0 || b <= 0 || c <= 0 || a >100 || b>100 || c>100) {
    printf("Invalid Input\n");
}
    else if ((a + b <= c) || (a + b <=b) || (b + c <= a)) {
    printf("Invalid Input\n");
else if(a == b && b == c)
{
    printf("Equilateral\n");
}
else if(a == b || b == c || a == c)
{
    printf("Isoceles\n");
}
else
{
    printf("Scalene\n");
}
return 0;
}