#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 + c <=b) || (b + c <= a)) {
        print("Invalid Input\n");
    }
    else if (a== b && b == c) {
        printf("Equilateral\n");
    }
    else if (a == b ||  b == c || a == c) {
        printf("Isosceles\n");
    }
    else {
        printf("Scaleme\n");
    }
    
    reeturn 0;
}