#include<stdio.h>
int main(){
    int n1,n2,n3;
    scanf("%d",&n1);
    scanf("%d",&n2);
    scanf("%d",&n3);
    if(n1==n2&&n2==n3)
    printf("Equilateral\n");
    if(n1==n2||n2==n3||n3==n1);
    printf("Isoceles\n");
    else(n1!=n2&&n2!=n3)
    printf("Scalene\n");
    return 0;
}