#include<bits/stdc++.h>
using namespace std;
int main()
{
    int a,b,c;
    cin >> a >> b >> c;
    
    bool is_triangle = false;
    
    if((a+b)>c) is_triangle = true;
    else if ((a+b)>c) is_triangle = true;
    else if ((b+c)>c) is_triangle = true;
    
    if is_triangle
    {
        if (a==b==c)
        {
            cout<<"Eqi";
            return 0;
        }
        else if (a==b || b==c || a==c)
        {
            cout<<"Iso";
            return 0;
        }
        else
        {
            cout<<"Sca";
            return 0;
        }
    }
    cout<<"Invalid";
    
}