#include <iostream>

using namespace std;

float x1,x2,x3,x4,y1,y2,y3,y4;

void Citire()
{
    cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
}
int ecuatii(int x1,int y1,int x2,int y2)
{
    if(x1 == x4 && y1 == y4 || x2 == x4 && y2 == y4 || x3 == x4 && y3 == y4)
    {
        cout << "Se afla pe unul din varfuri";
        return 2;
    }
    else
    {
    int a = y1 - y2;
    int b = x2 - x1;
    int c = (x1*y2)-(y1*x2);
    int h = a*x4 + b*y4 + c;
    if(h == 0)
    {
        cout << "Coliniar";
        return 0;
    }
    else
        if(h < 0)
            return -1;
        else
            return 1;
    }

}
int main()
{
    Citire();
    if(ecuatii(x1,y1,x2,y2) != 0 && ecuatii(x1,y1,x2,y2) != 2)
    int pn=0,sn=0;
    if(ecuatii(x1,y1,x2,y2) == 1)
        pn++;
    else if(ecuatii(x1,y1,x2,y2) == -1)
        sn++;
    if(ecuatii(x2,y2,x3,y3))
        pn++;
    else if(ecuatii(x2,y2,x3,y3) == -1)
        sn++;
    if(ecuatii(x1,y1,x3,y3))
        pn++;
    else if(ecuatii(x1,y1,x3,y3) == -1)
        sn++;
    if(sn + pn > 2)
    if(sn == 1 && pn == -2)
        cout << "E in interiorul triunghiului\n";
    else cout << "E in afara triunghiului\n";
    return 0;
}