#include <iostream>using namespace std;
int main() { int xa, ya, xb, yb, xc, yc, determinant=0; cin>>xa; cin>>ya; cin>>xb; cin>>yb; cin>>xc; cin>>yc; determinant=xa*yb+ya*xc+xb*yc-xc*yb-xa*yc-ya*xb; if(determinant==0) cout<<" punctele sunt coliniare "; else cout<<" punctele nu sunt coliniare "; return 0;}