Notice: Use of undefined constant INF - assumed 'INF' in /in/Q3EqO on line 2
string(3) "INF"
Notice: Use of undefined constant INF - assumed 'INF' in /in/Q3EqO on line 3
int(0)
Notice: Use of undefined constant INF - assumed 'INF' in /in/Q3EqO on line 4
bool(true)