Notice: Use of undefined constant INF - assumed 'INF' in /in/cOjZd on line 3
Notice: Use of undefined constant INF - assumed 'INF' in /in/cOjZd on line 3
bool(true)
Notice: Use of undefined constant INF - assumed 'INF' in /in/cOjZd on line 4
Notice: Use of undefined constant INF - assumed 'INF' in /in/cOjZd on line 4
bool(true)