Cycle detection in directed graphs, topological sort, Kahn’s algorithm. These are the ones that feel simple until you’re implementing them and something quietly goes wrong. Same idea as BFS: try to ...

Hyderabad: For the second time in as many months, rumours of fuel shortage triggered panic buying across the city on Monday, leading to long queues, traffic congestion and tense scenes at several ...

Petrol bunks across districts witnessed long queues on Sunday (April 26, 2026) due to fears of a shortage, forcing management at a few bunks to shut operations. To avoid tension, bunk owners imposed a ...

HYDERABAD: Panic buying of fuel continued for a second consecutive day, with long queues at petrol bunks causing traffic gridlocks across several areas. Some outlets were forced to shut overnight ...

Heathrow was among a number of major airports across Europe hit by delays after a suspected cyber attack that targeted a service provider for check-in and boarding systems. The "technical issue" ...

Portugal and Italy do not plan on exempting British nationals from Europe's new fingerprinting and facial scanning checks, the European Commission has confirmed. Recent reports had suggested the two ...

The central government is preparing to eliminate vehicle dwell times at toll plazas. Multi-lane, free-flow tolling will begin at Chaurasi in Gujarat in May, reducing the ...read more By introducing ...