SSC Steno Grade C and D 24 Dec 2020 Shift 1 Paper

Maheep starts walking from his office and walks 120 m towards south. Then he turns left and walks a certain distance A m. Then turns right and walks 80 m. Then he turns left and walks another certain distance B m. He there by reaches his home. If the shortest distance between his office and home is 290 m, then what is the sum of the distances A and B that Maheep covered/walked?