View Compilation Error

0_0_6592387_4542.cpp:146:1: pasting "/" and "/" does not give a valid preprocessing token
0_0_6592387_4542.cpp: In function `void bfs()':
0_0_6592387_4542.cpp:146: error: expected primary-expression before '/' token
0_0_6592387_4542.cpp:146: error: expected primary-expression before '/' token