View Compilation Error

0_0_29460448_7833.cpp:70:1: error: stray '\310' in program
 然后是BFS
 ^
0_0_29460448_7833.cpp:70:1: error: stray '\273' in program
0_0_29460448_7833.cpp:70:1: error: stray '\272' in program
0_0_29460448_7833.cpp:70:1: error: stray '\363' in program
0_0_29460448_7833.cpp:70:1: error: stray '\312' in program
0_0_29460448_7833.cpp:70:1: error: stray '\307' in program
0_0_29460448_7833.cpp:69:1: error: expected unqualified-id before '?' token
 ?
 ^