View Compilation Error

0_0_4481809_7066.cpp: In function `std::string bfs(int, int, int, int)':
0_0_4481809_7066.cpp:31: error: expected `;' at end of input
0_0_4481809_7066.cpp:31: error: expected `}' at end of input
0_0_4481809_7066.cpp:31: error: expected `}' at end of input
0_0_4481809_7066.cpp:31: error: expected `}' at end of input