View Compilation Error

0_0_10206488_1269.cpp: In function `void bfs(int, int, bool*, std::vector<int, std::allocator<int> >*)':
0_0_10206488_1269.cpp:61: error: `s' undeclared (first use this function)
0_0_10206488_1269.cpp:61: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10206488_1269.cpp:61: error: expected `;' at end of input
0_0_10206488_1269.cpp:61: error: expected `}' at end of input