0_0_8062632_5578.cpp: In function `void BFS()':
0_0_8062632_5578.cpp:28: error: `vis' undeclared (first use this function)
0_0_8062632_5578.cpp:28: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8062632_5578.cpp:56: error: expected `;' before "Que"
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