View Compilation Error

0_0_20207946_19567.cpp: In function 'int bfs()':
0_0_20207946_19567.cpp:135:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_20207946_19567.cpp:160:1: error: expected '}' at end of input
 }
 ^