View Compilation Error

0_0_9796428_1086.cpp: In function `void bfs(int, int)':
0_0_9796428_1086.cpp:13: error: `max' undeclared (first use this function)
0_0_9796428_1086.cpp:13: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9796428_1086.cpp: In function `int find()':
0_0_9796428_1086.cpp:47: error: `max' undeclared (first use this function)
0_0_9796428_1086.cpp: In function `int main()':
0_0_9796428_1086.cpp:61: error: `max' undeclared (first use this function)