View Compilation Error

110920_0_20326.cpp: In function `void DFS(int, int, int)':
110920_0_20326.cpp:80: error: `max' undeclared (first use this function)
110920_0_20326.cpp:80: error: (Each undeclared identifier is reported only once for each function it appears in.)
110920_0_20326.cpp: In function `int main()':
110920_0_20326.cpp:103: error: `max' undeclared (first use this function)