View Compilation Error

56100_0_7785.cpp: In function `void DFS(int, int, int)':
56100_0_7785.cpp:41: error: `max' undeclared (first use this function)
56100_0_7785.cpp:41: error: (Each undeclared identifier is reported only once for each function it appears in.)
56100_0_7785.cpp: In function `int main()':
56100_0_7785.cpp:67: error: `max' undeclared (first use this function)