View Compilation Error

56127_0_29419.cpp: In function `void DFS(int, int, int)':
56127_0_29419.cpp:41: error: `max' undeclared (first use this function)
56127_0_29419.cpp:41: error: (Each undeclared identifier is reported only once for each function it appears in.)
56127_0_29419.cpp: In function `int main()':
56127_0_29419.cpp:69: error: `max' undeclared (first use this function)