View Compilation Error

281919_0_18230.cpp: In function `void DFS(int, int, int)':
281919_0_18230.cpp:79: error: `max' undeclared (first use this function)
281919_0_18230.cpp:79: error: (Each undeclared identifier is reported only once for each function it appears in.)
281919_0_18230.cpp: In function `int main()':
281919_0_18230.cpp:102: error: `max' undeclared (first use this function)