View Compilation Error

85410_0_189.cpp: In function `void dfs(int, int, int&)':
85410_0_189.cpp:12: error: `max' undeclared (first use this function)
85410_0_189.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
85410_0_189.cpp: In function `int main()':
85410_0_189.cpp:53: error: `max' undeclared (first use this function)