View Compilation Error

0_0_7822959_32757.cpp: In function `void Dfs(int, int, int)':
0_0_7822959_32757.cpp:15: error: `max' undeclared (first use this function)
0_0_7822959_32757.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7822959_32757.cpp: In function `int main()':
0_0_7822959_32757.cpp:32: error: `max' undeclared (first use this function)