View Compilation Error

232175_0_19629.cpp:4: error: `max' was not declared in this scope
232175_0_19629.cpp: In function `int main()':
232175_0_19629.cpp:27: error: `A' undeclared (first use this function)
232175_0_19629.cpp:27: error: (Each undeclared identifier is reported only once for each function it appears in.)