0_0_5306197_18036.cpp 0_0_5306197_18036.cpp(53) : error C2668: "log" : ??????????? VC\include\math.h(612): ???"long double log(long double)" VC\include\math.h(564): ? "float log(float)" VC\include\math.h(193): ? "double log(double)" ????????"(int)"?