0_0_38378288_9297.cpp: In function 'int main()': 0_0_38378288_9297.cpp:35:2: error: 'Ln' has not been declared Ln::main(g,f,MAXN+1); ^ 0_0_38378288_9297.cpp:36:2: error: 'Mul' has not been declared Mul::main(g,f,h,MAXN+1); ^