View Compilation Error

0_0_39374607_24779.cpp: In function 'int main()':
0_0_39374607_24779.cpp:35:9: error: 'Ln' has not been declared
   35 |         Ln::main(g,f,MAXN+1);
      |         ^~
0_0_39374607_24779.cpp:36:9: error: 'Mul' has not been declared
   36 |         Mul::main(g,f,h,MAXN+1);
      |         ^~~