Mã chấm: 269508

Main.cc: In function ‘int main()’:
Main.cc:8:14: error: ‘pow’ was not declared in this scope
     while(e>=pow(10,-6))
              ^~~
Main.cc:8:14: note: suggested alternative: ‘putw’
     while(e>=pow(10,-6))
              ^~~
              putw