/in/foo.cc: In function 'int main()':
/in/foo.cc:6:2: error: 'cin' was not declared in this scope
  cin>>a;
  ^~~
/in/foo.cc:12:8: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  if(a^3+b^3+c^3==f)
       ~^~
/in/foo.cc:12:12: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
  if(a^3+b^3+c^3==f)
           ~^~
/in/foo.cc:12:16: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses]
  if(a^3+b^3+c^3==f)
               ~^~~
/in/foo.cc:13:3: error: 'cout' was not declared in this scope
   cout<<"Y";
   ^~~~
/in/foo.cc:15:3: error: 'cout' was not declared in this scope
   cout<<"N"
   ^~~~
/in/foo.cc:5:15: warning: unused variable 'd' [-Wunused-variable]
     int a,b,c,d,f;
               ^