/in/foo.cc: In function 'int main()':
/in/foo.cc:15:49: error: 'ans' was not declared in this scope; did you mean 'abs'?
   15 |                                         if(cost<ans) ans=cost;
      |                                                 ^~~
      |                                                 abs
/in/foo.cc:18:9: error: 'cotu' was not declared in this scope
   18 |         cotu<<ans;
      |         ^~~~
/in/foo.cc:18:15: error: 'ans' was not declared in this scope; did you mean 'abs'?
   18 |         cotu<<ans;
      |               ^~~
      |               abs