/in/foo.cc: In function 'int main()':
/in/foo.cc:20:57: error: 'ans' was not declared in this scope; did you mean 'abs'?
   20 |                                         if(full==s1+sum)ans=min(ans,full-now);
      |                                                         ^~~
      |                                                         abs
/in/foo.cc:22:15: error: 'ans' was not declared in this scope; did you mean 'abs'?
   22 |         cout<<ans;
      |               ^~~
      |               abs