/in/foo.cc: In function 'int main()':
/in/foo.cc:52:21: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   52 |                 if(k<v[m-t].size())ans=min(ans,abs(tot-(sum+v[m-t][k])*2));
      |                    ~^~~~~~~~~~~~~~