/in/foo.cc: In function 'int main()':
/in/foo.cc:49:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 |   for(int i=0;i<jjcc.size();++i)
      |               ~^~~~~~~~~~~~
/in/foo.cc:16:13: warning: unused variable 't' [-Wunused-variable]
   16 |         int t=0;
      |             ^