Run id: 82511

Main.cc: In function 'int main()':
Main.cc:7:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i::operator=, std::allocator >(s2)' from 'std::__cxx11::basic_string' to 'bool'
  if(s1=s2) {
          ^