combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:32:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
32 | if(a==s.size()+2)
| ~^~~~~~~~~~~~
combo.cpp:34:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:34:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:34:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
34 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:45:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
45 | if(a==s.size()+2)
| ~^~~~~~~~~~~~
combo.cpp:47:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:47:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:47:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
47 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:57:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
57 | if(a==s.size()+2)
| ~^~~~~~~~~~~~
combo.cpp:59:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:59:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:59:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
59 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:69:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
69 | if(a==s.size()+2)
| ~^~~~~~~~~~~~
combo.cpp:71:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
71 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:71:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
71 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:71:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
71 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~