combo.cpp: In function 'std::string guess_sequence(int)':
combo.cpp:42:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
42 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:42:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
42 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:44:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:44:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:44:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
44 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"B")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:55:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:55:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
55 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:57:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
57 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:57:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
57 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:57:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
57 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:67:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
67 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:67:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
67 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:69:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
69 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:69:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
69 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:69:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
69 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~
combo.cpp:79:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
79 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:79:45: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
79 | if(a==s.size()+2 || (i==n-1 && a==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:81:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
81 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~^~~~~~~~~~~~
combo.cpp:81:50: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
81 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~^~~~~~~~~~
combo.cpp:81:76: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
81 | else if(a==s.size()+1 || (i==n-1 && a==s.size() && press(s+"A")==s.size()+1))
| ~~~~~~~~~~~~^~~~~~~~~~~~