Compilare: main.cpp:95:49: warning: multi-character character constant [-Wmultichar] 95 | x2.insert(x2.size(), 2, '11'); | ^~~~ main.cpp:101:49: warning: multi-character character constant [-Wmultichar] 101 | x1.insert(x1.size(), 2, '00'); | ^~~~ main.cpp:131:65: warning: multi-character character constant [-Wmultichar] 131 | x1.insert(x1.size(), 2, '00'); | ^~~~ main.cpp:148:57: warning: multi-character character constant [-Wmultichar] 148 | x1.insert(0, 2, '00'); | ^~~~ main.cpp:151:69: warning: multi-character character constant [-Wmultichar] 151 | x1.insert(x1.size() - 1, 2, '00'); | ^~~~ main.cpp: In function 'void solve()': main.cpp:81:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | if ((unu == 1 && unu + zero == s.size() && s.size() % 2 == 1) || (zero == s.size())) | ~~~~~~~~~~~^~~~~~~~~~~ main.cpp:81:80: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 81 | if ((unu == 1 && unu + zero == s.size() && s.size() % 2 == 1) || (zero == s.size())) | ~~~~~^~~~~~~~~~~ main.cpp:85:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | if (unu == s.size()) | ~~~~^~~~~~~~~~~ main.cpp:95:49: warning: overflow in conversion from 'int' to 'char' changes value from '12593' to ''1'' [-Woverflow] 95 | x2.insert(x2.size(), 2, '11'); | ^~~~ main.cpp:101:49: warning: overflow in conversion from 'int' to 'char' changes value from '12336' to ''0'' [-Woverflow] 101 | x1.insert(x1.size(), 2, '00'); | ^~~~ main.cpp:131:65: warning: overflow in conversion from 'int' to 'char' changes value from '12336' to ''0'' [-Woverflow] 131 | x1.insert(x1.size(), 2, '00'); | ^~~~ main.cpp:148:57: warning: overflow in conversion from 'int' to 'char' changes value from '12336' to ''0'' [-Woverflow] 148 | x1.insert(0, 2, '00'); | ^~~~ main.cpp:151:69: warning: overflow in conversion from 'int' to 'char' changes value from '12336' to ''0'' [-Woverflow] 151 | x1.insert(x1.size() - 1, 2, '00'); | ^~~~