Compilare: main.cpp: In function 'int main()': main.cpp:66:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 66 | for (int aux1 = 1; aux1 <= s.length(); aux1++) | ~~~~~^~~~~~~~~~~~~ main.cpp:68:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 68 | for (int aux2 = 1; aux2 <= s.length(); aux2++) | ~~~~~^~~~~~~~~~~~~ main.cpp:79:30: warning: array subscript has type 'char' [-Wchar-subscripts] 79 | litere[v[i][j]] = pereche{i, j}; | ~~~~~~^ main.cpp:90:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for (int i = 0; i < s.length(); i++) | ~~^~~~~~~~~~~~ main.cpp:92:35: warning: array subscript has type 'char' [-Wchar-subscripts] 92 | q.push(pereche{litere[s[i]].x, litere[s[i]].y}); | ^ main.cpp:92:51: warning: array subscript has type 'char' [-Wchar-subscripts] 92 | q.push(pereche{litere[s[i]].x, litere[s[i]].y}); | ^ main.cpp:97:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for (int lungime = 2; lungime <= s.length(); lungime++) | ~~~~~~~~^~~~~~~~~~~~~ main.cpp:99:41: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 99 | for (int i = 1; i + lungime - 1 <= s.length(); i++) | ~~~~~~~~~~~~~~~~^~~~~~~~~~~~~