Compilare: main.cpp: In function 'void ins(str*, int)': main.cpp:26:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | if (poz == s.size()) | ~~~~^~~~~~~~~~~ main.cpp: In function 'int dfs(str*, int, int)': main.cpp:43:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 43 | if (poz == s.size()) | ~~~~^~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:99:22: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 99 | if (s.size() != x * (k + 1)) | ~~~~~~~~~^~~~~~~~~~~~~~