Compilare: main.cpp: In function 'int main()': main.cpp:31:63: warning: comparison of integer expressions of different signedness: 'std::vector<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 31 | while (!v.empty() && c > v.back() && n - k + v.size() >= m) | ~~~~~~~~~~~~~~~~~^~~~ main.cpp:35:22: warning: comparison of integer expressions of different signedness: 'std::vector<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 35 | if (v.size() < m) | ~~~~~~~~~^~~