Compilare: main.cpp: In function 'int main()': main.cpp:26:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int j = i; j <= n && k < w.size(); ++j) { | ~~^~~~~~~~~~ main.cpp:29:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | if (k == w.size()) { | ~~^~~~~~~~~~~