Compilare: main.cpp: In instantiation of 'main()::<lambda(auto:11)> [with auto:11 = main()::<lambda(auto:11)>]': main.cpp:43:17: required from here main.cpp:26:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 26 | if (solution.size() == k) { | ~~~~~~~~~~~~~~~~^~~~ main.cpp:32:46: warning: suggest parentheses around '&&' within '||' [-Wparentheses] 32 | if (solution.empty() || !used[i] && solution.back() < i) { | ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~