Compilare: main.cpp: In function 'void search()': main.cpp:19:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 19 | if (comb.size() == k) { | ~~~~~~~~~~~~^~~~ main.cpp:26:60: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for (int i = comb.empty() ? 1 : comb.back() + 1; i <= n + comb.size() - k + 1; ++i) { | ~~^~~~~~~~~~~~~~~~~~~~~~~~~~