Compilare: main.cpp: In function 'void afis()': main.cpp:88:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (sol.size() == k) ~~~~~~~~~~~^~~~ main.cpp:93:47: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i > sol[aux].second && aux < sol.size()) ~~~~^~~~~~~~~~~~ main.cpp:102:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (aux < sol.size()) ~~~~^~~~~~~~~~~~ main.cpp:104:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = aux; i < sol.size(); i++) ~~^~~~~~~~~~~~ main.cpp:117:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i > sol[aux].first && aux < sol.size()) ~~~~^~~~~~~~~~~~ main.cpp:133:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (aux < sol.size()) ~~~~^~~~~~~~~~~~