Compilare: main.cpp: In function 'int main()': main.cpp:75:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < aux.size(); i++) ~~^~~~~~~~~~~~ main.cpp:81:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < P.size(); i++) { ~~^~~~~~~~~~ main.cpp:84:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < Q.size(); j++) { ~~^~~~~~~~~~ main.cpp:92:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < Q.size(); j++) { ~~^~~~~~~~~~