Compilare: main.cpp: In function 'int main()': main.cpp:87:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<prop.size() && !gasit; i++) ~^~~~~~~~~~~~ main.cpp:121:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<prop.size(); i++) ~^~~~~~~~~~~~ main.cpp:127:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=i+1; j<prop.size(); j++) ~^~~~~~~~~~~~