Compilare: main.cpp: In function 'int main()': main.cpp:232:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k = 0; k < valide.size(); k++) ~~^~~~~~~~~~~~~~~ main.cpp:258:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < sfarsit.size(); i++) ~~^~~~~~~~~~~~~~~~