Compilare: main.cpp: In function 'int main()': main.cpp:56:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < grupe.size(); i++) ~~^~~~~~~~~~~~~~ main.cpp:70:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < reteta.size(); j++) ~~^~~~~~~~~~~~~~~ main.cpp:105:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ingrediente.size(); i++) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:122:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < ingrediente.size(); i++) ~~^~~~~~~~~~~~~~~~~~~~