Compilare: main.cpp: In function 'int main()': main.cpp:92:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < origin.size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:105:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int h = 0; h < g[node].size(); h++) { ~~^~~~~~~~~~~~~~~~