Compilare: main.cpp: In function 'int main()': main.cpp:83:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < edges.size(); i ++) ~~^~~~~~~~~~~~~~ main.cpp:105:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < v.size(); i ++) ~~^~~~~~~~~~