Compilare: main.cpp: In function 'void solve(int, int, int)': main.cpp:47:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<ed[nod].size();i++) ~^~~~~~~~~~~~~~~ main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<avem[l].size();i++) ~^~~~~~~~~~~~~~~ main.cpp:53:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<vrem[l].size();i++) ~^~~~~~~~~~~~~~~