Compilare: main.cpp: In function 'bool aleg_tata(int)': main.cpp:19:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int)': main.cpp:40:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<vecini[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp:63:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<=ordine[nod].size(); i++) ~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void solve()': main.cpp:117:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<muchii.size(); i++) ~^~~~~~~~~~~~~~