Compilare: main.cpp: In function 'void dfs(int)': main.cpp:32:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graf[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:115:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < masini.size(); i++) ~~^~~~~~~~~~~~~~~ main.cpp:123:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 1; j < masini[i].size(); j++) ~~^~~~~~~~~~~~~~~~~~