Compilare: main.cpp: In function 'void dfs(int)': main.cpp:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < mat[node].size(); ++i) ~~^~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:68:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < componente[i].size(); ++j) ~~^~~~~~~~~~~~~~~~~~~~~~