Compilare: main.cpp: In function 'void dfs(int)': main.cpp:22:22: 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:59:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z = 0; z < graf[0].second.size(); ++z) ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:72:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z = 1; z < graf[i].second.size(); ++z) ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:87:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int z = 0; z < graf[i].second.size(); ++z) ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp:101:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < laturi.size(); ++i) ~~^~~~~~~~~~~~~~~