Compilare: main.cpp: In function 'void dfs(int)': main.cpp:18:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < lista[nod].size(); i++) ~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:51:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < comp[1].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:61:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; ok && i < comp[2].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:69:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < comp[2].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:78:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; ok && i < comp[2].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:86:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < comp[2].size(); i++) ~~^~~~~~~~~~~~~~~~ main.cpp:105:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < lista[i].size(); j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:115:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < lista[i].size(); j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:120:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < lista[i].size(); j++) ~~^~~~~~~~~~~~~~~~~