Compilare: main.cpp: In function 'void DFS_N(int)': main.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graf[k].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS_P(int)': main.cpp:38:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < graf[k].size(); i++) { ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void DFS_M(int)': main.cpp:53:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < grafT[k].size(); i++) { ~~^~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:91:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < componente[i].size(); j++) { ~~^~~~~~~~~~~~~~~~~~~~~~