Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:34:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (u = 0; u < graf[v].size(); u++) { ~~^~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:90:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < graf[i].size(); j++) { ~~^~~~~~~~~~~~~~~~ user.cpp:102:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < critice.size(); i++) { ~~^~~~~~~~~~~~~~~~ user.cpp:106:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j = 0; j < graf[pVerif].size(); j++) { ~~^~~~~~~~~~~~~~~~~~~~~