Compilare: main.cpp: In function 'void DFS(int, int)': main.cpp:51:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < G[node].size(); i++){ ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void precalcEdges()': main.cpp:79:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < G[i].size(); j++){ ~~^~~~~~~~~~~~~ main.cpp: In function 'void precalcMars()': main.cpp:115:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < Return[i].size(); j++){ ~~^~~~~~~~~~~~~~~~~~