Compilare: user.cpp: In function ‘int bfs()’: user.cpp:51:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[nod].size(); i++) { ^ user.cpp: In function ‘void dfs(int)’: user.cpp:65:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[nod].size(); i++) { ^ user.cpp: In function ‘int main()’: user.cpp:79:39: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < G[n].size(); i++) { ^