Compilare: main.cpp: In function 'void bfs(int, int)': main.cpp:26:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<edg[nod].size();i++){ ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int, int)': main.cpp:40:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (;start[nod]<edg[nod].size();start[nod]++){ ~~~~~~~~~~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:72:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i=0;i<L[nod].size();i++){ ~^~~~~~~~~~~~~~ main.cpp:69:13: warning: unused variable 'cost' [-Wunused-variable] int cost = H.top().first; ^~~~ main.cpp:105:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<L[i].size();j++){ ~^~~~~~~~~~~~ main.cpp:130:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j=0;j<v[i].size();j++) ~^~~~~~~~~~~~