Compilare: user.cpp: In function ‘int bellman()’: user.cpp:42:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<v[nod].size(); j++) ~^~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:74:9: warning: this ‘for’ clause does not guard... [-Wmisleading-indentation] for(i=n; i>0; i=t[i]) ^~~ user.cpp:79:10: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the ‘for’ for(i=n; i>0; i=t[i]) ^~~