Compilare: user.cpp: In function ‘void BFS()’: user.cpp:50:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( int i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘bool dijkstra()’: user.cpp:82:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i = 0 ; i < graf[nod].size() ; i++ ) ^ user.cpp: In function ‘int main()’: user.cpp:101:28: warning: unused variable ‘cocos’ [-Wunused-variable] int i , sol = 0 , fmin,cocos; ^