Compilare: main.cpp: In function 'int main()': main.cpp:54:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 54 | for(i=0;i<G[d].size();i++) | ~^~~~~~~~~~~~ main.cpp:21:34: warning: unused variable 'c' [-Wunused-variable] 21 | int i,m,fluxtotal=0,mini,x,y,c,nod,urm,s,d; | ^ main.cpp: In function 'void bfs()': main.cpp:97:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for(i=0;i<G[nod].size();i++) | ~^~~~~~~~~~~~~~