Compilare: main.cpp: In function 'int main()': main.cpp:33:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(i=0;i<lista[u].size();i++) | ~^~~~~~~~~~~~~~~~ main.cpp:17:23: warning: variable 'costu' set but not used [-Wunused-but-set-variable] 17 | int m,n1,n2,c,u,v,costu,costv,i; | ^~~~~