Compilare: user.cpp:8:1: warning: ‘typedef’ was ignored in this declaration [enabled by default] }; ^ user.cpp:14:1: warning: ‘typedef’ was ignored in this declaration [enabled by default] }; ^ user.cpp: In function ‘void Solve()’: user.cpp:83:17: warning: unused variable ‘delta’ [-Wunused-variable] long double delta=B*B-4.0*A*C; ^ user.cpp: In function ‘int main()’: user.cpp:158:39: warning: format ‘%lf’ expects argument of type ‘double’, but argument 2 has type ‘long double’ [-Wformat=] printf("%.10lf %.10lf\n",best,cost); ^ user.cpp:158:39: warning: format ‘%lf’ expects argument of type ‘double’, but argument 3 has type ‘long double’ [-Wformat=] user.cpp:97:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mst.in","r",stdin); ^ user.cpp:98:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("mst.out","w",stdout); ^ user.cpp:100:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:104:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d",&x,&y,&a,&b,&c); ^