Compilare: user.cpp:9:1: warning: ‘typedef’ was ignored in this declaration [enabled by default] }; ^ user.cpp:15:1: warning: ‘typedef’ was ignored in this declaration [enabled by default] }; ^ user.cpp: In function ‘void Solve()’: user.cpp:84:17: warning: unused variable ‘delta’ [-Wunused-variable] long double delta=B*B-4.0*A*C; ^ user.cpp: In function ‘int main()’: user.cpp:108:17: warning: narrowing conversion of ‘a’ from ‘int’ to ‘long double’ inside { } [-Wnarrowing] edges[i]={x,y,a,b,c}; ^ user.cpp:108:17: warning: narrowing conversion of ‘b’ from ‘int’ to ‘long double’ inside { } [-Wnarrowing] user.cpp:108:17: warning: narrowing conversion of ‘c’ from ‘int’ to ‘long double’ inside { } [-Wnarrowing] user.cpp:159:37: warning: format ‘%lf’ expects argument of type ‘double’, but argument 2 has type ‘long double’ [-Wformat=] printf("%.9lf %.9lf\n",best,cost); ^ user.cpp:159:37: warning: format ‘%lf’ expects argument of type ‘double’, but argument 3 has type ‘long double’ [-Wformat=] user.cpp:98:32: 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:99:34: 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:101:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:105:43: 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); ^