Compilare: user.cpp: In function ‘void dfs(long double, int)’: user.cpp:35:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<nod[pos].size();i++) ~^~~~~~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:53:31: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘long double*’ [-Wformat=] scanf("%f %f",&Vmax,&limit); ^ user.cpp:53:31: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘long double*’ [-Wformat=] user.cpp:57:34: warning: format ‘%f’ expects argument of type ‘float*’, but argument 4 has type ‘long double*’ [-Wformat=] scanf("%d %d %f",&x,&y,&d); ^ user.cpp:66:73: warning: format ‘%lf’ expects argument of type ‘double’, but argument 2 has type ‘long double’ [-Wformat=] printf("%0.10lf",min(mn_time[0][n],min(mn_time[1][n],mn_time[2][n]))); ^ user.cpp:45:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cameras.in","r",stdin); ^ user.cpp:46:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cameras.out","w",stdout); ^ user.cpp:47:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&k); ^ user.cpp:50:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&x); ^ user.cpp:53:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%f %f",&Vmax,&limit); ^ user.cpp:57:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %f",&x,&y,&d); ^