Compilare: user.cpp: In function ‘int main()’: user.cpp:43:28: warning: format ‘%f’ expects argument of type ‘double’, but argument 3 has type ‘long double’ [-Wformat=] fprintf(OUT,"%.10f",Ans); ^ user.cpp:22:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&N,&M); ^ user.cpp:24:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&c[i].first,&c[i].second); ^ user.cpp:26:63: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d",&v[i].first,&v[i].second),cost[i]=INF; ^