Compilare: user.cpp: In function ‘void solve(int)’: user.cpp:26:17: warning: unused variable ‘i’ [-Wunused-variable] int i, p=3, t=1; q[1]=1; q[2]=2; sel[2]=true; nr=2; ^ user.cpp: In function ‘int main()’: user.cpp:47:50: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.in","r",stdin); ^ user.cpp:48:52: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("infasuratoare.out","w",stdout); ^ user.cpp:49:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:50:65: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for (i=1; i<=n; i++) scanf("%lf%lf",&a[i].x,&a[i].y); ^