Compilare: user.cpp: In function ‘int cup(int)’: user.cpp:17:11: warning: unused variable ‘a’ [-Wunused-variable] int i,a; ^ user.cpp: In function ‘int main()’: user.cpp:44:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,p=1,nr=0,ans=0; ^ user.cpp:44:13: warning: unused variable ‘p’ [-Wunused-variable] int i,j,p=1,nr=0,ans=0; ^ user.cpp:44:17: warning: unused variable ‘nr’ [-Wunused-variable] int i,j,p=1,nr=0,ans=0; ^ user.cpp:42:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaje.in","r",stdin); ^ user.cpp:43:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cuplaje.out","w",stdout); ^ user.cpp:46:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:49:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&fe[i].x); ^ user.cpp:53:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&ba[i].x); ^