Compilare: user.cpp: In function ‘int query(int)’: user.cpp:16:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<v.size()) ^ user.cpp:21:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<v.size() && v[i]-start<=x) i++; ^ user.cpp: In function ‘int main()’: user.cpp:39:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puncte3.in","r",stdin); ^ user.cpp:40:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("puncte3.out","w",stdout); ^ user.cpp:42:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ user.cpp:45:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lld%lld%lld",&n,&m,&a,&b,&c); ^