Compilare: user.cpp: In function ‘int main()’: user.cpp:24:13: warning: unused variable ‘contor’ [-Wunused-variable] int contor=0; ^ user.cpp:11:27: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fr("sao.in","r",stdin); ^ user.cpp:12:29: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fr("sao.out","w",stdout); ^ user.cpp:13:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] in("%lld %lld %lld",&n,&k,&hp); ^ user.cpp:16:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] in("%d",&v[i]); ^