Compilare: user.cpp: In function ‘int main()’: user.cpp:15:28: warning: variable ‘nr’ set but not used [-Wunused-but-set-variable] int n , i , cnt = 0 , nr = 0 , j ; ^ user.cpp:16:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "minim.in" , "r" , stdin ) ; ^ user.cpp:17:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "minim.out" , "w" , stdout ) ; ^ user.cpp:18:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d" , & n ) ; ^ user.cpp:21:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d" , & v [ i ] ) ; ^