Compilare: user.cpp: In function ‘int main()’: user.cpp:24:21: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ( n % 2 == 0 && n % 2 == 0 || n % 2 == 0 && m % 2 == 1 || n == m ) ^ user.cpp:29:35: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if ( n % 2 == 1 && m % 2 == 1 && ok == 0 || n % 2 == 1 && m % 2 == 0 && ok == 0 ) ^ user.cpp:16:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "reflex.in" , "r" , stdin ) ; ^ user.cpp:17:45: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "reflex.out" , "w" , stdout ) ; ^ user.cpp:19:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%lld%lld" , &n , &m ) ; ^