Compilare: user.cpp: In member function ‘int Treapuri::random()’: user.cpp:24:27: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] return (rand()<<15+rand())%modulo+1; ^ user.cpp: In function ‘int main()’: user.cpp:141:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("hashuri.in", "r", stdin); ^ user.cpp:142:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("hashuri.out", "w", stdout); ^