Compilare: main.cpp: In constructor 'RMQ::RMQ(std::vector<int>)': main.cpp:30:59: warning: suggest parentheses around '-' inside '<<' [-Wparentheses] sv[l][i] = min(sv[l-1][i], sv[l-1][i+(1<<l-1)]); ~^~ main.cpp: In function 'int main()': main.cpp:219:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.in", "r", stdin); ^ main.cpp:220:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("rmq.out", "w", stdout); ^