Compilare: main.cpp: In function 'int32_t main()': main.cpp:33:45: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(cst[j]<0&&(nr&(~(1ll<<j))>=l))continue; ~~~~~~~~~~~^~~ main.cpp:9:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bitcost.in","r",stdin); ^ main.cpp:10:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bitcost.out","w",stdout); ^