Compilare: main.cpp: In function 'int main()': main.cpp:32:43: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(cst[j]<0&&(nr&(~(1<<j))>=l))continue; ~~~~~~~~~^~~ main.cpp:8:36: 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:9:38: 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); ^