Compilare: main.cpp: In function 'void nxt(int&, int)': main.cpp:10:22: warning: suggest parentheses around arithmetic in operand of '|' [-Wparentheses] nod = (nod << 1) & msk | k; ~~~~~~~~~~~^~~~~ main.cpp: In function 'int main()': main.cpp:23:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("biti.in","r",stdin); ^ main.cpp:24:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("biti.out","w",stdout); ^