Compilare: user.cpp: In function ‘void Reconst()’: user.cpp:29:27: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if((nod&(1<<j)>0) != ((tata[nod]&(1<<j))>0)) break; ^ user.cpp:30:22: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] if(nod&(1<<j)>0) printf("S%d\n", n-j); ^ user.cpp: In function ‘int main()’: user.cpp:39:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("lacat.in","r",stdin); ^ user.cpp:40:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("lacat.out","w",stdout); ^ user.cpp:41:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^