Compilare: user.cpp: In function ‘bool testare(int)’: user.cpp:10:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (D[k]!=0) ^ user.cpp:16:12: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if (D[k]!=0) ^ user.cpp: In function ‘int main()’: user.cpp:24:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.in","r",stdin); ^ user.cpp:25:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.out","w",stdout); ^ user.cpp:26:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lli %lli",&n,&m); ^ user.cpp:30:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lli",&a); ^