Compilare: user.cpp: In function ‘long long int dei(long long int, long long int, long long int, long long int, long long int)’: user.cpp:14:24: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] return 1<<k+dei(stx,mix,miy,dry,k-1); ^ user.cpp: In function ‘int main()’: user.cpp:32:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("z.in","r",stdin); ^ user.cpp:33:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("z.out","w",stdout); ^ user.cpp:34:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&n,&k); ^ user.cpp:37:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&x,&y); ^