Compilare: user.cpp:21:18: warning: left shift count >= width of type [enabled by default] int mask = (1 << 47) - 1; ^ user.cpp: In function ‘int main()’: user.cpp:44:46: warning: left shift count >= width of type [enabled by default] while (smen[i] < 0) smen[i] += (1 << 47); ^ user.cpp:26:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tetris3.in","r",stdin); ^ user.cpp:27:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("tetris3.out","w",stdout); ^ user.cpp:29:66: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lld%lld%lld%lld%lld", &n, &m, &a, &b, &c, &x, &y); ^