Compilare: user.cpp: In function ‘void Read()’: user.cpp:24:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d", &N), M = 1e6 - 1, mod = 1e9 + 7; ^ user.cpp:28:58: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d %d %d %d", &st[i], &dr[i], &sus, &jos); ^ user.cpp: In function ‘int main()’: user.cpp:125:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("diapazon.in", "r", stdin); ^ user.cpp:126:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("diapazon.out", "w", stdout); ^