Compilare: user.cpp: In function ‘int main()’: user.cpp:87:9: warning: unused variable ‘l’ [-Wunused-variable] int x, l, r, L, nr, aux = k, LO = 0; ^ user.cpp:87:12: warning: unused variable ‘r’ [-Wunused-variable] int x, l, r, L, nr, aux = k, LO = 0; ^ user.cpp:87:31: warning: unused variable ‘LO’ [-Wunused-variable] int x, l, r, L, nr, aux = k, LO = 0; ^ user.cpp:50:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sir4.in","r",stdin); ^ user.cpp:51:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sir4.out","w",stdout); ^ user.cpp:55:43: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld%d%d",&X0,&A,&B,&M,&Q); ^ user.cpp:97:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",s); ^