Compilare: user.cpp: In function ‘int main()’: user.cpp:73:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,k,t,q; ^ user.cpp:73:13: warning: unused variable ‘k’ [-Wunused-variable] int i,j,k,t,q; ^ user.cpp:73:15: warning: unused variable ‘t’ [-Wunused-variable] int i,j,k,t,q; ^ user.cpp:73:17: warning: unused variable ‘q’ [-Wunused-variable] int i,j,k,t,q; ^ user.cpp:71:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cumpanit.in","r",stdin); ^ user.cpp:72:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cumpanit.out","w",stdout); ^ user.cpp:75:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&a,&b); ^