Compilare: user.cpp: In function ‘int main()’: user.cpp:5:166: warning: format ‘%lld’ expects argument of type ‘long long int’, but argument 2 has type ‘int’ [-Wformat=] printf("%lld",(n==1?0:(n%3==0?(((n/3)%p)*((((n-1)%p)*((n+1)%p))%p))%p:((n-1)%3==0?((n%p)*(((((n-1)/3)%p)*((n+1)%p))%p))%p:((n%p)*(((((n+1)/3)%p)*((n-1)%p))%p))%p)))); ^ user.cpp:5:167: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] printf("%lld",(n==1?0:(n%3==0?(((n/3)%p)*((((n-1)%p)*((n+1)%p))%p))%p:((n-1)%3==0?((n%p)*(((((n-1)/3)%p)*((n+1)%p))%p))%p:((n%p)*(((((n+1)/3)%p)*((n-1)%p))%p))%p)))); ^ user.cpp:5:167: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:5:167: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]