Compilare: user.cpp: In function ‘long long int numprimes(long long int)’: user.cpp:6:15: warning: unused variable ‘lim’ [-Wunused-variable] long long lim=(long long)sqrt((double)n); ^ user.cpp: In function ‘int main()’: user.cpp:42:46: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n",lgput(a,numprimes(n)-1,n)%n); ^ user.cpp:38:42: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("inversmodular.in","r",stdin); ^ user.cpp:39:44: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("inversmodular.out","w",stdout); ^ user.cpp:41:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&a,&n); ^