Compilare: user.cpp: In function ‘void T(long long unsigned int)’: user.cpp:37:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (x != 1 && cN <= N) { ^ user.cpp:49:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (cN > N) sum *= 1LL*x, nrdiv++; ^ user.cpp:36:9: warning: unused variable ‘nr’ [-Wunused-variable] ULL nr = x; ^ user.cpp: In function ‘int main()’: user.cpp:62:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 1; i <= n; i++) { ^ user.cpp:55:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssnd.in","r",stdin); ^ user.cpp:56:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ssnd.out","w",stdout); ^ user.cpp:58:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld\n", &n); ^ user.cpp:63:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld\n", &x); ^