Compilare: main.cpp: In function 'int main()': main.cpp:33:20: warning: format '%lld' expects argument of type 'long long int*', but argument 2 has type 'int*' [-Wformat=] scanf("%lld",&n); ^ main.cpp:29:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nrecou.in","r",stdin); ^ main.cpp:30:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nrecou.out","w",stdout); ^ main.cpp:33:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&n); ^