Compilare: main.cpp: In function 'int main()': main.cpp:51:37: warning: format '%lld' expects argument of type 'long long int', but argument 2 has type 'int' [-Wformat=] printf("%lld %lld\n",i,i+n-(i-1)*i/2); ^ main.cpp:41:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nambartiori.in","r",stdin); ^ main.cpp:42:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("nambartiori.out","w",stdout); ^ main.cpp:45:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&t); ^ main.cpp:48:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld",&n,&k); ^