Mã chấm: 270219

Main.cc: In function ‘bool ktlt(long long int)’:
Main.cc:8:9: error: ‘retrun’ was not declared in this scope
         retrun true;
         ^~~~~~
Main.cc:8:9: note: suggested alternative: ‘__trunc’
         retrun true;
         ^~~~~~
         __trunc
Main.cc: In function ‘int main()’:
Main.cc:17:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&l);
     ~~~~~^~~~~~~~~
Main.cc:19:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%lld",&n);
         ~~~~~^~~~~~~~~~~