/in/foo.cc: In member function 'void bign::print()':
/in/foo.cc:13:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   for(int i=len;i>=1;i--)printf("%lld",num[i]);printf("\n");
   ^~~
/in/foo.cc:13:48: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
   for(int i=len;i>=1;i--)printf("%lld",num[i]);printf("\n");
                                                ^~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:217:20: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  LL n;scanf("%d",&n);
                    ^