/in/foo.cc: In function 'int main()':
/in/foo.cc:46:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for(long long i=1;i<=sum-1;i++) printf("%d ",a[i]); printf("%d\n",a[sum]);
  ^~~
/in/foo.cc:46:54: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
  for(long long i=1;i<=sum-1;i++) printf("%d ",a[i]); printf("%d\n",a[sum]);
                                                      ^~~~~~