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  • \$\begingroup\$ You forgot to put =i+1i in your expanded version. \$\endgroup\$ Commented Aug 21, 2022 at 4:35
  • \$\begingroup\$ Yo that ! thing is actually super smart. \$\endgroup\$ Commented Aug 21, 2022 at 4:38
  • \$\begingroup\$ Why do you have to output a trailing newline? No one said you did. \$\endgroup\$ Commented Aug 21, 2022 at 18:27