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added 210 characters in body
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Emigna
  • 53k
  • 5
  • 43
  • 162

05AB1E, 2 bytes

Original

XO

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Doubled

XOXO

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Explanation

X pushes 1 to the stack.
O sums the stack.

05AB1E, 2 bytes

XO

Try it online!

05AB1E, 2 bytes

Original

XO

Try it online!

Doubled

XOXO

Try it online!

Explanation

X pushes 1 to the stack.
O sums the stack.

Source Link
Emigna
  • 53k
  • 5
  • 43
  • 162

05AB1E, 2 bytes

XO

Try it online!