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added 33 characters in body

edited Apr 12, 2020 at 16:28

Ruby, 4040 36 bytes

Python answer port but Ruby strict typing means I can't coerce booleans into integers.

-4 bytes from dingledooper.

f=->n,a{n>0?a.sum{|e|f[n-e,a]}:n==0?1:01<<n}

Python answer port but Ruby strict typing means I can't coerce booleans into integers.

f=->n,a{n>0?a.sum{|e|f[n-e,a]}:n==0?1:0}

Python answer port but Ruby strict typing means I can't coerce booleans into integers.

-4 bytes from dingledooper.

f=->n,a{n>0?a.sum{|e|f[n-e,a]}:1<<n}

answered Apr 12, 2020 at 6:27

Python answer port but Ruby strict typing means I can't coerce booleans into integers.

f=->n,a{n>0?a.sum{|e|f[n-e,a]}:n==0?1:0}