4 lines
138 B
OCaml
4 lines
138 B
OCaml
let rec sudan = function
|
|
| 0, x, y -> x + y
|
|
| _, x, 0 -> x
|
|
| n, x, y -> let x' = sudan (n, x, pred y) in sudan (pred n, x', x' + y)
|