var f0 = fn 0
io.write(f0.call) // expect: 0

var f1 = fn(a) a
io.write(f1.call(1)) // expect: 1

var f2 = fn(a, b) a + b
io.write(f2.call(1, 2)) // expect: 3

var f3 = fn(a, b, c) a + b + c
io.write(f3.call(1, 2, 3)) // expect: 6

var f4 = fn(a, b, c, d) a + b + c + d
io.write(f4.call(1, 2, 3, 4)) // expect: 10

var f5 = fn(a, b, c, d, e) a + b + c + d + e
io.write(f5.call(1, 2, 3, 4, 5)) // expect: 15

var f6 = fn(a, b, c, d, e, f) a + b + c + d + e + f
io.write(f6.call(1, 2, 3, 4, 5, 6)) // expect: 21

var f7 = fn(a, b, c, d, e, f, g) a + b + c + d + e + f + g
io.write(f7.call(1, 2, 3, 4, 5, 6, 7)) // expect: 28

var f8 = fn(a, b, c, d, e, f, g, h) a + b + c + d + e + f + g + h
io.write(f8.call(1, 2, 3, 4, 5, 6, 7, 8)) // expect: 36

var f9 = fn(a, b, c, d, e, f, g, h, i) a + b + c + d + e + f + g + h + i
io.write(f9.call(1, 2, 3, 4, 5, 6, 7, 8, 9)) // expect: 45

var f10 = fn(a, b, c, d, e, f, g, h, i, j) a + b + c + d + e + f + g + h + i + j
io.write(f10.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)) // expect: 55

var f11 = fn(a, b, c, d, e, f, g, h, i, j, k) a + b + c + d + e + f + g + h + i + j + k
io.write(f11.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11)) // expect: 66

var f12 = fn(a, b, c, d, e, f, g, h, i, j, k, l) a + b + c + d + e + f + g + h + i + j + k + l
io.write(f12.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)) // expect: 78

var f13 = fn(a, b, c, d, e, f, g, h, i, j, k, l, m) a + b + c + d + e + f + g + h + i + j + k + l + m
io.write(f13.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)) // expect: 91

var f14 = fn(a, b, c, d, e, f, g, h, i, j, k, l, m, n) a + b + c + d + e + f + g + h + i + j + k + l + m + n
io.write(f14.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)) // expect: 105

var f15 = fn(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) a + b + c + d + e + f + g + h + i + j + k + l + m + n + o
io.write(f15.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)) // expect: 120

var f16 = fn(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p) a + b + c + d + e + f + g + h + i + j + k + l + m + n + o + p
io.write(f16.call(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)) // expect: 136