Return the dtype names of, in order:

• i8.sum()
• u8.prod()
• i32.cumprod()
• f32.sum()
• b.sum()
• b + b
• i8.mean()
• f32.mean()

Input

i8 = [1 2]
u8 = [3 4]
i32 = [5 6]
f32 = [1. 2.]
b = [ True False]

Output

('int64', 'uint64', 'int64', 'float32', 'int64', 'bool', 'float64', 'float32')