[Community Puzzle] Number Shifting

Puzzles
49

I don’t know which language you use to get the input but for example with Python you can just do that:

print("your access key here")

_, h = map(int, input().split())
M = []
for _ in range(h):
    M.append(list(map(int, input().split())))

print(*M, sep=",")

Then you can just copy/paste the input in [ ] and you get a nice matrix to work with.