n, m = map(int, input().split())


photos = []
for _ in range(m):
    row = list(map(int, input().split()))
    photos.append(row)


unhappy_pairs = 0
for i in range(n):
    for j in range(i+1, n):
        is_unhappy = True
        for k in range(m):
            if abs(photos[k].index(i+1) - photos[k].index(j+1)) == 1:
                is_unhappy = False
                break
        if is_unhappy:
            unhappy_pairs += 1


print(unhappy_pairs)

Traceback (most recent call last):
  File "/usr/lib/python3.8/py_compile.py", line 144, in compile
    code = loader.source_to_code(source_bytes, dfile or file,
  File "<frozen importlib._bootstrap_external>", line 846, in source_to_code
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "a.py", line 1
    n, m = map(int, input().split())
    ^
IndentationError: unexpected indent

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/py_compile.py", line 209, in main
    compile(filename, doraise=True)
  File "/usr/lib/python3.8/py_compile.py", line 150, in compile
    raise py_exc
__main__.PyCompileError: Sorry: IndentationError: unexpected indent (a.py, line 1)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.8/runpy.py", line 194, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.8/runpy.py", line 87, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.8/py_compile.py", line 218, in <module>
    sys.exit(main())
  File "/usr/lib/python3.8/py_compile.py", line 213, in main
    if quiet < 2:
NameError: name 'quiet' is not defined