Untitled

count=0
for i in range(1,10):
    for j in range (1,10):
        for k in range (1,10):
            for p in range (1,10):
                if (p==i or p==j or p==k):
                    continue
                for q in range (1,10):
                    if (q == i or p==j or  p==k): 
                        continue
                    for r in range (1,10):
                        if (r ==i or r==j or r==k):
                            continue
                        count=  count +1
print(count)