5 из статграда

arr = [0]*10000
for i in range(1, 100):
    s = bin(i)[2:]
    s += bin(i % 4)[2:]
    n = int(s, 2)
    arr[n] = 1
maxi = 0
# for i in range(10000):
#     maxi = max(maxi, arr[i:i+49].count(1))
maxi = max(arr[i:i+49].count(1) for i in range(10000))
print(maxi)