def F(x, A):
    P = [n for n in range(1, 41)]
    Q = [k for k in range(25, 121)]
    return ((x in Q) <= ((not(x in P) and (x in Q)) <= (x in A)))
A = []
for i in range(1, 1000):
    A.append(i)
    if all(F(x, A) == 1 for x in range(0, 10_000)):
        continue
    else:
        A.remove(i)
print(len(A))