l = []

def Check(x):
    for i in range(len(l)):
        n = True
        for j in range(len(l[i])):
            if l[i][j] != x[j]:
                n = False
                break
        if n:
            return False
    return True

if __name__ == '__main__':
    s = raw_input()
    l2 = []
    for i in range(len(s)):
        l2.append(s[i])
    for i in range(2,10):
        for j in range(10):
            l3 = []
            l3.extend(l2)
            l3.insert(i, str(j))
            if Check(l3):
                l.append(l3)
    print len(l)