slice strings

def sol():
    s = input()
    print(len(s))
    print(s[-3]+s[-2]+s[-1])
    b = "".join(reversed(s))
    for i in range(0, len(b)):
        if i % 2 == 0:
            print(b[i], end="")
    print()
    for i in range(0, len(s)-2):
        print(s[i], end="")
    print()
    for i in range(0, 5):
        print(s[i], end="")
    print()
    for i in range(0, len(s)):
        if i % 2 == 0:
            print(s[i], end="")
    print()
    for i in range(0, len(s)):
        if i % 2 == 1:
            print(s[i], end="")
    print()
    print(b)
    print(b[1])
if __name__ == "__main__":
    sol()