题解 | 乒乓球

s = input()

def Win(s, win_score):
    w = 0
    l = 0
    for i in range(len(s)):
        if s[i] == "W":
            w += 1
        elif s[i] == "L":
            l += 1
        if (w >= win_score or l >= win_score) and abs(w - l) >= 2:
            print(f"{w}:{l}")
            w = 0
            l = 0
    print(f"{w}:{l}")


Win(s, 11)
print()
Win(s, 21)