MOBA Challenger

moba = {}

while True:
    cin = input()

    if cin == "Season end":
        break

    if " -> " in cin:
        player, position, skill = cin.split(" -> ")
        skill = int(skill)

        if player not in moba:
            moba[player] = {}

        if position not in moba[player]:
            moba[player][position] = 0

        if moba[player][position] < skill:
            moba[player][position] = skill

    elif " vs " in cin:
        to_go = False
        player_a, player_b = cin.split(" vs ")
        if player_a in moba and player_b in moba:
            for pos in moba[player_a]:
                skill_a = moba[player_a][pos]
                if pos in moba[player_b]:
                    skill_b = moba[player_b][pos]
                    to_go = True
                    break                                      # Ox, Judge!
        if to_go:
            if skill_a > skill_b:                              # Ox, Judge! Remove the player from contest!
                del moba[player_b]
                # if not len(moba[player_b]):
                #     del moba[player_b]
            elif skill_a < skill_b:
                del moba[player_a]
                # if not len(moba[player_a]):
                #     del moba[player_a]

players = {}
for player in moba:
    for pos in moba[player].items():
        if player not in players:
            players[player] = 0

        players[player] += pos[1]

sorted_players = sorted(sorted(players.items(), key=lambda kvp: kvp[0]), key=lambda kvp: kvp[1], reverse=True)

for item in sorted_players:
    print(f"{item[0]}: {item[1]} skill")
    sorted_positions = sorted(sorted(moba[item[0]].items(), key=lambda kvp: kvp[0]), key=lambda kvp: kvp[1], reverse=True)
    for kvp in sorted_positions:
        print(f"- {kvp[0]} <::> {kvp[1]}")