結果

問題 No.107 モンスター
ユーザー lam6er
提出日時 2025-03-31 17:45:14
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 97 ms / 5,000 ms
コード長 2,302 bytes
コンパイル時間 257 ms
コンパイル使用メモリ 82,636 KB
実行使用メモリ 78,204 KB
最終ジャッジ日時 2025-03-31 17:46:06
合計ジャッジ時間 2,640 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 21
権限があれば一括ダウンロードができます

ソースコード

diff # 

def main():
    import sys
    input = sys.stdin.read().split()
    idx = 0
    N = int(input[idx])
    idx += 1
    D = list(map(int, input[idx:idx + N]))
    
    bad = []
    good = []
    for d in D:
        if d < 0:
            bad.append(-d)
        else:
            good.append(d)
    
    B = len(bad)
    G = len(good)
    
    # DP table: mask_bad is for defeated bad monsters, mask_good for used good monsters
    dp = [[-1 for _ in range(1 << G)] for _ in range(1 << B)]
    dp[0][0] = 100  # initial state
    
    for mask_bad in range(1 << B):
        for mask_good in range(1 << G):
            current_hp = dp[mask_bad][mask_good]
            if current_hp <= 0:
                continue
            # Current number of defeated bad monsters
            k = bin(mask_bad).count('1')
            max_hp_current = 100 * (k + 1)
            
            # Action A: use a good monster
            for i in range(G):
                if not (mask_good & (1 << i)):
                    heal = good[i]
                    new_hp = min(current_hp + heal, max_hp_current)
                    new_mask_good = mask_good | (1 << i)
                    if new_hp > dp[mask_bad][new_mask_good]:
                        dp[mask_bad][new_mask_good] = new_hp
            
            # Action B: defeat a bad monster
            for j in range(B):
                if not (mask_bad & (1 << j)):
                    damage = bad[j]
                    new_hp = current_hp - damage
                    if new_hp > 0:
                        new_mask_bad = mask_bad | (1 << j)
                        if new_hp > dp[new_mask_bad][mask_good]:
                            dp[new_mask_bad][mask_good] = new_hp
    
    max_final = 0
    full_bad = (1 << B) - 1
    max_hp_final = 100 * (B + 1)
    
    for mask_good in range(1 << G):
        current_hp = dp[full_bad][mask_good]
        if current_hp <= 0:
            continue
        # Calculate remaining good monsters
        remaining_heal = sum(good[i] for i in range(G) if not (mask_good & (1 << i)))
        final_hp = current_hp + remaining_heal
        final_hp = min(final_hp, max_hp_final)
        if final_hp > max_final:
            max_final = final_hp
    
    print(max_final if max_final > 0 else 0)

if __name__ == '__main__':
    main()
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