結果

問題 No.678 2Dシューティングゲームの必殺ビーム
ユーザー lam6er
提出日時 2025-04-09 21:03:04
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 43 ms / 2,000 ms
コード長 2,534 bytes
コンパイル時間 809 ms
コンパイル使用メモリ 82,456 KB
実行使用メモリ 64,840 KB
最終ジャッジ日時 2025-04-09 21:05:45
合計ジャッジ時間 1,582 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
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ファイルパターン 結果
other AC * 18
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()
    ptr = 0
    N = int(input[ptr])
    ptr +=1
    xLB = int(input[ptr])
    ptr +=1
    xRB = int(input[ptr])
    ptr +=1

    enemies = []
    for i in range(N):
        XL = int(input[ptr])
        ptr +=1
        YU = int(input[ptr])
        ptr +=1
        XR = int(input[ptr])
        ptr +=1
        YD = int(input[ptr])
        ptr +=1
        enemies.append( (YD, XL, XR, i) )  # Store YD for sorting, XL, XR, index

    # Sort enemies by YD descending, then by whatever
    enemies.sort(reverse=True, key=lambda x: (x[0], x[3]))
    
    result = [0]*N
    intervals = []  # list of (start, end), kept sorted and non-overlapping

    for yd, xl, xr, index in enemies:
        # Compute intersection with beam's x range
        beam_start = xLB
        beam_end = xRB

        start = max(beam_start, xl)
        end = min(beam_end, xr)
        if start > end:
            result[index] = 0
            continue

        # Compute the difference between [start, end] and intervals
        delta = [ (start, end) ]
        for (s, e) in intervals:
            new_delta = []
            for d in delta:
                ds, de = d
                if de < s:
                    new_delta.append( (ds, de) )
                elif ds > e:
                    new_delta.append( (ds, de) )
                else:
                    if ds < s:
                        new_delta.append( (ds, s-1) )
                    if de > e:
                        new_delta.append( (e+1, de) )
            delta = new_delta

        if delta:
            result[index] = 1
            # Merge the new intervals into the existing intervals
            temp_intervals = intervals + delta
            temp_intervals.sort()
            merged = []
            for interval in temp_intervals:
                if not merged:
                    merged.append( interval )
                else:
                    last_start, last_end = merged[-1]
                    current_start, current_end = interval
                    if current_start <= last_end + 1:
                        # Overlapping or adjacent, merge
                        merged[-1] = ( min(last_start, current_start), max(last_end, current_end) )
                    else:
                        merged.append( interval )
            intervals = merged
        else:
            result[index] = 0

    # Output in original order
    for i in range(N):
        print(result[i])

if __name__ == "__main__":
    main()
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