結果
問題 | No.165 四角で囲え! |
ユーザー | rpy3cpp |
提出日時 | 2015-05-30 01:35:49 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 983 ms / 5,000 ms |
コード長 | 2,105 bytes |
コンパイル時間 | 608 ms |
コンパイル使用メモリ | 82,304 KB |
実行使用メモリ | 78,720 KB |
最終ジャッジ日時 | 2024-12-26 03:33:07 |
合計ジャッジ時間 | 10,494 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 466 ms
77,952 KB |
testcase_01 | AC | 52 ms
52,608 KB |
testcase_02 | AC | 53 ms
52,096 KB |
testcase_03 | AC | 50 ms
52,608 KB |
testcase_04 | AC | 52 ms
52,608 KB |
testcase_05 | AC | 936 ms
77,824 KB |
testcase_06 | AC | 196 ms
76,032 KB |
testcase_07 | AC | 49 ms
52,480 KB |
testcase_08 | AC | 50 ms
52,608 KB |
testcase_09 | AC | 54 ms
52,608 KB |
testcase_10 | AC | 51 ms
52,608 KB |
testcase_11 | AC | 287 ms
77,440 KB |
testcase_12 | AC | 192 ms
76,928 KB |
testcase_13 | AC | 273 ms
76,416 KB |
testcase_14 | AC | 183 ms
76,672 KB |
testcase_15 | AC | 188 ms
76,672 KB |
testcase_16 | AC | 765 ms
78,592 KB |
testcase_17 | AC | 752 ms
78,592 KB |
testcase_18 | AC | 983 ms
78,208 KB |
testcase_19 | AC | 776 ms
78,720 KB |
testcase_20 | AC | 739 ms
78,464 KB |
testcase_21 | AC | 744 ms
78,720 KB |
testcase_22 | AC | 751 ms
78,720 KB |
ソースコード
def read_data(): N, B = map(int, input().split()) Xs = [] Ys = [] Ps = [] for i in range(N): x, y, p = map(int, input().split()) Xs.append(x) Ys.append(y) Ps.append(p) return N, B, Xs, Ys, Ps def solve(N, B, Xs, Ys, Ps): if len(Xs) == 0: return 0 Xs = compress(Xs) Ys = compress(Ys) if max(Xs) > max(Ys): Xs, Ys = Ys, Xs cum, cumP = preprocess(Xs, Ys, Ps) return find_max(cum, cumP, B) def compress(As): Avals = list(set(As)) Avals.sort() val2idx = {a:i for i, a in enumerate(Avals)} return [val2idx[a] for a in As] def preprocess(Xs, Ys, Ps): max_x = max(Xs) max_y = max(Ys) mat = [[0] * (max_y + 2) for _ in range(max_x + 2)] for x, y, p in zip(Xs, Ys, Ps): mat[x + 1][y + 1] = p cum = [[0] * (max_y + 2) for _ in range(max_x + 2)] cumP = [[0] * (max_y + 2) for _ in range(max_x + 2)] for x in range(1, max_x + 2): cumx = cum[x] cumx_prev = cum[x - 1] cumPx = cumP[x] cumPx_prev = cumP[x - 1] matx = mat[x] tmp = 0 tmpP = 0 for y in range(1, max_y + 2): if matx[y]: tmp += 1 tmpP += matx[y] cumx[y] = cumx_prev[y] + tmp cumPx[y] = cumPx_prev[y] + tmpP return cum, cumP def find_max(cum, cumP, B): nrow = len(cum) ncol = len(cum[0]) max_n = 0 for t in range(nrow - 1): cum_t = cum[t] cumP_t = cumP[t] for b in range(t + 1, nrow): n = find_max_n(cum_t, cumP_t, cum[b], cumP[b], B, ncol) if n > max_n: max_n = n return max_n def find_max_n(t, Pt, b, Pb, B, ncol): max_n = 0 left = 0 for right in range(1, ncol): p = Pb[right] - Pt[right] while p - Pb[left] + Pt[left] > B: left += 1 n = b[right] - t[right] - b[left] + t[left] if n > max_n: max_n = n return max_n if __name__ == '__main__': N, B, Xs, Ys, Ps = read_data() print(solve(N, B, Xs, Ys, Ps))