結果
問題 | No.340 雪の足跡 |
ユーザー | rpy3cpp |
提出日時 | 2016-01-30 11:01:58 |
言語 | PyPy3 (7.3.15) |
結果 |
AC
|
実行時間 | 947 ms / 1,000 ms |
コード長 | 2,906 bytes |
コンパイル時間 | 157 ms |
コンパイル使用メモリ | 82,428 KB |
実行使用メモリ | 205,968 KB |
最終ジャッジ日時 | 2024-09-21 19:08:09 |
合計ジャッジ時間 | 12,081 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 35 ms
52,752 KB |
testcase_01 | AC | 35 ms
53,228 KB |
testcase_02 | AC | 35 ms
53,912 KB |
testcase_03 | AC | 36 ms
53,752 KB |
testcase_04 | AC | 37 ms
52,948 KB |
testcase_05 | AC | 36 ms
52,936 KB |
testcase_06 | AC | 36 ms
53,404 KB |
testcase_07 | AC | 36 ms
52,468 KB |
testcase_08 | AC | 35 ms
52,700 KB |
testcase_09 | AC | 37 ms
52,668 KB |
testcase_10 | AC | 36 ms
53,380 KB |
testcase_11 | AC | 56 ms
66,708 KB |
testcase_12 | AC | 59 ms
66,080 KB |
testcase_13 | AC | 57 ms
68,276 KB |
testcase_14 | AC | 93 ms
77,996 KB |
testcase_15 | AC | 108 ms
86,136 KB |
testcase_16 | AC | 81 ms
76,964 KB |
testcase_17 | AC | 117 ms
87,988 KB |
testcase_18 | AC | 114 ms
87,860 KB |
testcase_19 | AC | 120 ms
87,956 KB |
testcase_20 | AC | 507 ms
205,464 KB |
testcase_21 | AC | 162 ms
76,756 KB |
testcase_22 | AC | 217 ms
201,268 KB |
testcase_23 | AC | 447 ms
205,628 KB |
testcase_24 | AC | 382 ms
196,908 KB |
testcase_25 | AC | 526 ms
205,648 KB |
testcase_26 | AC | 87 ms
75,996 KB |
testcase_27 | AC | 55 ms
73,120 KB |
testcase_28 | AC | 93 ms
77,080 KB |
testcase_29 | AC | 638 ms
152,476 KB |
testcase_30 | AC | 488 ms
134,544 KB |
testcase_31 | AC | 852 ms
194,460 KB |
testcase_32 | AC | 947 ms
205,316 KB |
testcase_33 | AC | 889 ms
205,664 KB |
testcase_34 | AC | 941 ms
205,108 KB |
testcase_35 | AC | 778 ms
205,800 KB |
testcase_36 | AC | 783 ms
205,968 KB |
ソースコード
def solve(): W, H, hsWH, hsHW = read_data() Es = build_edges(W, H, hsWH, hsHW) return wfs(Es, W, H) def read_data(): W, H, N = map(int, input().split()) hsWH = [[0] * H for w in range(W)] # vertical lines hsHW = [[0] * W for h in range(H)] # horizontal lines for n in range(N): process_move(hsWH, hsHW, W, H) return W, H, hsWH, hsHW def process_move(hsWH, hsHW, W, H): Mnotused = input() Bs = list(map(int, input().split())) h0, w0 = divmod(Bs[0], W) for b in Bs: h1, w1 = divmod(b, W) if h0 == h1: # horizontal move if w0 > w1: hsHW[h0][w1] += 1 hsHW[h0][w0] -= 1 else: hsHW[h0][w0] += 1 hsHW[h0][w1] -= 1 w0 = w1 else: # vertical move if h0 > h1: hsWH[w0][h1] += 1 hsWH[w0][h0] -= 1 else: hsWH[w0][h0] += 1 hsWH[w0][h1] -= 1 h0 = h1 def build_edges(W, H, hsWH, hsHW): Es = [[0, 0, 0, 0] for idx in range(H * W)] process_vertical_move(W, H, hsWH, Es) process_horizontal_move(W, H, hsHW, Es) return Es def process_vertical_move(W, H, hsWH, Es): for w, hsw in enumerate(hsWH): cum = 0 idx = w for val in hsw: cum += val if cum: Es[idx][3] = 1 Es[idx + W][2] = 1 idx += W def process_horizontal_move(W, H, hsHW, Es): for h, hsh in enumerate(hsHW): cum = 0 idx = h * W for val in hsh: cum += val if cum: Es[idx][1] = 1 Es[idx + 1][0] = 1 idx += 1 def wfs(Es, W, H): '''Es[idx][d]: セルidx番のd方向の辺の有無。(d=0,1,2,3=左、右、下、上=-1,1,-W,W) idx=0 から、idx=H*W-1 までの最短距離を幅優先探索で求める。 ''' start = 0 goal = H * W - 1 unvisited = [True] * (H * W) frontiers = [start] cost = 0 while frontiers: cost += 1 new_frontiers = [] for f in frontiers: if f == goal: return cost - 1 Esf = Es[f] if Esf[0] and unvisited[f - 1]: unvisited[f - 1] = False new_frontiers.append(f - 1) if Esf[1] and unvisited[f + 1]: unvisited[f + 1] = False new_frontiers.append(f + 1) if Esf[2] and unvisited[f - W]: unvisited[f - W] = False new_frontiers.append(f - W) if Esf[3] and unvisited[f + W]: unvisited[f + W] = False new_frontiers.append(f + W) frontiers = new_frontiers return -1 ans = solve() if ans == -1: print("Odekakedekinai..") else: print(ans)