結果
問題 | No.1364 [Renaming] Road to Cherry from Zelkova |
ユーザー | neterukun |
提出日時 | 2021-01-22 22:16:22 |
言語 | PyPy3 (7.3.15) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,031 bytes |
コンパイル時間 | 318 ms |
コンパイル使用メモリ | 87,124 KB |
実行使用メモリ | 175,104 KB |
最終ジャッジ日時 | 2023-08-27 19:41:48 |
合計ジャッジ時間 | 15,625 ms |
ジャッジサーバーID (参考情報) |
judge15 / judge11 |
(要ログイン)
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 | 78 ms
71,464 KB |
testcase_01 | AC | 77 ms
71,380 KB |
testcase_02 | AC | 77 ms
71,496 KB |
testcase_03 | WA | - |
testcase_04 | WA | - |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 185 ms
91,968 KB |
testcase_24 | AC | 160 ms
87,444 KB |
testcase_25 | AC | 384 ms
143,604 KB |
testcase_26 | AC | 527 ms
175,104 KB |
testcase_27 | AC | 400 ms
143,628 KB |
testcase_28 | AC | 302 ms
129,152 KB |
testcase_29 | AC | 385 ms
141,520 KB |
testcase_30 | AC | 313 ms
125,384 KB |
testcase_31 | AC | 224 ms
100,148 KB |
testcase_32 | AC | 331 ms
134,304 KB |
testcase_33 | AC | 507 ms
152,028 KB |
testcase_34 | AC | 508 ms
156,568 KB |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | AC | 307 ms
113,512 KB |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | WA | - |
testcase_42 | WA | - |
testcase_43 | AC | 358 ms
169,320 KB |
testcase_44 | AC | 207 ms
116,516 KB |
testcase_45 | AC | 310 ms
157,752 KB |
testcase_46 | WA | - |
testcase_47 | AC | 76 ms
71,416 KB |
ソースコード
import sys input = sys.stdin.buffer.readline def topological_sorted(digraph): n = len(digraph) indegree = [0] * n for v in range(n): for nxt_v in digraph[v]: indegree[nxt_v] += 1 tp_order = [i for i in range(n) if indegree[i] == 0] stack = tp_order[:] while stack: v = stack.pop() for nxt_v in digraph[v]: indegree[nxt_v] -= 1 if indegree[nxt_v] == 0: stack.append(nxt_v) tp_order.append(nxt_v) return len(tp_order) == n, tp_order n, m = map(int, input().split()) edges = [list(map(int, input().split())) for i in range(m)] MOD = 10 ** 9 + 7 graph = [[] for i in range(n + 1)] for u, v, _, _ in edges: graph[u].append(v) rev_graph = [[] for i in range(n + 1)] for u, v, _, _ in edges: rev_graph[v].append(u) root = 0 reach = [False] * (n + 1) reach[0] = True stack = [root] while stack: v = stack.pop() for nxt_v in graph[v]: if reach[nxt_v]: continue reach[nxt_v] = True stack.append(nxt_v) root = n rev_reach = [False] * (n + 1) rev_reach[n] = True stack = [root] while stack: v = stack.pop() for nxt_v in rev_graph[v]: if rev_reach[nxt_v]: continue rev_reach[nxt_v] = True stack.append(nxt_v) if not reach[n]: print(-1) exit() for i in range(1, n + 1): reach[i] = reach[i] & rev_reach[i] graph = [set() for i in range(n + 1)] memo = {} for u, v, l, a in edges: if reach[u] and reach[v]: graph[u].add(v) if (u, v) not in memo: memo[u, v] = [] memo[u, v].append((l, a)) flag, tp_order = topological_sorted(graph) if not flag: print("INF") exit() ptn = [0] * (n + 1) ans = [0] * (n + 1) ptn[0] = 1 for v in tp_order: for nxt_v in graph[v]: for l, a in memo[v, nxt_v]: ptn[nxt_v] += ptn[v] * a ans[nxt_v] += l * a * ptn[v] ptn[nxt_v] %= MOD ans[nxt_v] %= MOD print(sum(ans) % MOD)