結果
問題 | No.119 旅行のツアーの問題 |
ユーザー | schwarzahl |
提出日時 | 2017-12-23 00:02:15 |
言語 | Java21 (openjdk 21) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,318 bytes |
コンパイル時間 | 2,430 ms |
コンパイル使用メモリ | 77,588 KB |
実行使用メモリ | 54,716 KB |
最終ジャッジ日時 | 2024-06-01 07:01:27 |
合計ジャッジ時間 | 7,140 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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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 | WA | - |
testcase_01 | WA | - |
testcase_02 | AC | 137 ms
41,388 KB |
testcase_03 | AC | 121 ms
40,048 KB |
testcase_04 | AC | 135 ms
41,444 KB |
testcase_05 | WA | - |
testcase_06 | WA | - |
testcase_07 | AC | 131 ms
41,316 KB |
testcase_08 | AC | 131 ms
41,176 KB |
testcase_09 | WA | - |
testcase_10 | WA | - |
testcase_11 | AC | 121 ms
40,012 KB |
testcase_12 | AC | 133 ms
40,944 KB |
testcase_13 | WA | - |
testcase_14 | AC | 141 ms
41,392 KB |
testcase_15 | WA | - |
testcase_16 | AC | 197 ms
42,996 KB |
testcase_17 | AC | 139 ms
41,244 KB |
testcase_18 | WA | - |
testcase_19 | AC | 141 ms
41,120 KB |
testcase_20 | WA | - |
testcase_21 | AC | 207 ms
42,536 KB |
testcase_22 | AC | 207 ms
42,896 KB |
ソースコード
import java.util.Scanner; public class Main { public static void main(String[] args) { Main main = new Main(); main.solveA(); } private void solveA() { Scanner sc = new Scanner(System.in); int N = sc.nextInt(); int[] B = new int[N]; int[] C = new int[N]; for (int i = 0; i < N; i++) { B[i] = sc.nextInt(); C[i] = sc.nextInt(); } int M = sc.nextInt(); int[] D = new int[M]; int[] E = new int[M]; for (int i = 0; i < M; i++) { D[i] = sc.nextInt(); E[i] = sc.nextInt(); } int ans = 0; // 0=s 2*N+1=t Integer[][] costGraph = new Integer[2*N+2][]; for (int i = 0; i < 2*N+2; i++) { costGraph[i] = new Integer[2*N+2]; } for (int i = 0; i < N; i++) { int small = B[i] < C[i] ? B[i] : C[i]; costGraph[0][i+1] = B[i] - small; costGraph[i+1][N+i+1] = B[i] + C[i] - small; costGraph[N+i+1][2*N+1] = C[i] - small; ans += B[i] + C[i] - small; } for (int i = 0; i < M; i++) { costGraph[N+1+D[i]][1+E[i]] = Integer.MAX_VALUE / 3; } int current; int limitDepth = 0; boolean changed = false; boolean prevChanged = false; do { current = flow(costGraph, 0, Integer.MAX_VALUE / 3, 2 * N + 2, 0, limitDepth, 0); ans -= current; if (current == 0) { if (changed && !prevChanged) { break; } limitDepth++; prevChanged = false; } else { prevChanged = true; changed = true; } } while (limitDepth <= 12); // 12 > log(1^10) / log(N * 2) System.out.println(ans); } private int flow(Integer[][] graph, int current_id, int current_flow, int max_id, int depth, int limitDepth, int prev) { if (current_id == max_id - 1) { return current_flow; } if (depth >= limitDepth) { return 0; } int sum_flow = 0; for (int id = max_id - 1; id >= 0; id--) { if (graph[current_id][id] != null && graph[current_id][id] > 0 && prev != id) { int nextFlow = current_flow < graph[current_id][id] ? current_flow : graph[current_id][id]; int tmpFlow = flow(graph, id, nextFlow, max_id, depth+1, limitDepth, current_id); if (tmpFlow > 0) { graph[current_id][id] -= tmpFlow; if (graph[id][current_id] == null) { graph[id][current_id] = 0; } graph[id][current_id] += tmpFlow; sum_flow += tmpFlow; current_flow -= tmpFlow; } } } return sum_flow; } }