結果
問題 | No.1207 グラフX |
ユーザー | tenten |
提出日時 | 2022-04-08 13:47:30 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 1,907 ms / 2,000 ms |
コード長 | 3,119 bytes |
コンパイル時間 | 2,373 ms |
コンパイル使用メモリ | 78,220 KB |
実行使用メモリ | 122,908 KB |
最終ジャッジ日時 | 2024-11-28 04:33:52 |
合計ジャッジ時間 | 47,101 ms |
ジャッジサーバーID (参考情報) |
judge3 / 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 | 767 ms
85,472 KB |
testcase_01 | AC | 862 ms
85,656 KB |
testcase_02 | AC | 901 ms
86,356 KB |
testcase_03 | AC | 779 ms
87,172 KB |
testcase_04 | AC | 883 ms
87,300 KB |
testcase_05 | AC | 1,907 ms
121,816 KB |
testcase_06 | AC | 1,757 ms
95,420 KB |
testcase_07 | AC | 1,828 ms
122,908 KB |
testcase_08 | AC | 813 ms
69,200 KB |
testcase_09 | AC | 882 ms
75,932 KB |
testcase_10 | AC | 1,074 ms
121,824 KB |
testcase_11 | AC | 1,431 ms
107,524 KB |
testcase_12 | AC | 695 ms
74,412 KB |
testcase_13 | AC | 446 ms
52,720 KB |
testcase_14 | AC | 1,120 ms
97,344 KB |
testcase_15 | AC | 851 ms
77,956 KB |
testcase_16 | AC | 477 ms
55,544 KB |
testcase_17 | AC | 816 ms
67,372 KB |
testcase_18 | AC | 580 ms
68,164 KB |
testcase_19 | AC | 626 ms
62,900 KB |
testcase_20 | AC | 904 ms
85,072 KB |
testcase_21 | AC | 184 ms
43,848 KB |
testcase_22 | AC | 709 ms
69,844 KB |
testcase_23 | AC | 772 ms
74,112 KB |
testcase_24 | AC | 584 ms
65,144 KB |
testcase_25 | AC | 1,103 ms
100,520 KB |
testcase_26 | AC | 907 ms
75,452 KB |
testcase_27 | AC | 1,183 ms
95,708 KB |
testcase_28 | AC | 772 ms
76,308 KB |
testcase_29 | AC | 816 ms
77,856 KB |
testcase_30 | AC | 534 ms
59,216 KB |
testcase_31 | AC | 420 ms
51,448 KB |
testcase_32 | AC | 496 ms
55,684 KB |
testcase_33 | AC | 461 ms
59,656 KB |
testcase_34 | AC | 947 ms
74,112 KB |
testcase_35 | AC | 193 ms
44,336 KB |
testcase_36 | AC | 774 ms
76,244 KB |
testcase_37 | AC | 864 ms
67,936 KB |
testcase_38 | AC | 341 ms
52,232 KB |
testcase_39 | AC | 568 ms
60,560 KB |
testcase_40 | AC | 305 ms
46,536 KB |
testcase_41 | AC | 638 ms
63,736 KB |
testcase_42 | AC | 46 ms
36,680 KB |
testcase_43 | AC | 46 ms
37,092 KB |
testcase_44 | AC | 47 ms
36,964 KB |
testcase_45 | AC | 874 ms
84,232 KB |
testcase_46 | AC | 1,159 ms
97,320 KB |
testcase_47 | AC | 1,173 ms
97,508 KB |
testcase_48 | AC | 1,131 ms
97,536 KB |
ソースコード
import java.io.*; import java.util.*; public class Main { static ArrayList<ArrayList<Path>> graph = new ArrayList<>(); static final int MOD = 1000000007; static int n; static int base; static long ans = 0; public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); n = sc.nextInt(); int m = sc.nextInt(); base = sc.nextInt(); for (int i = 0; i < n; i++) { graph.add(new ArrayList<>()); } UnionFindTree uft = new UnionFindTree(n); for (int i = 0; i < m; i++) { int a = sc.nextInt() - 1; int b = sc.nextInt() - 1; int c = sc.nextInt(); if (!uft.same(a, b)) { uft.unite(a, b); graph.get(a).add(new Path(b, c)); graph.get(b).add(new Path(a, c)); } } getCount(0, 0); System.out.println(ans); } static int getCount(int idx, int p) { int count = 1; for (Path x : graph.get(idx)) { if (x.idx == p) { continue; } int tmp = getCount(x.idx, idx); ans += (long)tmp * (n - tmp) % MOD * pow(base, x.value) % MOD; ans %= MOD; count += tmp; } return count; } static long pow(long x, int p) { if (p == 0) { return 1; } else if (p % 2 == 0) { return pow(x * x % MOD, p / 2); } else { return pow(x, p - 1) * x % MOD; } } static class UnionFindTree { int[] parents; public UnionFindTree(int size) { parents = new int[size]; for (int i = 0; i < size; i++) { parents[i] = i; } } public int find(int x) { if (x == parents[x]) { return x; } else { return parents[x] = find(parents[x]); } } public boolean same(int x, int y) { return find(x) == find(y); } public void unite(int x, int y) { parents[find(x)] = find(y); } } static class Path { int idx; int value; public Path(int idx, int value) { this.idx = idx; this.value = value; } } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public String next() throws Exception { if (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }