結果
問題 | No.1813 Magical Stones |
ユーザー | 👑 hos.lyric |
提出日時 | 2022-01-14 21:26:52 |
言語 | D (dmd 2.106.1) |
結果 |
AC
|
実行時間 | 225 ms / 2,000 ms |
コード長 | 2,768 bytes |
コンパイル時間 | 711 ms |
コンパイル使用メモリ | 124,416 KB |
実行使用メモリ | 21,772 KB |
最終ジャッジ日時 | 2024-06-22 14:02:34 |
合計ジャッジ時間 | 5,466 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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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 | 1 ms
6,812 KB |
testcase_01 | AC | 1 ms
6,940 KB |
testcase_02 | AC | 1 ms
6,940 KB |
testcase_03 | AC | 9 ms
7,176 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 1 ms
6,944 KB |
testcase_06 | AC | 3 ms
6,944 KB |
testcase_07 | AC | 1 ms
6,940 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 1 ms
6,940 KB |
testcase_10 | AC | 1 ms
6,944 KB |
testcase_11 | AC | 30 ms
6,940 KB |
testcase_12 | AC | 1 ms
6,944 KB |
testcase_13 | AC | 1 ms
6,940 KB |
testcase_14 | AC | 9 ms
7,144 KB |
testcase_15 | AC | 202 ms
18,432 KB |
testcase_16 | AC | 216 ms
19,212 KB |
testcase_17 | AC | 218 ms
21,772 KB |
testcase_18 | AC | 217 ms
18,484 KB |
testcase_19 | AC | 223 ms
17,336 KB |
testcase_20 | AC | 225 ms
17,164 KB |
testcase_21 | AC | 219 ms
17,108 KB |
testcase_22 | AC | 218 ms
19,288 KB |
testcase_23 | AC | 223 ms
17,776 KB |
testcase_24 | AC | 3 ms
6,940 KB |
testcase_25 | AC | 21 ms
6,940 KB |
testcase_26 | AC | 8 ms
6,944 KB |
testcase_27 | AC | 135 ms
12,796 KB |
testcase_28 | AC | 201 ms
15,060 KB |
testcase_29 | AC | 162 ms
15,008 KB |
testcase_30 | AC | 151 ms
13,664 KB |
testcase_31 | AC | 178 ms
16,620 KB |
testcase_32 | AC | 1 ms
6,944 KB |
testcase_33 | AC | 1 ms
6,944 KB |
testcase_34 | AC | 9 ms
6,940 KB |
testcase_35 | AC | 34 ms
6,944 KB |
testcase_36 | AC | 3 ms
6,948 KB |
testcase_37 | AC | 67 ms
8,048 KB |
testcase_38 | AC | 13 ms
7,168 KB |
testcase_39 | AC | 115 ms
11,560 KB |
testcase_40 | AC | 5 ms
6,948 KB |
testcase_41 | AC | 9 ms
6,940 KB |
testcase_42 | AC | 34 ms
6,944 KB |
testcase_43 | AC | 16 ms
6,944 KB |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string; import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, std.regex, std.typecons; import core.bitop; class EOFException : Throwable { this() { super("EOF"); } } string[] tokens; string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; } int readInt() { return readToken.to!int; } long readLong() { return readToken.to!long; } real readReal() { return readToken.to!real; } bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } } bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } } int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; } int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); } int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); } Tuple!(int, int[]) scc(in int[][][] graph) { const n = cast(int)(graph[0].length); int compN; auto compIds = new int[n]; int[] us; void dfs(int s, int u, int a, int b) { if (compIds[u] == a) { compIds[u] = b; foreach (v; graph[s][u]) { dfs(s, v, a, b); } if (s == 0) { us ~= u; } } } foreach (u; 0 .. n) { dfs(0, u, 0, -1); } foreach_reverse (u; us) { if (compIds[u] == -1) { dfs(1, u, -1, compN); ++compN; } } return tuple(compN, compIds); } void main() { try { for (; ; ) { const N = readInt(); const M = readInt(); auto A = new int[M]; auto B = new int[M]; foreach (i; 0 .. M) { A[i] = readInt() - 1; B[i] = readInt() - 1; } auto graph = new int[][][](2, N); foreach (i; 0 .. M) { graph[0][A[i]] ~= B[i]; graph[1][B[i]] ~= A[i]; } const res = scc(graph); auto outdeg = new int[res[0]]; auto indeg = new int[res[0]]; foreach (i; 0 .. M) { const x = res[1][A[i]]; const y = res[1][B[i]]; if (x != y) { ++outdeg[x]; ++indeg[y]; } } debug { if (N <= 10) { writeln("res = ", res); writeln("outdeg = ", outdeg); writeln("indeg = ", indeg); } } int ans = 0; if (res[0] > 1) { chmax(ans, cast(int)(indeg.count(0))); chmax(ans, cast(int)(outdeg.count(0))); } writeln(ans); } } catch (EOFException e) { } }